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llvm-project/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
Sergio Afonso bdd6b36a93 [OMPIRBuilder] Add support for explicit deallocation points 
In this patch, some OMPIRBuilder codegen functions and callbacks are updated to
work with arrays of deallocation insertion points. The purpose of this is to
enable the replacement of `alloca`s with other types of allocations that
require explicit deallocations in a way that makes it possible for
`CodeExtractor` instances created during OMPIRBuilder finalization to also use
them.

The OpenMP to LLVM IR MLIR translation pass is updated to properly store and
forward deallocation points together with their matching allocation point to
the OMPIRBuilder.

Currently, only the `DeviceSharedMemCodeExtractor` uses this feature to get the
`CodeExtractor` to use device shared memory for intermediate allocations when
outlining a parallel region inside of a Generic kernel (code path that is only
used by Flang via MLIR, currently). However, long term this might also be
useful to refactor finalization of variables with destructors, potentially
reducing the use of callbacks and simplifying privatization and reductions.

Instead of a single deallocation point, lists of those are used. This is to
cover cases where there are multiple exit blocks originating from a single
entry. If an allocation needing explicit deallocation is placed in the entry
block of such cases, it would need to be deallocated before each of the exits.
2025-08-21 14:06:32 +01:00

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//===- llvm/unittest/IR/OpenMPIRBuilderTest.cpp - OpenMPIRBuilder tests ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Frontend/OpenMP/OMPConstants.h"
#include "llvm/Frontend/OpenMP/OMPDeviceConstants.h"
#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Support/Casting.h"
#include "llvm/Testing/Support/Error.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <cstdlib>
#include <optional>
using namespace llvm;
using namespace omp;
// Helper that intends to be functionally equivalent to `VarType VarName = Init`
// for an `Init` that returns an `Expected<VarType>` value. It produces an error
// message and returns if `Init` didn't produce a valid result.
#define ASSERT_EXPECTED_INIT(VarType, VarName, Init) \
auto __Expected##VarName = Init; \
ASSERT_THAT_EXPECTED(__Expected##VarName, Succeeded()); \
VarType VarName = *__Expected##VarName
// Similar to ASSERT_EXPECTED_INIT, but returns a given expression in case of
// error after printing the error message.
#define ASSERT_EXPECTED_INIT_RETURN(VarType, VarName, Init, Return) \
auto __Expected##VarName = Init; \
EXPECT_THAT_EXPECTED(__Expected##VarName, Succeeded()); \
if (!__Expected##VarName) \
return Return; \
VarType VarName = *__Expected##VarName
// Wrapper lambdas to allow using EXPECT*() macros inside of error-returning
// callbacks.
#define FINICB_WRAPPER(cb) \
[&cb](InsertPointTy IP) -> Error { \
cb(IP); \
return Error::success(); \
}
#define BODYGENCB_WRAPPER(cb) \
[&cb](InsertPointTy AllocIP, InsertPointTy CodeGenIP, \
ArrayRef<InsertPointTy> DeallocIPs) -> Error { \
cb(AllocIP, CodeGenIP, DeallocIPs); \
return Error::success(); \
}
#define LOOP_BODYGENCB_WRAPPER(cb) \
[&cb](InsertPointTy CodeGenIP, Value *LC) -> Error { \
cb(CodeGenIP, LC); \
return Error::success(); \
}
namespace {
/// Create an instruction that uses the values in \p Values. We use "printf"
/// just because it is often used for this purpose in test code, but it is never
/// executed here.
static CallInst *createPrintfCall(IRBuilder<> &Builder, StringRef FormatStr,
ArrayRef<Value *> Values) {
Module *M = Builder.GetInsertBlock()->getParent()->getParent();
GlobalVariable *GV = Builder.CreateGlobalString(FormatStr, "", 0, M);
Constant *Zero = ConstantInt::get(Type::getInt32Ty(M->getContext()), 0);
Constant *Indices[] = {Zero, Zero};
Constant *FormatStrConst =
ConstantExpr::getInBoundsGetElementPtr(GV->getValueType(), GV, Indices);
Function *PrintfDecl = M->getFunction("printf");
if (!PrintfDecl) {
GlobalValue::LinkageTypes Linkage = Function::ExternalLinkage;
FunctionType *Ty = FunctionType::get(Builder.getInt32Ty(), true);
PrintfDecl = Function::Create(Ty, Linkage, "printf", M);
}
SmallVector<Value *, 4> Args;
Args.push_back(FormatStrConst);
Args.append(Values.begin(), Values.end());
return Builder.CreateCall(PrintfDecl, Args);
}
/// Verify that blocks in \p RefOrder are corresponds to the depth-first visit
/// order the control flow of \p F.
///
/// This is an easy way to verify the branching structure of the CFG without
/// checking every branch instruction individually. For the CFG of a
/// CanonicalLoopInfo, the Cond BB's terminating branch's first edge is entering
/// the body, i.e. the DFS order corresponds to the execution order with one
/// loop iteration.
static testing::AssertionResult
verifyDFSOrder(Function *F, ArrayRef<BasicBlock *> RefOrder) {
ArrayRef<BasicBlock *>::iterator It = RefOrder.begin();
ArrayRef<BasicBlock *>::iterator E = RefOrder.end();
df_iterator_default_set<BasicBlock *, 16> Visited;
auto DFS = llvm::depth_first_ext(&F->getEntryBlock(), Visited);
BasicBlock *Prev = nullptr;
for (BasicBlock *BB : DFS) {
if (It != E && BB == *It) {
Prev = *It;
++It;
}
}
if (It == E)
return testing::AssertionSuccess();
if (!Prev)
return testing::AssertionFailure()
<< "Did not find " << (*It)->getName() << " in control flow";
return testing::AssertionFailure()
<< "Expected " << Prev->getName() << " before " << (*It)->getName()
<< " in control flow";
}
/// Verify that blocks in \p RefOrder are in the same relative order in the
/// linked lists of blocks in \p F. The linked list may contain additional
/// blocks in-between.
///
/// While the order in the linked list is not relevant for semantics, keeping
/// the order roughly in execution order makes its printout easier to read.
static testing::AssertionResult
verifyListOrder(Function *F, ArrayRef<BasicBlock *> RefOrder) {
ArrayRef<BasicBlock *>::iterator It = RefOrder.begin();
ArrayRef<BasicBlock *>::iterator E = RefOrder.end();
BasicBlock *Prev = nullptr;
for (BasicBlock &BB : *F) {
if (It != E && &BB == *It) {
Prev = *It;
++It;
}
}
if (It == E)
return testing::AssertionSuccess();
if (!Prev)
return testing::AssertionFailure() << "Did not find " << (*It)->getName()
<< " in function " << F->getName();
return testing::AssertionFailure()
<< "Expected " << Prev->getName() << " before " << (*It)->getName()
<< " in function " << F->getName();
}
/// Populate Calls with call instructions calling the function with the given
/// FnID from the given function F.
static void findCalls(Function *F, omp::RuntimeFunction FnID,
OpenMPIRBuilder &OMPBuilder,
SmallVectorImpl<CallInst *> &Calls) {
Function *Fn = OMPBuilder.getOrCreateRuntimeFunctionPtr(FnID);
for (BasicBlock &BB : *F) {
for (Instruction &I : BB) {
auto *Call = dyn_cast<CallInst>(&I);
if (Call && Call->getCalledFunction() == Fn)
Calls.push_back(Call);
}
}
}
/// Assuming \p F contains only one call to the function with the given \p FnID,
/// return that call.
static CallInst *findSingleCall(Function *F, omp::RuntimeFunction FnID,
OpenMPIRBuilder &OMPBuilder) {
SmallVector<CallInst *, 1> Calls;
findCalls(F, FnID, OMPBuilder, Calls);
EXPECT_EQ(1u, Calls.size());
if (Calls.size() != 1)
return nullptr;
return Calls.front();
}
static omp::ScheduleKind getSchedKind(omp::OMPScheduleType SchedType) {
switch (SchedType & ~omp::OMPScheduleType::ModifierMask) {
case omp::OMPScheduleType::BaseDynamicChunked:
return omp::OMP_SCHEDULE_Dynamic;
case omp::OMPScheduleType::BaseGuidedChunked:
return omp::OMP_SCHEDULE_Guided;
case omp::OMPScheduleType::BaseAuto:
return omp::OMP_SCHEDULE_Auto;
case omp::OMPScheduleType::BaseRuntime:
return omp::OMP_SCHEDULE_Runtime;
default:
llvm_unreachable("unknown type for this test");
}
}
class OpenMPIRBuilderTest : public testing::Test {
protected:
void SetUp() override {
M.reset(new Module("MyModule", Ctx));
FunctionType *FTy =
FunctionType::get(Type::getVoidTy(Ctx), {Type::getInt32Ty(Ctx)},
/*isVarArg=*/false);
F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
BB = BasicBlock::Create(Ctx, "", F);
DIBuilder DIB(*M);
auto File = DIB.createFile("test.dbg", "/src", std::nullopt,
std::optional<StringRef>("/src/test.dbg"));
auto CU =
DIB.createCompileUnit(dwarf::DW_LANG_C, File, "llvm-C", true, "", 0);
auto Type = DIB.createSubroutineType(DIB.getOrCreateTypeArray({}));
auto SP = DIB.createFunction(
CU, "foo", "", File, 1, Type, 1, DINode::FlagZero,
DISubprogram::SPFlagDefinition | DISubprogram::SPFlagOptimized);
F->setSubprogram(SP);
auto Scope = DIB.createLexicalBlockFile(SP, File, 0);
DIB.finalize();
DL = DILocation::get(Ctx, 3, 7, Scope);
}
void TearDown() override {
BB = nullptr;
M.reset();
}
/// Create a function with a simple loop that calls printf using the logical
/// loop counter for use with tests that need a CanonicalLoopInfo object.
CanonicalLoopInfo *buildSingleLoopFunction(DebugLoc DL,
OpenMPIRBuilder &OMPBuilder,
int UseIVBits,
CallInst **Call = nullptr,
BasicBlock **BodyCode = nullptr) {
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
Type *IVType = Type::getIntNTy(Builder.getContext(), UseIVBits);
Value *CastedTripCount =
Builder.CreateZExtOrTrunc(TripCount, IVType, "tripcount");
auto LoopBodyGenCB = [&](OpenMPIRBuilder::InsertPointTy CodeGenIP,
llvm::Value *LC) {
Builder.restoreIP(CodeGenIP);
if (BodyCode)
*BodyCode = Builder.GetInsertBlock();
// Add something that consumes the induction variable to the body.
CallInst *CallInst = createPrintfCall(Builder, "%d\\n", {LC});
if (Call)
*Call = CallInst;
return Error::success();
};
ASSERT_EXPECTED_INIT_RETURN(
CanonicalLoopInfo *, Loop,
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, CastedTripCount),
nullptr);
// Finalize the function.
Builder.restoreIP(Loop->getAfterIP());
Builder.CreateRetVoid();
return Loop;
}
LLVMContext Ctx;
std::unique_ptr<Module> M;
Function *F;
BasicBlock *BB;
DebugLoc DL;
};
class OpenMPIRBuilderTestWithParams
: public OpenMPIRBuilderTest,
public ::testing::WithParamInterface<omp::OMPScheduleType> {};
class OpenMPIRBuilderTestWithIVBits
: public OpenMPIRBuilderTest,
public ::testing::WithParamInterface<int> {};
// Returns the value stored in the given allocation. Returns null if the given
// value is not a result of an InstTy instruction, if no value is stored or if
// there is more than one store.
template <typename InstTy> static Value *findStoredValue(Value *AllocaValue) {
Instruction *Inst = dyn_cast<InstTy>(AllocaValue);
if (!Inst)
return nullptr;
StoreInst *Store = nullptr;
for (Use &U : Inst->uses()) {
if (auto *CandidateStore = dyn_cast<StoreInst>(U.getUser())) {
EXPECT_EQ(Store, nullptr);
Store = CandidateStore;
}
}
if (!Store)
return nullptr;
return Store->getValueOperand();
}
// Returns the value stored in the aggregate argument of an outlined function,
// or nullptr if it is not found.
static Value *findStoredValueInAggregateAt(LLVMContext &Ctx, Value *Aggregate,
unsigned Idx) {
GetElementPtrInst *GEPAtIdx = nullptr;
// Find GEP instruction at that index.
for (User *Usr : Aggregate->users()) {
GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Usr);
if (!GEP)
continue;
if (GEP->getOperand(2) != ConstantInt::get(Type::getInt32Ty(Ctx), Idx))
continue;
EXPECT_EQ(GEPAtIdx, nullptr);
GEPAtIdx = GEP;
}
EXPECT_NE(GEPAtIdx, nullptr);
EXPECT_TRUE(GEPAtIdx->hasOneUse());
// Find the value stored to the aggregate.
StoreInst *StoreToAgg = dyn_cast<StoreInst>(*GEPAtIdx->user_begin());
Value *StoredAggValue = StoreToAgg->getValueOperand();
Value *StoredValue = nullptr;
// Find the value stored to the value stored in the aggregate.
for (User *Usr : StoredAggValue->users()) {
StoreInst *Store = dyn_cast<StoreInst>(Usr);
if (!Store)
continue;
if (Store->getPointerOperand() != StoredAggValue)
continue;
EXPECT_EQ(StoredValue, nullptr);
StoredValue = Store->getValueOperand();
}
return StoredValue;
}
// Returns the aggregate that the value is originating from.
static Value *findAggregateFromValue(Value *V) {
// Expects a load instruction that loads from the aggregate.
LoadInst *Load = dyn_cast<LoadInst>(V);
EXPECT_NE(Load, nullptr);
// Find the GEP instruction used in the load instruction.
GetElementPtrInst *GEP =
dyn_cast<GetElementPtrInst>(Load->getPointerOperand());
EXPECT_NE(GEP, nullptr);
// Find the aggregate used in the GEP instruction.
Value *Aggregate = GEP->getPointerOperand();
return Aggregate;
}
TEST_F(OpenMPIRBuilderTest, CreateBarrier) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
ASSERT_THAT_EXPECTED(
OMPBuilder.createBarrier({IRBuilder<>::InsertPoint()}, OMPD_for),
Succeeded());
EXPECT_TRUE(M->global_empty());
EXPECT_EQ(M->size(), 1U);
EXPECT_EQ(F->size(), 1U);
EXPECT_EQ(BB->size(), 0U);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
ASSERT_THAT_EXPECTED(OMPBuilder.createBarrier(Loc, OMPD_for), Succeeded());
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 3U);
EXPECT_EQ(F->size(), 1U);
EXPECT_EQ(BB->size(), 2U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(cast<CallInst>(Barrier)->getArgOperand(1), GTID);
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateCancel) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
BasicBlock *CBB = BasicBlock::Create(Ctx, "", F);
new UnreachableInst(Ctx, CBB);
auto FiniCB = [&](InsertPointTy IP) {
ASSERT_NE(IP.getBlock(), nullptr);
ASSERT_EQ(IP.getBlock()->end(), IP.getPoint());
BranchInst::Create(CBB, IP.getBlock());
};
OMPBuilder.pushFinalizationCB({FINICB_WRAPPER(FiniCB), OMPD_parallel, true});
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, NewIP,
OMPBuilder.createCancel(Loc, nullptr, OMPD_parallel));
Builder.restoreIP(NewIP);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 4U);
EXPECT_EQ(F->size(), 4U);
EXPECT_EQ(BB->size(), 4U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Cancel = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Cancel, nullptr);
EXPECT_EQ(Cancel->arg_size(), 3U);
EXPECT_EQ(Cancel->getCalledFunction()->getName(), "__kmpc_cancel");
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotFreeMemory());
EXPECT_TRUE(Cancel->hasOneUse());
Instruction *CancelBBTI = Cancel->getParent()->getTerminator();
EXPECT_EQ(CancelBBTI->getNumSuccessors(), 2U);
EXPECT_EQ(CancelBBTI->getSuccessor(0), NewIP.getBlock());
EXPECT_EQ(CancelBBTI->getSuccessor(1)->size(), 3U);
CallInst *GTID1 = dyn_cast<CallInst>(&CancelBBTI->getSuccessor(1)->front());
EXPECT_NE(GTID1, nullptr);
EXPECT_EQ(GTID1->arg_size(), 1U);
EXPECT_EQ(GTID1->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID1->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_cancel_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_TRUE(Barrier->use_empty());
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getNumSuccessors(),
1U);
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getSuccessor(0), CBB);
EXPECT_EQ(cast<CallInst>(Cancel)->getArgOperand(1), GTID);
OMPBuilder.popFinalizationCB();
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateCancelIfCond) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
BasicBlock *CBB = BasicBlock::Create(Ctx, "", F);
new UnreachableInst(Ctx, CBB);
auto FiniCB = [&](InsertPointTy IP) {
ASSERT_NE(IP.getBlock(), nullptr);
ASSERT_EQ(IP.getBlock()->end(), IP.getPoint());
BranchInst::Create(CBB, IP.getBlock());
};
OMPBuilder.pushFinalizationCB({FINICB_WRAPPER(FiniCB), OMPD_parallel, true});
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, NewIP,
OMPBuilder.createCancel(Loc, Builder.getTrue(), OMPD_parallel));
Builder.restoreIP(NewIP);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 4U);
EXPECT_EQ(F->size(), 7U);
EXPECT_EQ(BB->size(), 1U);
ASSERT_TRUE(isa<BranchInst>(BB->getTerminator()));
ASSERT_EQ(BB->getTerminator()->getNumSuccessors(), 2U);
BB = BB->getTerminator()->getSuccessor(0);
EXPECT_EQ(BB->size(), 4U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Cancel = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Cancel, nullptr);
EXPECT_EQ(Cancel->arg_size(), 3U);
EXPECT_EQ(Cancel->getCalledFunction()->getName(), "__kmpc_cancel");
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotFreeMemory());
EXPECT_TRUE(Cancel->hasOneUse());
Instruction *CancelBBTI = Cancel->getParent()->getTerminator();
EXPECT_EQ(CancelBBTI->getNumSuccessors(), 2U);
EXPECT_EQ(CancelBBTI->getSuccessor(0)->size(), 1U);
EXPECT_EQ(CancelBBTI->getSuccessor(0)->getUniqueSuccessor(),
NewIP.getBlock());
EXPECT_EQ(CancelBBTI->getSuccessor(1)->size(), 3U);
CallInst *GTID1 = dyn_cast<CallInst>(&CancelBBTI->getSuccessor(1)->front());
EXPECT_NE(GTID1, nullptr);
EXPECT_EQ(GTID1->arg_size(), 1U);
EXPECT_EQ(GTID1->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID1->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_cancel_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_TRUE(Barrier->use_empty());
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getNumSuccessors(),
1U);
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getSuccessor(0), CBB);
EXPECT_EQ(cast<CallInst>(Cancel)->getArgOperand(1), GTID);
OMPBuilder.popFinalizationCB();
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateCancelBarrier) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
BasicBlock *CBB = BasicBlock::Create(Ctx, "", F);
new UnreachableInst(Ctx, CBB);
auto FiniCB = [&](InsertPointTy IP) {
ASSERT_NE(IP.getBlock(), nullptr);
ASSERT_EQ(IP.getBlock()->end(), IP.getPoint());
BranchInst::Create(CBB, IP.getBlock());
};
OMPBuilder.pushFinalizationCB({FINICB_WRAPPER(FiniCB), OMPD_parallel, true});
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, NewIP,
OMPBuilder.createBarrier(Loc, OMPD_for));
Builder.restoreIP(NewIP);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 3U);
EXPECT_EQ(F->size(), 4U);
EXPECT_EQ(BB->size(), 4U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_cancel_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_TRUE(Barrier->hasOneUse());
Instruction *BarrierBBTI = Barrier->getParent()->getTerminator();
EXPECT_EQ(BarrierBBTI->getNumSuccessors(), 2U);
EXPECT_EQ(BarrierBBTI->getSuccessor(0), NewIP.getBlock());
EXPECT_EQ(BarrierBBTI->getSuccessor(1)->size(), 1U);
EXPECT_EQ(BarrierBBTI->getSuccessor(1)->getTerminator()->getNumSuccessors(),
1U);
EXPECT_EQ(BarrierBBTI->getSuccessor(1)->getTerminator()->getSuccessor(0),
CBB);
EXPECT_EQ(cast<CallInst>(Barrier)->getArgOperand(1), GTID);
OMPBuilder.popFinalizationCB();
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, DbgLoc) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
ASSERT_THAT_EXPECTED(OMPBuilder.createBarrier(Loc, OMPD_for), Succeeded());
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
CallInst *Barrier = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_EQ(GTID->getDebugLoc(), DL);
EXPECT_EQ(Barrier->getDebugLoc(), DL);
EXPECT_TRUE(isa<GlobalVariable>(Barrier->getOperand(0)));
if (!isa<GlobalVariable>(Barrier->getOperand(0)))
return;
GlobalVariable *Ident = cast<GlobalVariable>(Barrier->getOperand(0));
EXPECT_TRUE(Ident->hasInitializer());
if (!Ident->hasInitializer())
return;
Constant *Initializer = Ident->getInitializer();
EXPECT_TRUE(
isa<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts()));
GlobalVariable *SrcStrGlob =
cast<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts());
if (!SrcStrGlob)
return;
EXPECT_TRUE(isa<ConstantDataArray>(SrcStrGlob->getInitializer()));
ConstantDataArray *SrcSrc =
dyn_cast<ConstantDataArray>(SrcStrGlob->getInitializer());
if (!SrcSrc)
return;
EXPECT_EQ(SrcSrc->getAsCString(), ";/src/test.dbg;foo;3;7;;");
}
TEST_F(OpenMPIRBuilderTest, ParallelSimpleGPU) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
std::string oldDLStr = M->getDataLayoutStr();
M->setDataLayout(
"e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:"
"256:256:32-p8:128:128:128:48-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-"
"v192:"
"256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8");
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = true;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumBodiesGenerated;
Builder.restoreIP(AllocIP);
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
Builder.restoreIP(CodeGenIP);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Value *Cmp = Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
return Error::success();
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
++NumPrivatizedVars;
if (!isa<AllocaInst>(Orig)) {
EXPECT_EQ(&Orig, F->arg_begin());
ReplacementValue = &Inner;
return CodeGenIP;
}
// Since the original value is an allocation, it has a pointer type and
// therefore no additional wrapping should happen.
EXPECT_EQ(&Orig, &Inner);
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) {
++NumFinalizationPoints;
return Error::success();
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(
Loc, AllocaIP, {}, BodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false));
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 1U);
EXPECT_EQ(NumFinalizationPoints, 1U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(OutlinedFn, F);
EXPECT_TRUE(OutlinedFn->hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn->hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn->hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn->hasInternalLinkage());
EXPECT_EQ(OutlinedFn->arg_size(), 3U);
// Make sure that arguments are pointers in 0 address address space
EXPECT_EQ(OutlinedFn->getArg(0)->getType(),
PointerType::get(M->getContext(), 0));
EXPECT_EQ(OutlinedFn->getArg(1)->getType(),
PointerType::get(M->getContext(), 0));
EXPECT_EQ(OutlinedFn->getArg(2)->getType(),
PointerType::get(M->getContext(), 0));
EXPECT_EQ(&OutlinedFn->getEntryBlock(), PrivAI->getParent());
EXPECT_TRUE(OutlinedFn->hasOneUse());
User *Usr = OutlinedFn->user_back();
ASSERT_TRUE(isa<CallInst>(Usr));
CallInst *Parallel51CI = dyn_cast<CallInst>(Usr);
ASSERT_NE(Parallel51CI, nullptr);
EXPECT_EQ(Parallel51CI->getCalledFunction()->getName(), "__kmpc_parallel_51");
EXPECT_EQ(Parallel51CI->arg_size(), 9U);
EXPECT_EQ(Parallel51CI->getArgOperand(5), OutlinedFn);
EXPECT_TRUE(
isa<GlobalVariable>(Parallel51CI->getArgOperand(0)->stripPointerCasts()));
EXPECT_EQ(Parallel51CI, Usr);
M->setDataLayout(oldDLStr);
}
TEST_F(OpenMPIRBuilderTest, ParallelSimple) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumBodiesGenerated;
Builder.restoreIP(AllocIP);
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
Builder.restoreIP(CodeGenIP);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Value *Cmp = Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
return Error::success();
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
++NumPrivatizedVars;
if (!isa<AllocaInst>(Orig)) {
EXPECT_EQ(&Orig, F->arg_begin());
ReplacementValue = &Inner;
return CodeGenIP;
}
// Since the original value is an allocation, it has a pointer type and
// therefore no additional wrapping should happen.
EXPECT_EQ(&Orig, &Inner);
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) {
++NumFinalizationPoints;
return Error::success();
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(
Loc, AllocaIP, {}, BodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false));
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 1U);
EXPECT_EQ(NumFinalizationPoints, 1U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_NE(PrivAI, nullptr);
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_NE(F, OutlinedFn);
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn->hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn->hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn->hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn->hasInternalLinkage());
EXPECT_EQ(OutlinedFn->arg_size(), 3U);
EXPECT_EQ(&OutlinedFn->getEntryBlock(), PrivAI->getParent());
EXPECT_TRUE(OutlinedFn->hasOneUse());
User *Usr = OutlinedFn->user_back();
ASSERT_TRUE(isa<CallInst>(Usr));
CallInst *ForkCI = dyn_cast<CallInst>(Usr);
ASSERT_NE(ForkCI, nullptr);
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 4U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 1U));
EXPECT_EQ(ForkCI, Usr);
Value *StoredValue =
findStoredValueInAggregateAt(Ctx, ForkCI->getArgOperand(3), 0);
EXPECT_EQ(StoredValue, F->arg_begin());
}
TEST_F(OpenMPIRBuilderTest, ParallelNested) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned NumInnerBodiesGenerated = 0;
unsigned NumOuterBodiesGenerated = 0;
unsigned NumFinalizationPoints = 0;
auto InnerBodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumInnerBodiesGenerated;
return Error::success();
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) {
++NumFinalizationPoints;
return Error::success();
};
auto OuterBodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumOuterBodiesGenerated;
Builder.restoreIP(CodeGenIP);
BasicBlock *CGBB = CodeGenIP.getBlock();
BasicBlock *NewBB = SplitBlock(CGBB, &*CodeGenIP.getPoint());
CGBB->getTerminator()->eraseFromParent();
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(InsertPointTy(CGBB, CGBB->end()), AllocIP, {},
InnerBodyGenCB, PrivCB, FiniCB, nullptr,
nullptr, OMP_PROC_BIND_default, false));
Builder.restoreIP(AfterIP);
Builder.CreateBr(NewBB);
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(
Loc, AllocaIP, {}, BODYGENCB_WRAPPER(OuterBodyGenCB),
PrivCB, FiniCB, nullptr, nullptr,
OMP_PROC_BIND_default, false));
EXPECT_EQ(NumInnerBodiesGenerated, 1U);
EXPECT_EQ(NumOuterBodiesGenerated, 1U);
EXPECT_EQ(NumFinalizationPoints, 2U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_EQ(M->size(), 5U);
for (Function &OutlinedFn : *M) {
if (F == &OutlinedFn || OutlinedFn.isDeclaration())
continue;
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn.hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasInternalLinkage());
EXPECT_EQ(OutlinedFn.arg_size(), 2U);
EXPECT_TRUE(OutlinedFn.hasOneUse());
User *Usr = OutlinedFn.user_back();
ASSERT_TRUE(isa<CallInst>(Usr));
CallInst *ForkCI = dyn_cast<CallInst>(Usr);
ASSERT_NE(ForkCI, nullptr);
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 3U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 0U));
EXPECT_EQ(ForkCI, Usr);
}
}
TEST_F(OpenMPIRBuilderTest, ParallelNested2Inner) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned NumInnerBodiesGenerated = 0;
unsigned NumOuterBodiesGenerated = 0;
unsigned NumFinalizationPoints = 0;
auto InnerBodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumInnerBodiesGenerated;
return Error::success();
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) {
++NumFinalizationPoints;
return Error::success();
};
auto OuterBodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumOuterBodiesGenerated;
Builder.restoreIP(CodeGenIP);
BasicBlock *CGBB = CodeGenIP.getBlock();
BasicBlock *NewBB1 = SplitBlock(CGBB, &*CodeGenIP.getPoint());
BasicBlock *NewBB2 = SplitBlock(NewBB1, &*NewBB1->getFirstInsertionPt());
CGBB->getTerminator()->eraseFromParent();
;
NewBB1->getTerminator()->eraseFromParent();
;
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP1,
OMPBuilder.createParallel(InsertPointTy(CGBB, CGBB->end()), AllocIP, {},
InnerBodyGenCB, PrivCB, FiniCB, nullptr,
nullptr, OMP_PROC_BIND_default, false));
Builder.restoreIP(AfterIP1);
Builder.CreateBr(NewBB1);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP2,
OMPBuilder.createParallel(InsertPointTy(NewBB1, NewBB1->end()), AllocIP,
{}, InnerBodyGenCB, PrivCB, FiniCB, nullptr,
nullptr, OMP_PROC_BIND_default, false));
Builder.restoreIP(AfterIP2);
Builder.CreateBr(NewBB2);
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(
Loc, AllocaIP, {}, BODYGENCB_WRAPPER(OuterBodyGenCB),
PrivCB, FiniCB, nullptr, nullptr,
OMP_PROC_BIND_default, false));
EXPECT_EQ(NumInnerBodiesGenerated, 2U);
EXPECT_EQ(NumOuterBodiesGenerated, 1U);
EXPECT_EQ(NumFinalizationPoints, 3U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_EQ(M->size(), 6U);
for (Function &OutlinedFn : *M) {
if (F == &OutlinedFn || OutlinedFn.isDeclaration())
continue;
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn.hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasInternalLinkage());
EXPECT_EQ(OutlinedFn.arg_size(), 2U);
unsigned NumAllocas = 0;
for (Instruction &I : instructions(OutlinedFn))
NumAllocas += isa<AllocaInst>(I);
EXPECT_EQ(NumAllocas, 1U);
EXPECT_TRUE(OutlinedFn.hasOneUse());
User *Usr = OutlinedFn.user_back();
ASSERT_TRUE(isa<CallInst>(Usr));
CallInst *ForkCI = dyn_cast<CallInst>(Usr);
ASSERT_NE(ForkCI, nullptr);
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 3U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 0U));
EXPECT_EQ(ForkCI, Usr);
}
}
TEST_F(OpenMPIRBuilderTest, ParallelIfCond) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumBodiesGenerated;
Builder.restoreIP(AllocIP);
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
Builder.restoreIP(CodeGenIP);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Value *Cmp = Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, &*Builder.GetInsertPoint(), &ThenTerm,
&ElseTerm);
return Error::success();
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
++NumPrivatizedVars;
if (!isa<AllocaInst>(Orig)) {
EXPECT_EQ(&Orig, F->arg_begin());
ReplacementValue = &Inner;
return CodeGenIP;
}
// Since the original value is an allocation, it has a pointer type and
// therefore no additional wrapping should happen.
EXPECT_EQ(&Orig, &Inner);
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) {
++NumFinalizationPoints;
// No destructors.
return Error::success();
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(Loc, AllocaIP, {}, BodyGenCB, PrivCB, FiniCB,
Builder.CreateIsNotNull(F->arg_begin()),
nullptr, OMP_PROC_BIND_default, false));
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 1U);
EXPECT_EQ(NumFinalizationPoints, 1U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_NE(PrivAI, nullptr);
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_NE(F, OutlinedFn);
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn->hasInternalLinkage());
EXPECT_EQ(OutlinedFn->arg_size(), 3U);
EXPECT_EQ(&OutlinedFn->getEntryBlock(), PrivAI->getParent());
ASSERT_TRUE(OutlinedFn->hasOneUse());
CallInst *ForkCI = nullptr;
for (User *Usr : OutlinedFn->users()) {
ASSERT_TRUE(isa<CallInst>(Usr));
ForkCI = cast<CallInst>(Usr);
}
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call_if");
EXPECT_EQ(ForkCI->arg_size(), 5U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 1));
EXPECT_EQ(ForkCI->getArgOperand(3)->getType(), Type::getInt32Ty(Ctx));
}
TEST_F(OpenMPIRBuilderTest, ParallelCancelBarrier) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
CallInst *CheckedBarrier = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumBodiesGenerated;
Builder.restoreIP(CodeGenIP);
// Create three barriers, two cancel barriers but only one checked.
Function *CBFn, *BFn;
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, BarrierIP1,
OMPBuilder.createBarrier(Builder.saveIP(), OMPD_parallel));
Builder.restoreIP(BarrierIP1);
CBFn = M->getFunction("__kmpc_cancel_barrier");
BFn = M->getFunction("__kmpc_barrier");
ASSERT_NE(CBFn, nullptr);
ASSERT_EQ(BFn, nullptr);
ASSERT_TRUE(CBFn->hasOneUse());
ASSERT_TRUE(isa<CallInst>(CBFn->user_back()));
ASSERT_TRUE(CBFn->user_back()->hasOneUse());
CheckedBarrier = cast<CallInst>(CBFn->user_back());
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, BarrierIP2,
OMPBuilder.createBarrier(Builder.saveIP(), OMPD_parallel, true));
Builder.restoreIP(BarrierIP2);
CBFn = M->getFunction("__kmpc_cancel_barrier");
BFn = M->getFunction("__kmpc_barrier");
ASSERT_NE(CBFn, nullptr);
ASSERT_NE(BFn, nullptr);
ASSERT_TRUE(CBFn->hasOneUse());
ASSERT_TRUE(BFn->hasOneUse());
ASSERT_TRUE(isa<CallInst>(BFn->user_back()));
ASSERT_TRUE(BFn->user_back()->use_empty());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, BarrierIP3,
OMPBuilder.createBarrier(Builder.saveIP(),
OMPD_parallel, false, false));
Builder.restoreIP(BarrierIP3);
ASSERT_TRUE(CBFn->hasNUses(2));
ASSERT_TRUE(BFn->hasOneUse());
ASSERT_TRUE(CBFn->user_back() != CheckedBarrier);
ASSERT_TRUE(isa<CallInst>(CBFn->user_back()));
ASSERT_TRUE(CBFn->user_back()->use_empty());
};
auto PrivCB = [&](InsertPointTy, InsertPointTy, Value &V, Value &,
Value *&) -> InsertPointTy {
++NumPrivatizedVars;
llvm_unreachable("No privatization callback call expected!");
};
FunctionType *FakeDestructorTy =
FunctionType::get(Type::getVoidTy(Ctx), {Type::getInt32Ty(Ctx)},
/*isVarArg=*/false);
auto *FakeDestructor = Function::Create(
FakeDestructorTy, Function::ExternalLinkage, "fakeDestructor", M.get());
auto FiniCB = [&](InsertPointTy IP) {
++NumFinalizationPoints;
Builder.restoreIP(IP);
Builder.CreateCall(FakeDestructor,
{Builder.getInt32(NumFinalizationPoints)});
return Error::success();
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(Loc, AllocaIP, {}, BODYGENCB_WRAPPER(BodyGenCB),
PrivCB, FiniCB,
Builder.CreateIsNotNull(F->arg_begin()),
nullptr, OMP_PROC_BIND_default, true));
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 0U);
EXPECT_EQ(NumFinalizationPoints, 2U);
EXPECT_TRUE(FakeDestructor->hasNUses(2));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
BasicBlock *ExitBB = nullptr;
for (const User *Usr : FakeDestructor->users()) {
const CallInst *CI = dyn_cast<CallInst>(Usr);
ASSERT_EQ(CI->getCalledFunction(), FakeDestructor);
ASSERT_TRUE(isa<BranchInst>(CI->getNextNode()));
ASSERT_EQ(CI->getNextNode()->getNumSuccessors(), 1U);
if (ExitBB)
ASSERT_EQ(CI->getNextNode()->getSuccessor(0), ExitBB);
else
ExitBB = CI->getNextNode()->getSuccessor(0);
ASSERT_EQ(ExitBB->size(), 1U);
if (!isa<ReturnInst>(ExitBB->front())) {
ASSERT_TRUE(isa<BranchInst>(ExitBB->front()));
ASSERT_EQ(cast<BranchInst>(ExitBB->front()).getNumSuccessors(), 1U);
ASSERT_TRUE(isa<ReturnInst>(
cast<BranchInst>(ExitBB->front()).getSuccessor(0)->front()));
}
}
}
TEST_F(OpenMPIRBuilderTest, ParallelForwardAsPointers) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
Type *I32Ty = Type::getInt32Ty(M->getContext());
Type *PtrTy = PointerType::get(M->getContext(), 0);
Type *StructTy = StructType::get(I32Ty, PtrTy);
Type *VoidTy = Type::getVoidTy(M->getContext());
FunctionCallee RetI32Func = M->getOrInsertFunction("ret_i32", I32Ty);
FunctionCallee TakeI32Func =
M->getOrInsertFunction("take_i32", VoidTy, I32Ty);
FunctionCallee RetI32PtrFunc = M->getOrInsertFunction("ret_i32ptr", PtrTy);
FunctionCallee TakeI32PtrFunc =
M->getOrInsertFunction("take_i32ptr", VoidTy, PtrTy);
FunctionCallee RetStructFunc = M->getOrInsertFunction("ret_struct", StructTy);
FunctionCallee TakeStructFunc =
M->getOrInsertFunction("take_struct", VoidTy, StructTy);
FunctionCallee RetStructPtrFunc =
M->getOrInsertFunction("ret_structptr", PtrTy);
FunctionCallee TakeStructPtrFunc =
M->getOrInsertFunction("take_structPtr", VoidTy, PtrTy);
Value *I32Val = Builder.CreateCall(RetI32Func);
Value *I32PtrVal = Builder.CreateCall(RetI32PtrFunc);
Value *StructVal = Builder.CreateCall(RetStructFunc);
Value *StructPtrVal = Builder.CreateCall(RetStructPtrFunc);
Instruction *Internal;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
IRBuilder<>::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
Internal = Builder.CreateCall(TakeI32Func, I32Val);
Builder.CreateCall(TakeI32PtrFunc, I32PtrVal);
Builder.CreateCall(TakeStructFunc, StructVal);
Builder.CreateCall(TakeStructPtrFunc, StructPtrVal);
return Error::success();
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP, Value &,
Value &Inner, Value *&ReplacementValue) {
ReplacementValue = &Inner;
return CodeGenIP;
};
auto FiniCB = [](InsertPointTy) { return Error::success(); };
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(
Loc, AllocaIP, {}, BodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
Function *OutlinedFn = Internal->getFunction();
Type *Arg2Type = OutlinedFn->getArg(2)->getType();
EXPECT_TRUE(Arg2Type->isPointerTy());
}
TEST_F(OpenMPIRBuilderTest, CanonicalLoopSimple) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
unsigned NumBodiesGenerated = 0;
auto LoopBodyGenCB = [&](InsertPointTy CodeGenIP, llvm::Value *LC) {
NumBodiesGenerated += 1;
Builder.restoreIP(CodeGenIP);
Value *Cmp = Builder.CreateICmpEQ(LC, TripCount);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
return Error::success();
};
ASSERT_EXPECTED_INIT(
CanonicalLoopInfo *, Loop,
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, TripCount));
Builder.restoreIP(Loop->getAfterIP());
ReturnInst *RetInst = Builder.CreateRetVoid();
OMPBuilder.finalize();
Loop->assertOK();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(NumBodiesGenerated, 1U);
// Verify control flow structure (in addition to Loop->assertOK()).
EXPECT_EQ(Loop->getPreheader()->getSinglePredecessor(), &F->getEntryBlock());
EXPECT_EQ(Loop->getAfter(), Builder.GetInsertBlock());
Instruction *IndVar = Loop->getIndVar();
EXPECT_TRUE(isa<PHINode>(IndVar));
EXPECT_EQ(IndVar->getType(), TripCount->getType());
EXPECT_EQ(IndVar->getParent(), Loop->getHeader());
EXPECT_EQ(Loop->getTripCount(), TripCount);
BasicBlock *Body = Loop->getBody();
Instruction *CmpInst = &Body->front();
EXPECT_TRUE(isa<ICmpInst>(CmpInst));
EXPECT_EQ(CmpInst->getOperand(0), IndVar);
BasicBlock *LatchPred = Loop->getLatch()->getSinglePredecessor();
EXPECT_TRUE(llvm::all_of(successors(Body), [=](BasicBlock *SuccBB) {
return SuccBB->getSingleSuccessor() == LatchPred;
}));
EXPECT_EQ(&Loop->getAfter()->front(), RetInst);
}
TEST_F(OpenMPIRBuilderTest, CanonicalLoopTripCount) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
// Check the trip count is computed correctly. We generate the canonical loop
// but rely on the IRBuilder's constant folder to compute the final result
// since all inputs are constant. To verify overflow situations, limit the
// trip count / loop counter widths to 16 bits.
auto EvalTripCount = [&](int64_t Start, int64_t Stop, int64_t Step,
bool IsSigned, bool InclusiveStop) -> int64_t {
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *LCTy = Type::getInt16Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, Start);
Value *StopVal = ConstantInt::get(LCTy, Stop);
Value *StepVal = ConstantInt::get(LCTy, Step);
Value *TripCount = OMPBuilder.calculateCanonicalLoopTripCount(
Loc, StartVal, StopVal, StepVal, IsSigned, InclusiveStop);
return cast<ConstantInt>(TripCount)->getValue().getZExtValue();
};
EXPECT_EQ(EvalTripCount(0, 0, 1, false, false), 0);
EXPECT_EQ(EvalTripCount(0, 1, 2, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 42, 1, false, false), 42);
EXPECT_EQ(EvalTripCount(0, 42, 2, false, false), 21);
EXPECT_EQ(EvalTripCount(21, 42, 1, false, false), 21);
EXPECT_EQ(EvalTripCount(0, 5, 5, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 9, 5, false, false), 2);
EXPECT_EQ(EvalTripCount(0, 11, 5, false, false), 3);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 1, false, false), 0xFFFF);
EXPECT_EQ(EvalTripCount(0xFFFF, 0, 1, false, false), 0);
EXPECT_EQ(EvalTripCount(0xFFFE, 0xFFFF, 1, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 0x100, false, false), 0x100);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 0xFFFF, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 6, 5, false, false), 2);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 0xFFFE, false, false), 2);
EXPECT_EQ(EvalTripCount(0, 0, 1, false, true), 1);
EXPECT_EQ(EvalTripCount(0, 0, 0xFFFF, false, true), 1);
EXPECT_EQ(EvalTripCount(0, 0xFFFE, 1, false, true), 0xFFFF);
EXPECT_EQ(EvalTripCount(0, 0xFFFE, 2, false, true), 0x8000);
EXPECT_EQ(EvalTripCount(0, 0, -1, true, false), 0);
EXPECT_EQ(EvalTripCount(0, 1, -1, true, true), 0);
EXPECT_EQ(EvalTripCount(20, 5, -5, true, false), 3);
EXPECT_EQ(EvalTripCount(20, 5, -5, true, true), 4);
EXPECT_EQ(EvalTripCount(-4, -2, 2, true, false), 1);
EXPECT_EQ(EvalTripCount(-4, -3, 2, true, false), 1);
EXPECT_EQ(EvalTripCount(-4, -2, 2, true, true), 2);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0, 1, true, false), 0x8000);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0, 1, true, true), 0x8001);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0x7FFF, 1, true, false), 0xFFFF);
EXPECT_EQ(EvalTripCount(INT16_MIN + 1, 0x7FFF, 1, true, true), 0xFFFF);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0, 0x7FFF, true, false), 2);
EXPECT_EQ(EvalTripCount(0x7FFF, 0, -1, true, false), 0x7FFF);
EXPECT_EQ(EvalTripCount(0, INT16_MIN, -1, true, false), 0x8000);
EXPECT_EQ(EvalTripCount(0, INT16_MIN, -16, true, false), 0x800);
EXPECT_EQ(EvalTripCount(0x7FFF, INT16_MIN, -1, true, false), 0xFFFF);
EXPECT_EQ(EvalTripCount(0x7FFF, 1, INT16_MIN, true, false), 1);
EXPECT_EQ(EvalTripCount(0x7FFF, -1, INT16_MIN, true, true), 2);
// Finalize the function and verify it.
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CollapseNestedLoops) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
Type *LCTy = F->getArg(0)->getType();
Constant *One = ConstantInt::get(LCTy, 1);
Constant *Two = ConstantInt::get(LCTy, 2);
Value *OuterTripCount =
Builder.CreateAdd(F->getArg(0), Two, "tripcount.outer");
Value *InnerTripCount =
Builder.CreateAdd(F->getArg(0), One, "tripcount.inner");
// Fix an insertion point for ComputeIP.
BasicBlock *LoopNextEnter =
BasicBlock::Create(M->getContext(), "loopnest.enter", F,
Builder.GetInsertBlock()->getNextNode());
BranchInst *EnterBr = Builder.CreateBr(LoopNextEnter);
InsertPointTy ComputeIP{EnterBr->getParent(), EnterBr->getIterator()};
Builder.SetInsertPoint(LoopNextEnter);
OpenMPIRBuilder::LocationDescription OuterLoc(Builder.saveIP(), DL);
CanonicalLoopInfo *InnerLoop = nullptr;
CallInst *InbetweenLead = nullptr;
CallInst *InbetweenTrail = nullptr;
CallInst *Call = nullptr;
auto OuterLoopBodyGenCB = [&](InsertPointTy OuterCodeGenIP, Value *OuterLC) {
Builder.restoreIP(OuterCodeGenIP);
InbetweenLead =
createPrintfCall(Builder, "In-between lead i=%d\\n", {OuterLC});
auto InnerLoopBodyGenCB = [&](InsertPointTy InnerCodeGenIP,
Value *InnerLC) {
Builder.restoreIP(InnerCodeGenIP);
Call = createPrintfCall(Builder, "body i=%d j=%d\\n", {OuterLC, InnerLC});
return Error::success();
};
ASSERT_EXPECTED_INIT(
CanonicalLoopInfo *, InnerLoopResult,
OMPBuilder.createCanonicalLoop(Builder.saveIP(), InnerLoopBodyGenCB,
InnerTripCount, "inner"));
InnerLoop = InnerLoopResult;
Builder.restoreIP(InnerLoop->getAfterIP());
InbetweenTrail =
createPrintfCall(Builder, "In-between trail i=%d\\n", {OuterLC});
};
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, OuterLoop,
OMPBuilder.createCanonicalLoop(
OuterLoc, LOOP_BODYGENCB_WRAPPER(OuterLoopBodyGenCB),
OuterTripCount, "outer"));
// Finish the function.
Builder.restoreIP(OuterLoop->getAfterIP());
Builder.CreateRetVoid();
CanonicalLoopInfo *Collapsed =
OMPBuilder.collapseLoops(DL, {OuterLoop, InnerLoop}, ComputeIP);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
// Verify control flow and BB order.
BasicBlock *RefOrder[] = {
Collapsed->getPreheader(), Collapsed->getHeader(),
Collapsed->getCond(), Collapsed->getBody(),
InbetweenLead->getParent(), Call->getParent(),
InbetweenTrail->getParent(), Collapsed->getLatch(),
Collapsed->getExit(), Collapsed->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
// Verify the total trip count.
auto *TripCount = cast<MulOperator>(Collapsed->getTripCount());
EXPECT_EQ(TripCount->getOperand(0), OuterTripCount);
EXPECT_EQ(TripCount->getOperand(1), InnerTripCount);
// Verify the changed indvar.
auto *OuterIV = cast<BinaryOperator>(Call->getOperand(1));
EXPECT_EQ(OuterIV->getOpcode(), Instruction::UDiv);
EXPECT_EQ(OuterIV->getParent(), Collapsed->getBody());
EXPECT_EQ(OuterIV->getOperand(1), InnerTripCount);
EXPECT_EQ(OuterIV->getOperand(0), Collapsed->getIndVar());
auto *InnerIV = cast<BinaryOperator>(Call->getOperand(2));
EXPECT_EQ(InnerIV->getOpcode(), Instruction::URem);
EXPECT_EQ(InnerIV->getParent(), Collapsed->getBody());
EXPECT_EQ(InnerIV->getOperand(0), Collapsed->getIndVar());
EXPECT_EQ(InnerIV->getOperand(1), InnerTripCount);
EXPECT_EQ(InbetweenLead->getOperand(1), OuterIV);
EXPECT_EQ(InbetweenTrail->getOperand(1), OuterIV);
}
TEST_F(OpenMPIRBuilderTest, TileSingleLoop) {
OpenMPIRBuilder OMPBuilder(*M);
CallInst *Call;
BasicBlock *BodyCode;
CanonicalLoopInfo *Loop =
buildSingleLoopFunction(DL, OMPBuilder, 32, &Call, &BodyCode);
ASSERT_NE(Loop, nullptr);
Instruction *OrigIndVar = Loop->getIndVar();
EXPECT_EQ(Call->getOperand(1), OrigIndVar);
// Tile the loop.
Constant *TileSize = ConstantInt::get(Loop->getIndVarType(), APInt(32, 7));
std::vector<CanonicalLoopInfo *> GenLoops =
OMPBuilder.tileLoops(DL, {Loop}, {TileSize});
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(GenLoops.size(), 2u);
CanonicalLoopInfo *Floor = GenLoops[0];
CanonicalLoopInfo *Tile = GenLoops[1];
BasicBlock *RefOrder[] = {
Floor->getPreheader(), Floor->getHeader(), Floor->getCond(),
Floor->getBody(), Tile->getPreheader(), Tile->getHeader(),
Tile->getCond(), Tile->getBody(), BodyCode,
Tile->getLatch(), Tile->getExit(), Tile->getAfter(),
Floor->getLatch(), Floor->getExit(), Floor->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
// Check the induction variable.
EXPECT_EQ(Call->getParent(), BodyCode);
auto *Shift = cast<AddOperator>(Call->getOperand(1));
EXPECT_EQ(cast<Instruction>(Shift)->getParent(), Tile->getBody());
EXPECT_EQ(Shift->getOperand(1), Tile->getIndVar());
auto *Scale = cast<MulOperator>(Shift->getOperand(0));
EXPECT_EQ(cast<Instruction>(Scale)->getParent(), Tile->getBody());
EXPECT_EQ(Scale->getOperand(0), TileSize);
EXPECT_EQ(Scale->getOperand(1), Floor->getIndVar());
}
TEST_F(OpenMPIRBuilderTest, TileNestedLoops) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
Type *LCTy = TripCount->getType();
BasicBlock *BodyCode = nullptr;
CanonicalLoopInfo *InnerLoop = nullptr;
auto OuterLoopBodyGenCB = [&](InsertPointTy OuterCodeGenIP,
llvm::Value *OuterLC) {
auto InnerLoopBodyGenCB = [&](InsertPointTy InnerCodeGenIP,
llvm::Value *InnerLC) {
Builder.restoreIP(InnerCodeGenIP);
BodyCode = Builder.GetInsertBlock();
// Add something that consumes the induction variables to the body.
createPrintfCall(Builder, "i=%d j=%d\\n", {OuterLC, InnerLC});
return Error::success();
};
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, InnerLoopResult,
OMPBuilder.createCanonicalLoop(OuterCodeGenIP,
InnerLoopBodyGenCB,
TripCount, "inner"));
InnerLoop = InnerLoopResult;
};
ASSERT_EXPECTED_INIT(
CanonicalLoopInfo *, OuterLoop,
OMPBuilder.createCanonicalLoop(
Loc, LOOP_BODYGENCB_WRAPPER(OuterLoopBodyGenCB), TripCount, "outer"));
// Finalize the function.
Builder.restoreIP(OuterLoop->getAfterIP());
Builder.CreateRetVoid();
// Tile to loop nest.
Constant *OuterTileSize = ConstantInt::get(LCTy, APInt(32, 11));
Constant *InnerTileSize = ConstantInt::get(LCTy, APInt(32, 7));
std::vector<CanonicalLoopInfo *> GenLoops = OMPBuilder.tileLoops(
DL, {OuterLoop, InnerLoop}, {OuterTileSize, InnerTileSize});
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(GenLoops.size(), 4u);
CanonicalLoopInfo *Floor1 = GenLoops[0];
CanonicalLoopInfo *Floor2 = GenLoops[1];
CanonicalLoopInfo *Tile1 = GenLoops[2];
CanonicalLoopInfo *Tile2 = GenLoops[3];
BasicBlock *RefOrder[] = {
Floor1->getPreheader(),
Floor1->getHeader(),
Floor1->getCond(),
Floor1->getBody(),
Floor2->getPreheader(),
Floor2->getHeader(),
Floor2->getCond(),
Floor2->getBody(),
Tile1->getPreheader(),
Tile1->getHeader(),
Tile1->getCond(),
Tile1->getBody(),
Tile2->getPreheader(),
Tile2->getHeader(),
Tile2->getCond(),
Tile2->getBody(),
BodyCode,
Tile2->getLatch(),
Tile2->getExit(),
Tile2->getAfter(),
Tile1->getLatch(),
Tile1->getExit(),
Tile1->getAfter(),
Floor2->getLatch(),
Floor2->getExit(),
Floor2->getAfter(),
Floor1->getLatch(),
Floor1->getExit(),
Floor1->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
}
TEST_F(OpenMPIRBuilderTest, TileNestedLoopsWithBounds) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
Value *TripCount = F->getArg(0);
Type *LCTy = TripCount->getType();
Value *OuterStartVal = ConstantInt::get(LCTy, 2);
Value *OuterStopVal = TripCount;
Value *OuterStep = ConstantInt::get(LCTy, 5);
Value *InnerStartVal = ConstantInt::get(LCTy, 13);
Value *InnerStopVal = TripCount;
Value *InnerStep = ConstantInt::get(LCTy, 3);
// Fix an insertion point for ComputeIP.
BasicBlock *LoopNextEnter =
BasicBlock::Create(M->getContext(), "loopnest.enter", F,
Builder.GetInsertBlock()->getNextNode());
BranchInst *EnterBr = Builder.CreateBr(LoopNextEnter);
InsertPointTy ComputeIP{EnterBr->getParent(), EnterBr->getIterator()};
InsertPointTy LoopIP{LoopNextEnter, LoopNextEnter->begin()};
OpenMPIRBuilder::LocationDescription Loc({LoopIP, DL});
BasicBlock *BodyCode = nullptr;
CanonicalLoopInfo *InnerLoop = nullptr;
CallInst *Call = nullptr;
auto OuterLoopBodyGenCB = [&](InsertPointTy OuterCodeGenIP,
llvm::Value *OuterLC) {
auto InnerLoopBodyGenCB = [&](InsertPointTy InnerCodeGenIP,
llvm::Value *InnerLC) {
Builder.restoreIP(InnerCodeGenIP);
BodyCode = Builder.GetInsertBlock();
// Add something that consumes the induction variable to the body.
Call = createPrintfCall(Builder, "i=%d j=%d\\n", {OuterLC, InnerLC});
return Error::success();
};
ASSERT_EXPECTED_INIT(
CanonicalLoopInfo *, InnerLoopResult,
OMPBuilder.createCanonicalLoop(OuterCodeGenIP, InnerLoopBodyGenCB,
InnerStartVal, InnerStopVal, InnerStep,
false, false, ComputeIP, "inner"));
InnerLoop = InnerLoopResult;
};
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, OuterLoop,
OMPBuilder.createCanonicalLoop(
Loc, LOOP_BODYGENCB_WRAPPER(OuterLoopBodyGenCB),
OuterStartVal, OuterStopVal, OuterStep, false, false,
ComputeIP, "outer"));
// Finalize the function
Builder.restoreIP(OuterLoop->getAfterIP());
Builder.CreateRetVoid();
// Tile the loop nest.
Constant *TileSize0 = ConstantInt::get(LCTy, APInt(32, 11));
Constant *TileSize1 = ConstantInt::get(LCTy, APInt(32, 7));
std::vector<CanonicalLoopInfo *> GenLoops =
OMPBuilder.tileLoops(DL, {OuterLoop, InnerLoop}, {TileSize0, TileSize1});
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(GenLoops.size(), 4u);
CanonicalLoopInfo *Floor0 = GenLoops[0];
CanonicalLoopInfo *Floor1 = GenLoops[1];
CanonicalLoopInfo *Tile0 = GenLoops[2];
CanonicalLoopInfo *Tile1 = GenLoops[3];
BasicBlock *RefOrder[] = {
Floor0->getPreheader(),
Floor0->getHeader(),
Floor0->getCond(),
Floor0->getBody(),
Floor1->getPreheader(),
Floor1->getHeader(),
Floor1->getCond(),
Floor1->getBody(),
Tile0->getPreheader(),
Tile0->getHeader(),
Tile0->getCond(),
Tile0->getBody(),
Tile1->getPreheader(),
Tile1->getHeader(),
Tile1->getCond(),
Tile1->getBody(),
BodyCode,
Tile1->getLatch(),
Tile1->getExit(),
Tile1->getAfter(),
Tile0->getLatch(),
Tile0->getExit(),
Tile0->getAfter(),
Floor1->getLatch(),
Floor1->getExit(),
Floor1->getAfter(),
Floor0->getLatch(),
Floor0->getExit(),
Floor0->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
EXPECT_EQ(Call->getParent(), BodyCode);
auto *RangeShift0 = cast<AddOperator>(Call->getOperand(1));
EXPECT_EQ(RangeShift0->getOperand(1), OuterStartVal);
auto *RangeScale0 = cast<MulOperator>(RangeShift0->getOperand(0));
EXPECT_EQ(RangeScale0->getOperand(1), OuterStep);
auto *TileShift0 = cast<AddOperator>(RangeScale0->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileShift0)->getParent(), Tile1->getBody());
EXPECT_EQ(TileShift0->getOperand(1), Tile0->getIndVar());
auto *TileScale0 = cast<MulOperator>(TileShift0->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileScale0)->getParent(), Tile1->getBody());
EXPECT_EQ(TileScale0->getOperand(0), TileSize0);
EXPECT_EQ(TileScale0->getOperand(1), Floor0->getIndVar());
auto *RangeShift1 = cast<AddOperator>(Call->getOperand(2));
EXPECT_EQ(cast<Instruction>(RangeShift1)->getParent(), BodyCode);
EXPECT_EQ(RangeShift1->getOperand(1), InnerStartVal);
auto *RangeScale1 = cast<MulOperator>(RangeShift1->getOperand(0));
EXPECT_EQ(cast<Instruction>(RangeScale1)->getParent(), BodyCode);
EXPECT_EQ(RangeScale1->getOperand(1), InnerStep);
auto *TileShift1 = cast<AddOperator>(RangeScale1->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileShift1)->getParent(), Tile1->getBody());
EXPECT_EQ(TileShift1->getOperand(1), Tile1->getIndVar());
auto *TileScale1 = cast<MulOperator>(TileShift1->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileScale1)->getParent(), Tile1->getBody());
EXPECT_EQ(TileScale1->getOperand(0), TileSize1);
EXPECT_EQ(TileScale1->getOperand(1), Floor1->getIndVar());
}
TEST_F(OpenMPIRBuilderTest, TileSingleLoopCounts) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
// Create a loop, tile it, and extract its trip count. All input values are
// constant and IRBuilder evaluates all-constant arithmetic inplace, such that
// the floor trip count itself will be a ConstantInt. Unfortunately we cannot
// do the same for the tile loop.
auto GetFloorCount = [&](int64_t Start, int64_t Stop, int64_t Step,
bool IsSigned, bool InclusiveStop,
int64_t TileSize) -> uint64_t {
OpenMPIRBuilder::LocationDescription Loc(Builder.saveIP(), DL);
Type *LCTy = Type::getInt16Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, Start);
Value *StopVal = ConstantInt::get(LCTy, Stop);
Value *StepVal = ConstantInt::get(LCTy, Step);
// Generate a loop.
auto LoopBodyGenCB = [&](InsertPointTy CodeGenIP, llvm::Value *LC) {
return Error::success();
};
ASSERT_EXPECTED_INIT_RETURN(
CanonicalLoopInfo *, Loop,
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, StartVal, StopVal,
StepVal, IsSigned, InclusiveStop),
(unsigned)-1);
InsertPointTy AfterIP = Loop->getAfterIP();
// Tile the loop.
Value *TileSizeVal = ConstantInt::get(LCTy, TileSize);
std::vector<CanonicalLoopInfo *> GenLoops =
OMPBuilder.tileLoops(Loc.DL, {Loop}, {TileSizeVal});
// Set the insertion pointer to after loop, where the next loop will be
// emitted.
Builder.restoreIP(AfterIP);
// Extract the trip count.
CanonicalLoopInfo *FloorLoop = GenLoops[0];
Value *FloorTripCount = FloorLoop->getTripCount();
return cast<ConstantInt>(FloorTripCount)->getValue().getZExtValue();
};
// Empty iteration domain.
EXPECT_EQ(GetFloorCount(0, 0, 1, false, false, 7), 0u);
EXPECT_EQ(GetFloorCount(0, -1, 1, false, true, 7), 0u);
EXPECT_EQ(GetFloorCount(-1, -1, -1, true, false, 7), 0u);
EXPECT_EQ(GetFloorCount(-1, 0, -1, true, true, 7), 0u);
EXPECT_EQ(GetFloorCount(-1, -1, 3, true, false, 7), 0u);
// Only complete tiles.
EXPECT_EQ(GetFloorCount(0, 14, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 14, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(1, 15, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, -14, -1, true, false, 7), 2u);
EXPECT_EQ(GetFloorCount(-1, -14, -1, true, true, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 3 * 7 * 2, 3, false, false, 7), 2u);
// Only a partial tile.
EXPECT_EQ(GetFloorCount(0, 1, 1, false, false, 7), 1u);
EXPECT_EQ(GetFloorCount(0, 6, 1, false, false, 7), 1u);
EXPECT_EQ(GetFloorCount(-1, 1, 3, true, false, 7), 1u);
EXPECT_EQ(GetFloorCount(-1, -2, -1, true, false, 7), 1u);
EXPECT_EQ(GetFloorCount(0, 2, 3, false, false, 7), 1u);
// Complete and partial tiles.
EXPECT_EQ(GetFloorCount(0, 13, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 15, 1, false, false, 7), 3u);
EXPECT_EQ(GetFloorCount(-1, -14, -1, true, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 3 * 7 * 5 - 1, 3, false, false, 7), 5u);
EXPECT_EQ(GetFloorCount(-1, -3 * 7 * 5, -3, true, false, 7), 5u);
// Close to 16-bit integer range.
EXPECT_EQ(GetFloorCount(0, 0xFFFF, 1, false, false, 1), 0xFFFFu);
EXPECT_EQ(GetFloorCount(0, 0xFFFF, 1, false, false, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(0, 0xFFFE, 1, false, true, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(-0x8000, 0x7FFF, 1, true, false, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(-0x7FFF, 0x7FFF, 1, true, true, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(0, 0xFFFE, 1, false, false, 0xFFFF), 1u);
EXPECT_EQ(GetFloorCount(-0x8000, 0x7FFF, 1, true, false, 0xFFFF), 1u);
// Finalize the function.
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, ApplySimd) {
OpenMPIRBuilder OMPBuilder(*M);
MapVector<Value *, Value *> AlignedVars;
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Simd-ize the loop.
OMPBuilder.applySimd(CLI, AlignedVars, /* IfCond */ nullptr,
OrderKind::OMP_ORDER_unknown,
/* Simdlen */ nullptr,
/* Safelen */ nullptr);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_TRUE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, ApplySimdCustomAligned) {
OpenMPIRBuilder OMPBuilder(*M);
IRBuilder<> Builder(BB);
const int AlignmentValue = 32;
llvm::BasicBlock *sourceBlock = Builder.GetInsertBlock();
AllocaInst *Alloc1 =
Builder.CreateAlloca(Builder.getPtrTy(), Builder.getInt64(1));
LoadInst *Load1 = Builder.CreateLoad(Alloc1->getAllocatedType(), Alloc1);
MapVector<Value *, Value *> AlignedVars;
AlignedVars.insert({Load1, Builder.getInt64(AlignmentValue)});
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Simd-ize the loop.
OMPBuilder.applySimd(CLI, AlignedVars, /* IfCond */ nullptr,
OrderKind::OMP_ORDER_unknown,
/* Simdlen */ nullptr,
/* Safelen */ nullptr);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_TRUE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
// Check if number of assumption instructions is equal to number of aligned
// variables
size_t NumAssummptionCallsInPreheader =
count_if(*sourceBlock, [](Instruction &I) { return isa<AssumeInst>(I); });
EXPECT_EQ(NumAssummptionCallsInPreheader, AlignedVars.size());
// Check if variables are correctly aligned
for (Instruction &Instr : *sourceBlock) {
if (!isa<AssumeInst>(Instr))
continue;
AssumeInst *AssumeInstruction = cast<AssumeInst>(&Instr);
if (AssumeInstruction->getNumTotalBundleOperands()) {
auto Bundle = AssumeInstruction->getOperandBundleAt(0);
if (Bundle.getTagName() == "align") {
EXPECT_TRUE(isa<ConstantInt>(Bundle.Inputs[1]));
auto ConstIntVal = dyn_cast<ConstantInt>(Bundle.Inputs[1]);
EXPECT_EQ(ConstIntVal->getSExtValue(), AlignmentValue);
}
}
}
}
TEST_F(OpenMPIRBuilderTest, ApplySimdlen) {
OpenMPIRBuilder OMPBuilder(*M);
MapVector<Value *, Value *> AlignedVars;
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Simd-ize the loop.
OMPBuilder.applySimd(CLI, AlignedVars,
/* IfCond */ nullptr, OrderKind::OMP_ORDER_unknown,
ConstantInt::get(Type::getInt32Ty(Ctx), 3),
/* Safelen */ nullptr);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
EXPECT_EQ(getIntLoopAttribute(L, "llvm.loop.vectorize.width"), 3);
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_TRUE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, ApplySafelenOrderConcurrent) {
OpenMPIRBuilder OMPBuilder(*M);
MapVector<Value *, Value *> AlignedVars;
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Simd-ize the loop.
OMPBuilder.applySimd(
CLI, AlignedVars, /* IfCond */ nullptr, OrderKind::OMP_ORDER_concurrent,
/* Simdlen */ nullptr, ConstantInt::get(Type::getInt32Ty(Ctx), 3));
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
// Parallel metadata shoudl be attached because of presence of
// the order(concurrent) OpenMP clause
EXPECT_TRUE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
EXPECT_EQ(getIntLoopAttribute(L, "llvm.loop.vectorize.width"), 3);
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_TRUE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, ApplySafelen) {
OpenMPIRBuilder OMPBuilder(*M);
MapVector<Value *, Value *> AlignedVars;
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
OMPBuilder.applySimd(
CLI, AlignedVars, /* IfCond */ nullptr, OrderKind::OMP_ORDER_unknown,
/* Simdlen */ nullptr, ConstantInt::get(Type::getInt32Ty(Ctx), 3));
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_FALSE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
EXPECT_EQ(getIntLoopAttribute(L, "llvm.loop.vectorize.width"), 3);
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_FALSE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, ApplySimdlenSafelen) {
OpenMPIRBuilder OMPBuilder(*M);
MapVector<Value *, Value *> AlignedVars;
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
OMPBuilder.applySimd(CLI, AlignedVars, /* IfCond */ nullptr,
OrderKind::OMP_ORDER_unknown,
ConstantInt::get(Type::getInt32Ty(Ctx), 2),
ConstantInt::get(Type::getInt32Ty(Ctx), 3));
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_FALSE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
EXPECT_EQ(getIntLoopAttribute(L, "llvm.loop.vectorize.width"), 2);
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_FALSE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, ApplySimdIf) {
OpenMPIRBuilder OMPBuilder(*M);
IRBuilder<> Builder(BB);
MapVector<Value *, Value *> AlignedVars;
AllocaInst *Alloc1 = Builder.CreateAlloca(Builder.getInt32Ty());
AllocaInst *Alloc2 = Builder.CreateAlloca(Builder.getInt32Ty());
// Generation of if condition
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), Alloc1);
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 1U), Alloc2);
LoadInst *Load1 = Builder.CreateLoad(Alloc1->getAllocatedType(), Alloc1);
LoadInst *Load2 = Builder.CreateLoad(Alloc2->getAllocatedType(), Alloc2);
Value *IfCmp = Builder.CreateICmpNE(Load1, Load2);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Simd-ize the loop with if condition
OMPBuilder.applySimd(CLI, AlignedVars, IfCmp, OrderKind::OMP_ORDER_unknown,
ConstantInt::get(Type::getInt32Ty(Ctx), 3),
/* Safelen */ nullptr);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
// Check if there is one loop containing branches with and without
// vectorization
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl[0];
EXPECT_TRUE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
// These attributes cannot not be set because the loop is shared between simd
// and non-simd versions
EXPECT_FALSE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
EXPECT_EQ(getIntLoopAttribute(L, "llvm.loop.vectorize.width"), 0);
// Check for if condition
BasicBlock *LoopBody = CLI->getBody();
BranchInst *IfCond = cast<BranchInst>(LoopBody->getTerminator());
EXPECT_EQ(IfCond->getCondition(), IfCmp);
BasicBlock *TrueBranch = IfCond->getSuccessor(0);
BasicBlock *FalseBranch = IfCond->getSuccessor(1)->getUniqueSuccessor();
// Check for llvm.access.group metadata attached to the printf
// function in the true body.
EXPECT_TRUE(any_of(*TrueBranch, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
// Check for llvm.access.group metadata attached to the printf
// function in the false body.
EXPECT_FALSE(any_of(*FalseBranch, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, UnrollLoopFull) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Unroll the loop.
OMPBuilder.unrollLoopFull(DL, CLI);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.unroll.enable"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.unroll.full"));
}
TEST_F(OpenMPIRBuilderTest, UnrollLoopPartial) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Unroll the loop.
CanonicalLoopInfo *UnrolledLoop = nullptr;
OMPBuilder.unrollLoopPartial(DL, CLI, 5, &UnrolledLoop);
ASSERT_NE(UnrolledLoop, nullptr);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
UnrolledLoop->assertOK();
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *Outer = TopLvl.front();
EXPECT_EQ(Outer->getHeader(), UnrolledLoop->getHeader());
EXPECT_EQ(Outer->getLoopLatch(), UnrolledLoop->getLatch());
EXPECT_EQ(Outer->getExitingBlock(), UnrolledLoop->getCond());
EXPECT_EQ(Outer->getExitBlock(), UnrolledLoop->getExit());
EXPECT_EQ(Outer->getSubLoops().size(), 1u);
Loop *Inner = Outer->getSubLoops().front();
EXPECT_TRUE(getBooleanLoopAttribute(Inner, "llvm.loop.unroll.enable"));
EXPECT_EQ(getIntLoopAttribute(Inner, "llvm.loop.unroll.count"), 5);
}
TEST_F(OpenMPIRBuilderTest, UnrollLoopHeuristic) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
ASSERT_NE(CLI, nullptr);
// Unroll the loop.
OMPBuilder.unrollLoopHeuristic(DL, CLI);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.unroll.enable"));
}
TEST_F(OpenMPIRBuilderTest, StaticWorkshareLoopTarget) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
M->setDataLayout(
"e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:"
"256:256:32-p8:128:128:128:48-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-"
"v192:"
"256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8");
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = true;
OMPBuilder.Config.setIsGPU(false);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
InsertPointTy AllocaIP = Builder.saveIP();
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
auto LoopBodyGen = [&](InsertPointTy, Value *) { return Error::success(); };
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, CLI,
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGen,
StartVal, StopVal,
StepVal, false, false));
BasicBlock *Preheader = CLI->getPreheader();
Value *TripCount = CLI->getTripCount();
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.applyWorkshareLoop(
DL, CLI, AllocaIP, true, OMP_SCHEDULE_Static,
nullptr, false, false, false, false,
WorksharingLoopType::ForStaticLoop));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *WorkshareLoopRuntimeCall = nullptr;
int WorkshareLoopRuntimeCallCnt = 0;
for (auto Inst = Preheader->begin(); Inst != Preheader->end(); ++Inst) {
CallInst *Call = dyn_cast<CallInst>(Inst);
if (!Call)
continue;
if (!Call->getCalledFunction())
continue;
if (Call->getCalledFunction()->getName() == "__kmpc_for_static_loop_4u") {
WorkshareLoopRuntimeCall = Call;
WorkshareLoopRuntimeCallCnt++;
}
}
EXPECT_NE(WorkshareLoopRuntimeCall, nullptr);
// Verify that there is only one call to workshare loop function
EXPECT_EQ(WorkshareLoopRuntimeCallCnt, 1);
// Check that pointer to loop body function is passed as second argument
Value *LoopBodyFuncArg = WorkshareLoopRuntimeCall->getArgOperand(1);
EXPECT_EQ(Builder.getPtrTy(), LoopBodyFuncArg->getType());
Function *ArgFunction = dyn_cast<Function>(LoopBodyFuncArg);
EXPECT_NE(ArgFunction, nullptr);
EXPECT_EQ(ArgFunction->arg_size(), 1u);
EXPECT_EQ(ArgFunction->getArg(0)->getType(), TripCount->getType());
// Check that no variables except for loop counter are used in loop body
EXPECT_EQ(Constant::getNullValue(Builder.getPtrTy()),
WorkshareLoopRuntimeCall->getArgOperand(2));
// Check loop trip count argument
EXPECT_EQ(TripCount, WorkshareLoopRuntimeCall->getArgOperand(3));
}
TEST_F(OpenMPIRBuilderTest, StaticWorkShareLoop) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
auto LoopBodyGen = [&](InsertPointTy, llvm::Value *) {
return Error::success();
};
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, CLI,
OMPBuilder.createCanonicalLoop(
Loc, LoopBodyGen, StartVal, StopVal, StepVal,
/*IsSigned=*/false, /*InclusiveStop=*/false));
BasicBlock *Preheader = CLI->getPreheader();
BasicBlock *Body = CLI->getBody();
Value *IV = CLI->getIndVar();
BasicBlock *ExitBlock = CLI->getExit();
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
InsertPointTy AllocaIP = Builder.saveIP();
ASSERT_THAT_EXPECTED(OMPBuilder.applyWorkshareLoop(DL, CLI, AllocaIP,
/*NeedsBarrier=*/true,
OMP_SCHEDULE_Static),
Succeeded());
BasicBlock *Cond = Body->getSinglePredecessor();
Instruction *Cmp = &*Cond->begin();
Value *TripCount = Cmp->getOperand(1);
auto AllocaIter = BB->begin();
ASSERT_GE(std::distance(BB->begin(), BB->end()), 4);
AllocaInst *PLastIter = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PLowerBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PUpperBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PStride = dyn_cast<AllocaInst>(&*(AllocaIter++));
EXPECT_NE(PLastIter, nullptr);
EXPECT_NE(PLowerBound, nullptr);
EXPECT_NE(PUpperBound, nullptr);
EXPECT_NE(PStride, nullptr);
auto PreheaderIter = Preheader->begin();
ASSERT_GE(std::distance(Preheader->begin(), Preheader->end()), 7);
StoreInst *LowerBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *UpperBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *StrideStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
ASSERT_NE(LowerBoundStore, nullptr);
ASSERT_NE(UpperBoundStore, nullptr);
ASSERT_NE(StrideStore, nullptr);
auto *OrigLowerBound =
dyn_cast<ConstantInt>(LowerBoundStore->getValueOperand());
auto *OrigUpperBound =
dyn_cast<ConstantInt>(UpperBoundStore->getValueOperand());
auto *OrigStride = dyn_cast<ConstantInt>(StrideStore->getValueOperand());
ASSERT_NE(OrigLowerBound, nullptr);
ASSERT_NE(OrigUpperBound, nullptr);
ASSERT_NE(OrigStride, nullptr);
EXPECT_EQ(OrigLowerBound->getValue(), 0);
EXPECT_EQ(OrigUpperBound->getValue(), 20);
EXPECT_EQ(OrigStride->getValue(), 1);
// Check that the loop IV is updated to account for the lower bound returned
// by the OpenMP runtime call.
BinaryOperator *Add = dyn_cast<BinaryOperator>(&Body->front());
EXPECT_EQ(Add->getOperand(0), IV);
auto *LoadedLowerBound = dyn_cast<LoadInst>(Add->getOperand(1));
ASSERT_NE(LoadedLowerBound, nullptr);
EXPECT_EQ(LoadedLowerBound->getPointerOperand(), PLowerBound);
// Check that the trip count is updated to account for the lower and upper
// bounds return by the OpenMP runtime call.
auto *AddOne = dyn_cast<Instruction>(TripCount);
ASSERT_NE(AddOne, nullptr);
ASSERT_TRUE(AddOne->isBinaryOp());
auto *One = dyn_cast<ConstantInt>(AddOne->getOperand(1));
ASSERT_NE(One, nullptr);
EXPECT_EQ(One->getValue(), 1);
auto *Difference = dyn_cast<Instruction>(AddOne->getOperand(0));
ASSERT_NE(Difference, nullptr);
ASSERT_TRUE(Difference->isBinaryOp());
EXPECT_EQ(Difference->getOperand(1), LoadedLowerBound);
auto *LoadedUpperBound = dyn_cast<LoadInst>(Difference->getOperand(0));
ASSERT_NE(LoadedUpperBound, nullptr);
EXPECT_EQ(LoadedUpperBound->getPointerOperand(), PUpperBound);
// The original loop iterator should only be used in the condition, in the
// increment and in the statement that adds the lower bound to it.
EXPECT_EQ(std::distance(IV->use_begin(), IV->use_end()), 3);
// The exit block should contain the "fini" call and the barrier call,
// plus the call to obtain the thread ID.
size_t NumCallsInExitBlock =
count_if(*ExitBlock, [](Instruction &I) { return isa<CallInst>(I); });
EXPECT_EQ(NumCallsInExitBlock, 3u);
}
TEST_P(OpenMPIRBuilderTestWithIVBits, StaticChunkedWorkshareLoop) {
unsigned IVBits = GetParam();
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
BasicBlock *Body;
CallInst *Call;
CanonicalLoopInfo *CLI =
buildSingleLoopFunction(DL, OMPBuilder, IVBits, &Call, &Body);
ASSERT_NE(CLI, nullptr);
Instruction *OrigIndVar = CLI->getIndVar();
EXPECT_EQ(Call->getOperand(1), OrigIndVar);
Type *LCTy = Type::getInt32Ty(Ctx);
Value *ChunkSize = ConstantInt::get(LCTy, 5);
InsertPointTy AllocaIP{&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt()};
ASSERT_THAT_EXPECTED(OMPBuilder.applyWorkshareLoop(DL, CLI, AllocaIP,
/*NeedsBarrier=*/true,
OMP_SCHEDULE_Static,
ChunkSize),
Succeeded());
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
BasicBlock *Entry = &F->getEntryBlock();
BasicBlock *Preheader = Entry->getSingleSuccessor();
BasicBlock *DispatchPreheader = Preheader->getSingleSuccessor();
BasicBlock *DispatchHeader = DispatchPreheader->getSingleSuccessor();
BasicBlock *DispatchCond = DispatchHeader->getSingleSuccessor();
BasicBlock *DispatchBody = succ_begin(DispatchCond)[0];
BasicBlock *DispatchExit = succ_begin(DispatchCond)[1];
BasicBlock *DispatchAfter = DispatchExit->getSingleSuccessor();
BasicBlock *Return = DispatchAfter->getSingleSuccessor();
BasicBlock *ChunkPreheader = DispatchBody->getSingleSuccessor();
BasicBlock *ChunkHeader = ChunkPreheader->getSingleSuccessor();
BasicBlock *ChunkCond = ChunkHeader->getSingleSuccessor();
BasicBlock *ChunkBody = succ_begin(ChunkCond)[0];
BasicBlock *ChunkExit = succ_begin(ChunkCond)[1];
BasicBlock *ChunkInc = ChunkBody->getSingleSuccessor();
BasicBlock *ChunkAfter = ChunkExit->getSingleSuccessor();
BasicBlock *DispatchInc = ChunkAfter;
EXPECT_EQ(ChunkBody, Body);
EXPECT_EQ(ChunkInc->getSingleSuccessor(), ChunkHeader);
EXPECT_EQ(DispatchInc->getSingleSuccessor(), DispatchHeader);
EXPECT_TRUE(isa<ReturnInst>(Return->front()));
Value *NewIV = Call->getOperand(1);
EXPECT_EQ(NewIV->getType()->getScalarSizeInBits(), IVBits);
CallInst *InitCall = findSingleCall(
F,
(IVBits > 32) ? omp::RuntimeFunction::OMPRTL___kmpc_for_static_init_8u
: omp::RuntimeFunction::OMPRTL___kmpc_for_static_init_4u,
OMPBuilder);
EXPECT_EQ(InitCall->getParent(), Preheader);
EXPECT_EQ(cast<ConstantInt>(InitCall->getArgOperand(2))->getSExtValue(), 33);
EXPECT_EQ(cast<ConstantInt>(InitCall->getArgOperand(7))->getSExtValue(), 1);
EXPECT_EQ(cast<ConstantInt>(InitCall->getArgOperand(8))->getSExtValue(), 5);
CallInst *FiniCall = findSingleCall(
F, omp::RuntimeFunction::OMPRTL___kmpc_for_static_fini, OMPBuilder);
EXPECT_EQ(FiniCall->getParent(), DispatchExit);
CallInst *BarrierCall = findSingleCall(
F, omp::RuntimeFunction::OMPRTL___kmpc_barrier, OMPBuilder);
EXPECT_EQ(BarrierCall->getParent(), DispatchExit);
}
INSTANTIATE_TEST_SUITE_P(IVBits, OpenMPIRBuilderTestWithIVBits,
::testing::Values(8, 16, 32, 64));
TEST_P(OpenMPIRBuilderTestWithParams, DynamicWorkShareLoop) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
omp::OMPScheduleType SchedType = GetParam();
uint32_t ChunkSize = 1;
switch (SchedType & ~OMPScheduleType::ModifierMask) {
case omp::OMPScheduleType::BaseDynamicChunked:
case omp::OMPScheduleType::BaseGuidedChunked:
ChunkSize = 7;
break;
case omp::OMPScheduleType::BaseAuto:
case omp::OMPScheduleType::BaseRuntime:
ChunkSize = 1;
break;
default:
assert(0 && "unknown type for this test");
break;
}
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
Value *ChunkVal =
(ChunkSize == 1) ? nullptr : ConstantInt::get(LCTy, ChunkSize);
auto LoopBodyGen = [&](InsertPointTy, llvm::Value *) {
return Error::success();
};
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, CLI,
OMPBuilder.createCanonicalLoop(
Loc, LoopBodyGen, StartVal, StopVal, StepVal,
/*IsSigned=*/false, /*InclusiveStop=*/false));
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
InsertPointTy AllocaIP = Builder.saveIP();
// Collect all the info from CLI, as it isn't usable after the call to
// createDynamicWorkshareLoop.
InsertPointTy AfterIP = CLI->getAfterIP();
BasicBlock *Preheader = CLI->getPreheader();
BasicBlock *ExitBlock = CLI->getExit();
BasicBlock *LatchBlock = CLI->getLatch();
Value *IV = CLI->getIndVar();
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, EndIP,
OMPBuilder.applyWorkshareLoop(
DL, CLI, AllocaIP, /*NeedsBarrier=*/true, getSchedKind(SchedType),
ChunkVal, /*Simd=*/false,
(SchedType & omp::OMPScheduleType::ModifierMonotonic) ==
omp::OMPScheduleType::ModifierMonotonic,
(SchedType & omp::OMPScheduleType::ModifierNonmonotonic) ==
omp::OMPScheduleType::ModifierNonmonotonic,
/*Ordered=*/false));
// The returned value should be the "after" point.
ASSERT_EQ(EndIP.getBlock(), AfterIP.getBlock());
ASSERT_EQ(EndIP.getPoint(), AfterIP.getPoint());
auto AllocaIter = BB->begin();
ASSERT_GE(std::distance(BB->begin(), BB->end()), 4);
AllocaInst *PLastIter = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PLowerBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PUpperBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PStride = dyn_cast<AllocaInst>(&*(AllocaIter++));
EXPECT_NE(PLastIter, nullptr);
EXPECT_NE(PLowerBound, nullptr);
EXPECT_NE(PUpperBound, nullptr);
EXPECT_NE(PStride, nullptr);
auto PreheaderIter = Preheader->begin();
ASSERT_GE(std::distance(Preheader->begin(), Preheader->end()), 6);
StoreInst *LowerBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *UpperBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *StrideStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
ASSERT_NE(LowerBoundStore, nullptr);
ASSERT_NE(UpperBoundStore, nullptr);
ASSERT_NE(StrideStore, nullptr);
CallInst *ThreadIdCall = dyn_cast<CallInst>(&*(PreheaderIter++));
ASSERT_NE(ThreadIdCall, nullptr);
EXPECT_EQ(ThreadIdCall->getCalledFunction()->getName(),
"__kmpc_global_thread_num");
CallInst *InitCall = dyn_cast<CallInst>(&*PreheaderIter);
ASSERT_NE(InitCall, nullptr);
EXPECT_EQ(InitCall->getCalledFunction()->getName(),
"__kmpc_dispatch_init_4u");
EXPECT_EQ(InitCall->arg_size(), 7U);
EXPECT_EQ(InitCall->getArgOperand(6), ConstantInt::get(LCTy, ChunkSize));
ConstantInt *SchedVal = cast<ConstantInt>(InitCall->getArgOperand(2));
if ((SchedType & OMPScheduleType::MonotonicityMask) ==
OMPScheduleType::None) {
// Implementation is allowed to add default nonmonotonicity flag
EXPECT_EQ(
static_cast<OMPScheduleType>(SchedVal->getValue().getZExtValue()) |
OMPScheduleType::ModifierNonmonotonic,
SchedType | OMPScheduleType::ModifierNonmonotonic);
} else {
EXPECT_EQ(static_cast<OMPScheduleType>(SchedVal->getValue().getZExtValue()),
SchedType);
}
ConstantInt *OrigLowerBound =
dyn_cast<ConstantInt>(LowerBoundStore->getValueOperand());
ConstantInt *OrigUpperBound =
dyn_cast<ConstantInt>(UpperBoundStore->getValueOperand());
ConstantInt *OrigStride =
dyn_cast<ConstantInt>(StrideStore->getValueOperand());
ASSERT_NE(OrigLowerBound, nullptr);
ASSERT_NE(OrigUpperBound, nullptr);
ASSERT_NE(OrigStride, nullptr);
EXPECT_EQ(OrigLowerBound->getValue(), 1);
EXPECT_EQ(OrigUpperBound->getValue(), 21);
EXPECT_EQ(OrigStride->getValue(), 1);
CallInst *FiniCall =
dyn_cast<CallInst>(&*(LatchBlock->getTerminator()->getPrevNode()));
EXPECT_EQ(FiniCall, nullptr);
// The original loop iterator should only be used in the condition, in the
// increment and in the statement that adds the lower bound to it.
EXPECT_EQ(std::distance(IV->use_begin(), IV->use_end()), 3);
// The exit block should contain the barrier call, plus the call to obtain
// the thread ID.
size_t NumCallsInExitBlock =
count_if(*ExitBlock, [](Instruction &I) { return isa<CallInst>(I); });
EXPECT_EQ(NumCallsInExitBlock, 2u);
// Add a termination to our block and check that it is internally consistent.
Builder.restoreIP(EndIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
INSTANTIATE_TEST_SUITE_P(
OpenMPWSLoopSchedulingTypes, OpenMPIRBuilderTestWithParams,
::testing::Values(omp::OMPScheduleType::UnorderedDynamicChunked,
omp::OMPScheduleType::UnorderedGuidedChunked,
omp::OMPScheduleType::UnorderedAuto,
omp::OMPScheduleType::UnorderedRuntime,
omp::OMPScheduleType::UnorderedDynamicChunked |
omp::OMPScheduleType::ModifierMonotonic,
omp::OMPScheduleType::UnorderedDynamicChunked |
omp::OMPScheduleType::ModifierNonmonotonic,
omp::OMPScheduleType::UnorderedGuidedChunked |
omp::OMPScheduleType::ModifierMonotonic,
omp::OMPScheduleType::UnorderedGuidedChunked |
omp::OMPScheduleType::ModifierNonmonotonic,
omp::OMPScheduleType::UnorderedAuto |
omp::OMPScheduleType::ModifierMonotonic,
omp::OMPScheduleType::UnorderedRuntime |
omp::OMPScheduleType::ModifierMonotonic));
TEST_F(OpenMPIRBuilderTest, DynamicWorkShareLoopOrdered) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
uint32_t ChunkSize = 1;
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
Value *ChunkVal = ConstantInt::get(LCTy, ChunkSize);
auto LoopBodyGen = [&](InsertPointTy, llvm::Value *) {
return llvm::Error::success();
};
ASSERT_EXPECTED_INIT(CanonicalLoopInfo *, CLI,
OMPBuilder.createCanonicalLoop(
Loc, LoopBodyGen, StartVal, StopVal, StepVal,
/*IsSigned=*/false, /*InclusiveStop=*/false));
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
InsertPointTy AllocaIP = Builder.saveIP();
// Collect all the info from CLI, as it isn't usable after the call to
// createDynamicWorkshareLoop.
BasicBlock *Preheader = CLI->getPreheader();
BasicBlock *ExitBlock = CLI->getExit();
BasicBlock *LatchBlock = CLI->getLatch();
Value *IV = CLI->getIndVar();
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, EndIP,
OMPBuilder.applyWorkshareLoop(DL, CLI, AllocaIP, /*NeedsBarrier=*/true,
OMP_SCHEDULE_Static, ChunkVal,
/*HasSimdModifier=*/false,
/*HasMonotonicModifier=*/false,
/*HasNonmonotonicModifier=*/false,
/*HasOrderedClause=*/true));
// Add a termination to our block and check that it is internally consistent.
Builder.restoreIP(EndIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *InitCall = nullptr;
for (Instruction &EI : *Preheader) {
Instruction *Cur = &EI;
if (isa<CallInst>(Cur)) {
InitCall = cast<CallInst>(Cur);
if (InitCall->getCalledFunction()->getName() == "__kmpc_dispatch_init_4u")
break;
InitCall = nullptr;
}
}
EXPECT_NE(InitCall, nullptr);
EXPECT_EQ(InitCall->arg_size(), 7U);
ConstantInt *SchedVal = cast<ConstantInt>(InitCall->getArgOperand(2));
EXPECT_EQ(SchedVal->getValue(),
static_cast<uint64_t>(OMPScheduleType::OrderedStaticChunked));
CallInst *FiniCall =
dyn_cast<CallInst>(&*(LatchBlock->getTerminator()->getPrevNode()));
ASSERT_NE(FiniCall, nullptr);
EXPECT_EQ(FiniCall->getCalledFunction()->getName(),
"__kmpc_dispatch_fini_4u");
EXPECT_EQ(FiniCall->arg_size(), 2U);
EXPECT_EQ(InitCall->getArgOperand(0), FiniCall->getArgOperand(0));
EXPECT_EQ(InitCall->getArgOperand(1), FiniCall->getArgOperand(1));
// The original loop iterator should only be used in the condition, in the
// increment and in the statement that adds the lower bound to it.
EXPECT_EQ(std::distance(IV->use_begin(), IV->use_end()), 3);
// The exit block should contain the barrier call, plus the call to obtain
// the thread ID.
size_t NumCallsInExitBlock =
count_if(*ExitBlock, [](Instruction &I) { return isa<CallInst>(I); });
EXPECT_EQ(NumCallsInExitBlock, 2u);
}
TEST_F(OpenMPIRBuilderTest, MasterDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
if (AllocIP.isSet())
Builder.restoreIP(AllocIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createMaster(Builder,
BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB)));
Builder.restoreIP(AfterIP);
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *MasterEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(MasterEntryCI->arg_size(), 2U);
EXPECT_EQ(MasterEntryCI->getCalledFunction()->getName(), "__kmpc_master");
EXPECT_TRUE(isa<GlobalVariable>(MasterEntryCI->getArgOperand(0)));
CallInst *MasterEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
MasterEndCI = cast<CallInst>(cur);
if (MasterEndCI->getCalledFunction()->getName() == "__kmpc_end_master")
break;
MasterEndCI = nullptr;
}
}
EXPECT_NE(MasterEndCI, nullptr);
EXPECT_EQ(MasterEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(MasterEndCI->getArgOperand(0)));
EXPECT_EQ(MasterEndCI->getArgOperand(1), MasterEntryCI->getArgOperand(1));
}
TEST_F(OpenMPIRBuilderTest, MaskedDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
if (AllocIP.isSet())
Builder.restoreIP(AllocIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
Constant *Filter = ConstantInt::get(Type::getInt32Ty(M->getContext()), 0);
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createMasked(Builder,
BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB), Filter));
Builder.restoreIP(AfterIP);
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *MaskedEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(MaskedEntryCI->arg_size(), 3U);
EXPECT_EQ(MaskedEntryCI->getCalledFunction()->getName(), "__kmpc_masked");
EXPECT_TRUE(isa<GlobalVariable>(MaskedEntryCI->getArgOperand(0)));
CallInst *MaskedEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
MaskedEndCI = cast<CallInst>(cur);
if (MaskedEndCI->getCalledFunction()->getName() == "__kmpc_end_masked")
break;
MaskedEndCI = nullptr;
}
}
EXPECT_NE(MaskedEndCI, nullptr);
EXPECT_EQ(MaskedEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(MaskedEndCI->getArgOperand(0)));
EXPECT_EQ(MaskedEndCI->getArgOperand(1), MaskedEntryCI->getArgOperand(1));
}
TEST_F(OpenMPIRBuilderTest, CriticalDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
// actual start for bodyCB
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
// body begin
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
BasicBlock *EntryBB = Builder.GetInsertBlock();
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createCritical(Builder, BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB), "testCRT", nullptr));
Builder.restoreIP(AfterIP);
CallInst *CriticalEntryCI = nullptr;
for (auto &EI : *EntryBB) {
Instruction *cur = &EI;
if (isa<CallInst>(cur)) {
CriticalEntryCI = cast<CallInst>(cur);
if (CriticalEntryCI->getCalledFunction()->getName() == "__kmpc_critical")
break;
CriticalEntryCI = nullptr;
}
}
EXPECT_NE(CriticalEntryCI, nullptr);
EXPECT_EQ(CriticalEntryCI->arg_size(), 3U);
EXPECT_EQ(CriticalEntryCI->getCalledFunction()->getName(), "__kmpc_critical");
EXPECT_TRUE(isa<GlobalVariable>(CriticalEntryCI->getArgOperand(0)));
CallInst *CriticalEndCI = nullptr;
for (auto &FI : *EntryBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
CriticalEndCI = cast<CallInst>(cur);
if (CriticalEndCI->getCalledFunction()->getName() ==
"__kmpc_end_critical")
break;
CriticalEndCI = nullptr;
}
}
EXPECT_NE(CriticalEndCI, nullptr);
EXPECT_EQ(CriticalEndCI->arg_size(), 3U);
EXPECT_TRUE(isa<GlobalVariable>(CriticalEndCI->getArgOperand(0)));
EXPECT_EQ(CriticalEndCI->getArgOperand(1), CriticalEntryCI->getArgOperand(1));
PointerType *CriticalNamePtrTy = PointerType::getUnqual(Ctx);
EXPECT_EQ(CriticalEndCI->getArgOperand(2), CriticalEntryCI->getArgOperand(2));
GlobalVariable *GV =
dyn_cast<GlobalVariable>(CriticalEndCI->getArgOperand(2));
ASSERT_NE(GV, nullptr);
EXPECT_EQ(GV->getType(), CriticalNamePtrTy);
const DataLayout &DL = M->getDataLayout();
const llvm::Align TypeAlign = DL.getABITypeAlign(CriticalNamePtrTy);
const llvm::Align PtrAlign = DL.getPointerABIAlignment(GV->getAddressSpace());
if (const llvm::MaybeAlign Alignment = GV->getAlign())
EXPECT_EQ(*Alignment, std::max(TypeAlign, PtrAlign));
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveDependSource) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
LLVMContext &Ctx = M->getContext();
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
InsertPointTy AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
unsigned NumLoops = 2;
SmallVector<Value *, 2> StoreValues;
Type *LCTy = Type::getInt64Ty(Ctx);
StoreValues.emplace_back(ConstantInt::get(LCTy, 1));
StoreValues.emplace_back(ConstantInt::get(LCTy, 2));
// Test for "#omp ordered depend(source)"
Builder.restoreIP(OMPBuilder.createOrderedDepend(Builder, AllocaIP, NumLoops,
StoreValues, ".cnt.addr",
/*IsDependSource=*/true));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
AllocaInst *AllocInst = dyn_cast<AllocaInst>(&BB->front());
ASSERT_NE(AllocInst, nullptr);
ArrayType *ArrType = dyn_cast<ArrayType>(AllocInst->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), NumLoops);
EXPECT_TRUE(
AllocInst->getAllocatedType()->getArrayElementType()->isIntegerTy(64));
Instruction *IterInst = dyn_cast<Instruction>(AllocInst);
for (unsigned Iter = 0; Iter < NumLoops; Iter++) {
GetElementPtrInst *DependAddrGEPIter =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependAddrGEPIter, nullptr);
EXPECT_EQ(DependAddrGEPIter->getPointerOperand(), AllocInst);
EXPECT_EQ(DependAddrGEPIter->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), Iter);
StoreInst *StoreValue =
dyn_cast<StoreInst>(DependAddrGEPIter->getNextNode());
ASSERT_NE(StoreValue, nullptr);
EXPECT_EQ(StoreValue->getValueOperand(), StoreValues[Iter]);
EXPECT_EQ(StoreValue->getPointerOperand(), DependAddrGEPIter);
EXPECT_EQ(StoreValue->getAlign(), Align(8));
IterInst = dyn_cast<Instruction>(StoreValue);
}
GetElementPtrInst *DependBaseAddrGEP =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependBaseAddrGEP, nullptr);
EXPECT_EQ(DependBaseAddrGEP->getPointerOperand(), AllocInst);
EXPECT_EQ(DependBaseAddrGEP->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), 0);
CallInst *GTID = dyn_cast<CallInst>(DependBaseAddrGEP->getNextNode());
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Depend = dyn_cast<CallInst>(GTID->getNextNode());
ASSERT_NE(Depend, nullptr);
EXPECT_EQ(Depend->arg_size(), 3U);
EXPECT_EQ(Depend->getCalledFunction()->getName(), "__kmpc_doacross_post");
EXPECT_TRUE(isa<GlobalVariable>(Depend->getArgOperand(0)));
EXPECT_EQ(Depend->getArgOperand(1), GTID);
EXPECT_EQ(Depend->getArgOperand(2), DependBaseAddrGEP);
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveDependSink) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
LLVMContext &Ctx = M->getContext();
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
InsertPointTy AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
unsigned NumLoops = 2;
SmallVector<Value *, 2> StoreValues;
Type *LCTy = Type::getInt64Ty(Ctx);
StoreValues.emplace_back(ConstantInt::get(LCTy, 1));
StoreValues.emplace_back(ConstantInt::get(LCTy, 2));
// Test for "#omp ordered depend(sink: vec)"
Builder.restoreIP(OMPBuilder.createOrderedDepend(Builder, AllocaIP, NumLoops,
StoreValues, ".cnt.addr",
/*IsDependSource=*/false));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
AllocaInst *AllocInst = dyn_cast<AllocaInst>(&BB->front());
ASSERT_NE(AllocInst, nullptr);
ArrayType *ArrType = dyn_cast<ArrayType>(AllocInst->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), NumLoops);
EXPECT_TRUE(
AllocInst->getAllocatedType()->getArrayElementType()->isIntegerTy(64));
Instruction *IterInst = dyn_cast<Instruction>(AllocInst);
for (unsigned Iter = 0; Iter < NumLoops; Iter++) {
GetElementPtrInst *DependAddrGEPIter =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependAddrGEPIter, nullptr);
EXPECT_EQ(DependAddrGEPIter->getPointerOperand(), AllocInst);
EXPECT_EQ(DependAddrGEPIter->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), Iter);
StoreInst *StoreValue =
dyn_cast<StoreInst>(DependAddrGEPIter->getNextNode());
ASSERT_NE(StoreValue, nullptr);
EXPECT_EQ(StoreValue->getValueOperand(), StoreValues[Iter]);
EXPECT_EQ(StoreValue->getPointerOperand(), DependAddrGEPIter);
EXPECT_EQ(StoreValue->getAlign(), Align(8));
IterInst = dyn_cast<Instruction>(StoreValue);
}
GetElementPtrInst *DependBaseAddrGEP =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependBaseAddrGEP, nullptr);
EXPECT_EQ(DependBaseAddrGEP->getPointerOperand(), AllocInst);
EXPECT_EQ(DependBaseAddrGEP->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), 0);
CallInst *GTID = dyn_cast<CallInst>(DependBaseAddrGEP->getNextNode());
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Depend = dyn_cast<CallInst>(GTID->getNextNode());
ASSERT_NE(Depend, nullptr);
EXPECT_EQ(Depend->arg_size(), 3U);
EXPECT_EQ(Depend->getCalledFunction()->getName(), "__kmpc_doacross_wait");
EXPECT_TRUE(isa<GlobalVariable>(Depend->getArgOperand(0)));
EXPECT_EQ(Depend->getArgOperand(1), GTID);
EXPECT_EQ(Depend->getArgOperand(2), DependBaseAddrGEP);
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveThreads) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI =
Builder.CreateAlloca(F->arg_begin()->getType(), nullptr, "priv.inst");
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
// Test for "#omp ordered [threads]"
BasicBlock *EntryBB = Builder.GetInsertBlock();
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createOrderedThreadsSimd(Builder, BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB), true));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(EntryBB->getTerminator(), nullptr);
CallInst *OrderedEntryCI = nullptr;
for (auto &EI : *EntryBB) {
Instruction *Cur = &EI;
if (isa<CallInst>(Cur)) {
OrderedEntryCI = cast<CallInst>(Cur);
if (OrderedEntryCI->getCalledFunction()->getName() == "__kmpc_ordered")
break;
OrderedEntryCI = nullptr;
}
}
EXPECT_NE(OrderedEntryCI, nullptr);
EXPECT_EQ(OrderedEntryCI->arg_size(), 2U);
EXPECT_EQ(OrderedEntryCI->getCalledFunction()->getName(), "__kmpc_ordered");
EXPECT_TRUE(isa<GlobalVariable>(OrderedEntryCI->getArgOperand(0)));
CallInst *OrderedEndCI = nullptr;
for (auto &FI : *EntryBB) {
Instruction *Cur = &FI;
if (isa<CallInst>(Cur)) {
OrderedEndCI = cast<CallInst>(Cur);
if (OrderedEndCI->getCalledFunction()->getName() == "__kmpc_end_ordered")
break;
OrderedEndCI = nullptr;
}
}
EXPECT_NE(OrderedEndCI, nullptr);
EXPECT_EQ(OrderedEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(OrderedEndCI->getArgOperand(0)));
EXPECT_EQ(OrderedEndCI->getArgOperand(1), OrderedEntryCI->getArgOperand(1));
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveSimd) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI =
Builder.CreateAlloca(F->arg_begin()->getType(), nullptr, "priv.inst");
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
// Test for "#omp ordered simd"
BasicBlock *EntryBB = Builder.GetInsertBlock();
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createOrderedThreadsSimd(Builder, BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB), false));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(EntryBB->getTerminator(), nullptr);
CallInst *OrderedEntryCI = nullptr;
for (auto &EI : *EntryBB) {
Instruction *Cur = &EI;
if (isa<CallInst>(Cur)) {
OrderedEntryCI = cast<CallInst>(Cur);
if (OrderedEntryCI->getCalledFunction()->getName() == "__kmpc_ordered")
break;
OrderedEntryCI = nullptr;
}
}
EXPECT_EQ(OrderedEntryCI, nullptr);
CallInst *OrderedEndCI = nullptr;
for (auto &FI : *EntryBB) {
Instruction *Cur = &FI;
if (isa<CallInst>(Cur)) {
OrderedEndCI = cast<CallInst>(Cur);
if (OrderedEndCI->getCalledFunction()->getName() == "__kmpc_end_ordered")
break;
OrderedEndCI = nullptr;
}
}
EXPECT_EQ(OrderedEndCI, nullptr);
}
TEST_F(OpenMPIRBuilderTest, CopyinBlocks) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IntegerType *Int32 = Type::getInt32Ty(M->getContext());
AllocaInst *MasterAddress = Builder.CreateAlloca(Builder.getPtrTy());
AllocaInst *PrivAddress = Builder.CreateAlloca(Builder.getPtrTy());
BasicBlock *EntryBB = BB;
OMPBuilder.createCopyinClauseBlocks(Builder.saveIP(), MasterAddress,
PrivAddress, Int32, /*BranchtoEnd*/ true);
BranchInst *EntryBr = dyn_cast_or_null<BranchInst>(EntryBB->getTerminator());
EXPECT_NE(EntryBr, nullptr);
EXPECT_TRUE(EntryBr->isConditional());
BasicBlock *NotMasterBB = EntryBr->getSuccessor(0);
BasicBlock *CopyinEnd = EntryBr->getSuccessor(1);
CmpInst *CMP = dyn_cast_or_null<CmpInst>(EntryBr->getCondition());
EXPECT_NE(CMP, nullptr);
EXPECT_NE(NotMasterBB, nullptr);
EXPECT_NE(CopyinEnd, nullptr);
BranchInst *NotMasterBr =
dyn_cast_or_null<BranchInst>(NotMasterBB->getTerminator());
EXPECT_NE(NotMasterBr, nullptr);
EXPECT_FALSE(NotMasterBr->isConditional());
EXPECT_EQ(CopyinEnd, NotMasterBr->getSuccessor(0));
}
TEST_F(OpenMPIRBuilderTest, SingleDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
if (AllocIP.isSet())
Builder.restoreIP(AllocIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createSingle(Builder, BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB), /*IsNowait*/ false));
Builder.restoreIP(AfterIP);
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *SingleEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(SingleEntryCI->arg_size(), 2U);
EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
CallInst *SingleEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
SingleEndCI = cast<CallInst>(cur);
if (SingleEndCI->getCalledFunction()->getName() == "__kmpc_end_single")
break;
SingleEndCI = nullptr;
}
}
EXPECT_NE(SingleEndCI, nullptr);
EXPECT_EQ(SingleEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
bool FoundBarrier = false;
for (auto &FI : *ExitBB) {
Instruction *cur = &FI;
if (auto CI = dyn_cast<CallInst>(cur)) {
if (CI->getCalledFunction()->getName() == "__kmpc_barrier") {
FoundBarrier = true;
break;
}
}
}
EXPECT_TRUE(FoundBarrier);
}
TEST_F(OpenMPIRBuilderTest, SingleDirectiveNowait) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
if (AllocIP.isSet())
Builder.restoreIP(AllocIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createSingle(Builder, BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB), /*IsNowait*/ true));
Builder.restoreIP(AfterIP);
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *SingleEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(SingleEntryCI->arg_size(), 2U);
EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
CallInst *SingleEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
SingleEndCI = cast<CallInst>(cur);
if (SingleEndCI->getCalledFunction()->getName() == "__kmpc_end_single")
break;
SingleEndCI = nullptr;
}
}
EXPECT_NE(SingleEndCI, nullptr);
EXPECT_EQ(SingleEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
CallInst *ExitBarrier = nullptr;
for (auto &FI : *ExitBB) {
Instruction *cur = &FI;
if (auto CI = dyn_cast<CallInst>(cur)) {
if (CI->getCalledFunction()->getName() == "__kmpc_barrier") {
ExitBarrier = CI;
break;
}
}
}
EXPECT_EQ(ExitBarrier, nullptr);
}
// Helper class to check each instruction of a BB.
class BBInstIter {
BasicBlock *BB;
BasicBlock::iterator BBI;
public:
BBInstIter(BasicBlock *BB) : BB(BB), BBI(BB->begin()) {}
bool hasNext() const { return BBI != BB->end(); }
template <typename InstTy> InstTy *next() {
if (!hasNext())
return nullptr;
Instruction *Cur = &*BBI++;
if (!isa<InstTy>(Cur))
return nullptr;
return cast<InstTy>(Cur);
}
};
TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
Value *CPVar = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), CPVar);
FunctionType *CopyFuncTy = FunctionType::get(
Builder.getVoidTy(), {Builder.getPtrTy(), Builder.getPtrTy()}, false);
Function *CopyFunc =
Function::Create(CopyFuncTy, Function::PrivateLinkage, "copy_var", *M);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
if (AllocIP.isSet())
Builder.restoreIP(AllocIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
// IP must be before the unconditional branch to ExitBB
EXPECT_NE(IPBB->end(), IP.getPoint());
};
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createSingle(Builder, BODYGENCB_WRAPPER(BodyGenCB),
FINICB_WRAPPER(FiniCB),
/*IsNowait*/ false, {CPVar}, {CopyFunc}));
Builder.restoreIP(AfterIP);
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *SingleEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(SingleEntryCI->arg_size(), 2U);
EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
// check ThenBB
BBInstIter ThenBBI(ThenBB);
// load PrivAI
auto *PrivLI = ThenBBI.next<LoadInst>();
EXPECT_NE(PrivLI, nullptr);
EXPECT_EQ(PrivLI->getPointerOperand(), PrivAI);
// icmp
EXPECT_TRUE(ThenBBI.next<ICmpInst>());
// store 1, DidIt
auto *DidItSI = ThenBBI.next<StoreInst>();
EXPECT_NE(DidItSI, nullptr);
EXPECT_EQ(DidItSI->getValueOperand(),
ConstantInt::get(Type::getInt32Ty(Ctx), 1));
Value *DidIt = DidItSI->getPointerOperand();
// call __kmpc_end_single
auto *SingleEndCI = ThenBBI.next<CallInst>();
EXPECT_NE(SingleEndCI, nullptr);
EXPECT_EQ(SingleEndCI->getCalledFunction()->getName(), "__kmpc_end_single");
EXPECT_EQ(SingleEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
// br ExitBB
auto *ExitBBBI = ThenBBI.next<BranchInst>();
EXPECT_NE(ExitBBBI, nullptr);
EXPECT_TRUE(ExitBBBI->isUnconditional());
EXPECT_EQ(ExitBBBI->getOperand(0), ExitBB);
EXPECT_FALSE(ThenBBI.hasNext());
// check ExitBB
BBInstIter ExitBBI(ExitBB);
// call __kmpc_global_thread_num
auto *ThreadNumCI = ExitBBI.next<CallInst>();
EXPECT_NE(ThreadNumCI, nullptr);
EXPECT_EQ(ThreadNumCI->getCalledFunction()->getName(),
"__kmpc_global_thread_num");
// load DidIt
auto *DidItLI = ExitBBI.next<LoadInst>();
EXPECT_NE(DidItLI, nullptr);
EXPECT_EQ(DidItLI->getPointerOperand(), DidIt);
// call __kmpc_copyprivate
auto *CopyPrivateCI = ExitBBI.next<CallInst>();
EXPECT_NE(CopyPrivateCI, nullptr);
EXPECT_EQ(CopyPrivateCI->arg_size(), 6U);
EXPECT_TRUE(isa<AllocaInst>(CopyPrivateCI->getArgOperand(3)));
EXPECT_EQ(CopyPrivateCI->getArgOperand(3), CPVar);
EXPECT_TRUE(isa<Function>(CopyPrivateCI->getArgOperand(4)));
EXPECT_EQ(CopyPrivateCI->getArgOperand(4), CopyFunc);
EXPECT_TRUE(isa<LoadInst>(CopyPrivateCI->getArgOperand(5)));
DidItLI = cast<LoadInst>(CopyPrivateCI->getArgOperand(5));
EXPECT_EQ(DidItLI->getOperand(0), DidIt);
EXPECT_FALSE(ExitBBI.hasNext());
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicReadFlt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Type *Float32 = Type::getFloatTy(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(Float32);
XVal->setName("AtomicVar");
AllocaInst *VVal = Builder.CreateAlloca(Float32);
VVal->setName("AtomicRead");
AtomicOrdering AO = AtomicOrdering::Monotonic;
OpenMPIRBuilder::AtomicOpValue X = {XVal, Float32, false, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Float32, false, false};
Builder.restoreIP(OMPBuilder.createAtomicRead(Loc, X, V, AO, AllocaIP));
IntegerType *IntCastTy =
IntegerType::get(M->getContext(), Float32->getScalarSizeInBits());
LoadInst *AtomicLoad = cast<LoadInst>(VVal->getNextNode());
EXPECT_TRUE(AtomicLoad->isAtomic());
EXPECT_EQ(AtomicLoad->getPointerOperand(), XVal);
BitCastInst *CastToFlt = cast<BitCastInst>(AtomicLoad->getNextNode());
EXPECT_EQ(CastToFlt->getSrcTy(), IntCastTy);
EXPECT_EQ(CastToFlt->getDestTy(), Float32);
EXPECT_EQ(CastToFlt->getOperand(0), AtomicLoad);
StoreInst *StoreofAtomic = cast<StoreInst>(CastToFlt->getNextNode());
EXPECT_EQ(StoreofAtomic->getValueOperand(), CastToFlt);
EXPECT_EQ(StoreofAtomic->getPointerOperand(), VVal);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicReadInt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
IntegerType *Int32 = Type::getInt32Ty(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
AllocaInst *VVal = Builder.CreateAlloca(Int32);
VVal->setName("AtomicRead");
AtomicOrdering AO = AtomicOrdering::Monotonic;
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Int32, false, false};
Builder.restoreIP(OMPBuilder.createAtomicRead(Loc, X, V, AO, AllocaIP));
LoadInst *AtomicLoad = nullptr;
StoreInst *StoreofAtomic = nullptr;
for (Instruction &Cur : *EntryBB) {
if (isa<LoadInst>(Cur)) {
AtomicLoad = cast<LoadInst>(&Cur);
if (AtomicLoad->getPointerOperand() == XVal)
continue;
AtomicLoad = nullptr;
} else if (isa<StoreInst>(Cur)) {
StoreofAtomic = cast<StoreInst>(&Cur);
if (StoreofAtomic->getPointerOperand() == VVal)
continue;
StoreofAtomic = nullptr;
}
}
EXPECT_NE(AtomicLoad, nullptr);
EXPECT_TRUE(AtomicLoad->isAtomic());
EXPECT_NE(StoreofAtomic, nullptr);
EXPECT_EQ(StoreofAtomic->getValueOperand(), AtomicLoad);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicWriteFlt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
LLVMContext &Ctx = M->getContext();
Type *Float32 = Type::getFloatTy(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Float32);
XVal->setName("AtomicVar");
OpenMPIRBuilder::AtomicOpValue X = {XVal, Float32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
Constant *ValToWrite = ConstantFP::get(Float32, 1.0);
Builder.restoreIP(
OMPBuilder.createAtomicWrite(Loc, X, ValToWrite, AO, AllocaIP));
IntegerType *IntCastTy =
IntegerType::get(M->getContext(), Float32->getScalarSizeInBits());
Value *ExprCast = Builder.CreateBitCast(ValToWrite, IntCastTy);
StoreInst *StoreofAtomic = cast<StoreInst>(XVal->getNextNode());
EXPECT_EQ(StoreofAtomic->getValueOperand(), ExprCast);
EXPECT_EQ(StoreofAtomic->getPointerOperand(), XVal);
EXPECT_TRUE(StoreofAtomic->isAtomic());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicWriteInt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *ValToWrite = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Builder.restoreIP(
OMPBuilder.createAtomicWrite(Loc, X, ValToWrite, AO, AllocaIP));
StoreInst *StoreofAtomic = nullptr;
for (Instruction &Cur : *EntryBB) {
if (isa<StoreInst>(Cur)) {
StoreofAtomic = cast<StoreInst>(&Cur);
if (StoreofAtomic->getPointerOperand() == XVal)
continue;
StoreofAtomic = nullptr;
}
}
EXPECT_NE(StoreofAtomic, nullptr);
EXPECT_TRUE(StoreofAtomic->isAtomic());
EXPECT_EQ(StoreofAtomic->getValueOperand(), ValToWrite);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicUpdate) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IntegerType *Int32 = Type::getInt32Ty(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *ConstVal = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
Value *Expr = nullptr;
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::Sub;
bool IsXLHSInRHSPart = false;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Value *Sub = nullptr;
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) {
Sub = IRB.CreateSub(ConstVal, Atomic);
return Sub;
};
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createAtomicUpdate(Builder, AllocaIP, X, Expr,
AO, RMWOp, UpdateOp,
IsXLHSInRHSPart));
Builder.restoreIP(AfterIP);
BasicBlock *ContBB = EntryBB->getSingleSuccessor();
BranchInst *ContTI = dyn_cast<BranchInst>(ContBB->getTerminator());
EXPECT_NE(ContTI, nullptr);
BasicBlock *EndBB = ContTI->getSuccessor(0);
EXPECT_TRUE(ContTI->isConditional());
EXPECT_EQ(ContTI->getSuccessor(1), ContBB);
EXPECT_NE(EndBB, nullptr);
PHINode *Phi = dyn_cast<PHINode>(&ContBB->front());
EXPECT_NE(Phi, nullptr);
EXPECT_EQ(Phi->getNumIncomingValues(), 2U);
EXPECT_EQ(Phi->getIncomingBlock(0), EntryBB);
EXPECT_EQ(Phi->getIncomingBlock(1), ContBB);
EXPECT_TRUE(Sub->hasOneUse());
StoreInst *St = dyn_cast<StoreInst>(Sub->user_back());
AllocaInst *UpdateTemp = dyn_cast<AllocaInst>(St->getPointerOperand());
ExtractValueInst *ExVI1 =
dyn_cast<ExtractValueInst>(Phi->getIncomingValueForBlock(ContBB));
EXPECT_NE(ExVI1, nullptr);
AtomicCmpXchgInst *CmpExchg =
dyn_cast<AtomicCmpXchgInst>(ExVI1->getAggregateOperand());
EXPECT_NE(CmpExchg, nullptr);
EXPECT_EQ(CmpExchg->getPointerOperand(), XVal);
EXPECT_EQ(CmpExchg->getCompareOperand(), Phi);
EXPECT_EQ(CmpExchg->getSuccessOrdering(), AtomicOrdering::Monotonic);
LoadInst *Ld = dyn_cast<LoadInst>(CmpExchg->getNewValOperand());
EXPECT_NE(Ld, nullptr);
EXPECT_EQ(UpdateTemp, Ld->getPointerOperand());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicUpdateFloat) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *FloatTy = Type::getFloatTy(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(FloatTy);
XVal->setName("AtomicVar");
Builder.CreateStore(ConstantFP::get(Type::getFloatTy(Ctx), 0.0), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, FloatTy, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
Constant *ConstVal = ConstantFP::get(Type::getFloatTy(Ctx), 1.0);
Value *Expr = nullptr;
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::FSub;
bool IsXLHSInRHSPart = false;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Value *Sub = nullptr;
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) {
Sub = IRB.CreateFSub(ConstVal, Atomic);
return Sub;
};
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createAtomicUpdate(Builder, AllocaIP, X, Expr,
AO, RMWOp, UpdateOp,
IsXLHSInRHSPart));
Builder.restoreIP(AfterIP);
BasicBlock *ContBB = EntryBB->getSingleSuccessor();
BranchInst *ContTI = dyn_cast<BranchInst>(ContBB->getTerminator());
EXPECT_NE(ContTI, nullptr);
BasicBlock *EndBB = ContTI->getSuccessor(0);
EXPECT_TRUE(ContTI->isConditional());
EXPECT_EQ(ContTI->getSuccessor(1), ContBB);
EXPECT_NE(EndBB, nullptr);
PHINode *Phi = dyn_cast<PHINode>(&ContBB->front());
EXPECT_NE(Phi, nullptr);
EXPECT_EQ(Phi->getNumIncomingValues(), 2U);
EXPECT_EQ(Phi->getIncomingBlock(0), EntryBB);
EXPECT_EQ(Phi->getIncomingBlock(1), ContBB);
EXPECT_TRUE(Sub->hasOneUse());
StoreInst *St = dyn_cast<StoreInst>(Sub->user_back());
AllocaInst *UpdateTemp = dyn_cast<AllocaInst>(St->getPointerOperand());
ExtractValueInst *ExVI1 =
dyn_cast<ExtractValueInst>(Phi->getIncomingValueForBlock(ContBB));
EXPECT_NE(ExVI1, nullptr);
AtomicCmpXchgInst *CmpExchg =
dyn_cast<AtomicCmpXchgInst>(ExVI1->getAggregateOperand());
EXPECT_NE(CmpExchg, nullptr);
EXPECT_EQ(CmpExchg->getPointerOperand(), XVal);
EXPECT_EQ(CmpExchg->getCompareOperand(), Phi);
EXPECT_EQ(CmpExchg->getSuccessOrdering(), AtomicOrdering::Monotonic);
LoadInst *Ld = dyn_cast<LoadInst>(CmpExchg->getNewValOperand());
EXPECT_NE(Ld, nullptr);
EXPECT_EQ(UpdateTemp, Ld->getPointerOperand());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicUpdateIntr) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *IntTy = Type::getInt32Ty(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(IntTy);
XVal->setName("AtomicVar");
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, IntTy, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
Constant *ConstVal = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
Value *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::UMax;
bool IsXLHSInRHSPart = false;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Value *Sub = nullptr;
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) {
Sub = IRB.CreateSub(ConstVal, Atomic);
return Sub;
};
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createAtomicUpdate(Builder, AllocaIP, X, Expr,
AO, RMWOp, UpdateOp,
IsXLHSInRHSPart));
Builder.restoreIP(AfterIP);
BasicBlock *ContBB = EntryBB->getSingleSuccessor();
BranchInst *ContTI = dyn_cast<BranchInst>(ContBB->getTerminator());
EXPECT_NE(ContTI, nullptr);
BasicBlock *EndBB = ContTI->getSuccessor(0);
EXPECT_TRUE(ContTI->isConditional());
EXPECT_EQ(ContTI->getSuccessor(1), ContBB);
EXPECT_NE(EndBB, nullptr);
PHINode *Phi = dyn_cast<PHINode>(&ContBB->front());
EXPECT_NE(Phi, nullptr);
EXPECT_EQ(Phi->getNumIncomingValues(), 2U);
EXPECT_EQ(Phi->getIncomingBlock(0), EntryBB);
EXPECT_EQ(Phi->getIncomingBlock(1), ContBB);
EXPECT_TRUE(Sub->hasOneUse());
StoreInst *St = dyn_cast<StoreInst>(Sub->user_back());
AllocaInst *UpdateTemp = dyn_cast<AllocaInst>(St->getPointerOperand());
ExtractValueInst *ExVI1 =
dyn_cast<ExtractValueInst>(Phi->getIncomingValueForBlock(ContBB));
EXPECT_NE(ExVI1, nullptr);
AtomicCmpXchgInst *CmpExchg =
dyn_cast<AtomicCmpXchgInst>(ExVI1->getAggregateOperand());
EXPECT_NE(CmpExchg, nullptr);
EXPECT_EQ(CmpExchg->getPointerOperand(), XVal);
EXPECT_EQ(CmpExchg->getCompareOperand(), Phi);
EXPECT_EQ(CmpExchg->getSuccessOrdering(), AtomicOrdering::Monotonic);
LoadInst *Ld = dyn_cast<LoadInst>(CmpExchg->getNewValOperand());
EXPECT_NE(Ld, nullptr);
EXPECT_EQ(UpdateTemp, Ld->getPointerOperand());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicCapture) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
AllocaInst *VVal = Builder.CreateAlloca(Int32);
VVal->setName("AtomicCapTar");
StoreInst *Init =
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Int32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::Add;
bool IsXLHSInRHSPart = true;
bool IsPostfixUpdate = true;
bool UpdateExpr = true;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
// integer update - not used
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) { return nullptr; };
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createAtomicCapture(
Builder, AllocaIP, X, V, Expr, AO, RMWOp, UpdateOp,
UpdateExpr, IsPostfixUpdate, IsXLHSInRHSPart));
Builder.restoreIP(AfterIP);
EXPECT_EQ(EntryBB->getParent()->size(), 1U);
AtomicRMWInst *ARWM = dyn_cast<AtomicRMWInst>(Init->getNextNode());
EXPECT_NE(ARWM, nullptr);
EXPECT_EQ(ARWM->getPointerOperand(), XVal);
EXPECT_EQ(ARWM->getOperation(), RMWOp);
StoreInst *St = dyn_cast<StoreInst>(ARWM->user_back());
EXPECT_NE(St, nullptr);
EXPECT_EQ(St->getPointerOperand(), VVal);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicCompare) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("x");
StoreInst *Init =
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue XSigned = {XVal, Int32, true, false};
OpenMPIRBuilder::AtomicOpValue XUnsigned = {XVal, Int32, false, false};
// V and R are not used in atomic compare
OpenMPIRBuilder::AtomicOpValue V = {nullptr, nullptr, false, false};
OpenMPIRBuilder::AtomicOpValue R = {nullptr, nullptr, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
ConstantInt *D = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
OMPAtomicCompareOp OpMax = OMPAtomicCompareOp::MAX;
OMPAtomicCompareOp OpEQ = OMPAtomicCompareOp::EQ;
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, XSigned, V, R, Expr, nullptr, AO, OpMax, true, false, false));
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, XUnsigned, V, R, Expr, nullptr, AO, OpMax, false, false, false));
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, XSigned, V, R, Expr, D, AO, OpEQ, true, false, false));
BasicBlock *EntryBB = BB;
EXPECT_EQ(EntryBB->getParent()->size(), 1U);
EXPECT_EQ(EntryBB->size(), 5U);
AtomicRMWInst *ARWM1 = dyn_cast<AtomicRMWInst>(Init->getNextNode());
EXPECT_NE(ARWM1, nullptr);
EXPECT_EQ(ARWM1->getPointerOperand(), XVal);
EXPECT_EQ(ARWM1->getValOperand(), Expr);
EXPECT_EQ(ARWM1->getOperation(), AtomicRMWInst::Min);
AtomicRMWInst *ARWM2 = dyn_cast<AtomicRMWInst>(ARWM1->getNextNode());
EXPECT_NE(ARWM2, nullptr);
EXPECT_EQ(ARWM2->getPointerOperand(), XVal);
EXPECT_EQ(ARWM2->getValOperand(), Expr);
EXPECT_EQ(ARWM2->getOperation(), AtomicRMWInst::UMax);
AtomicCmpXchgInst *AXCHG = dyn_cast<AtomicCmpXchgInst>(ARWM2->getNextNode());
EXPECT_NE(AXCHG, nullptr);
EXPECT_EQ(AXCHG->getPointerOperand(), XVal);
EXPECT_EQ(AXCHG->getCompareOperand(), Expr);
EXPECT_EQ(AXCHG->getNewValOperand(), D);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicCompareCapture) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("x");
AllocaInst *VVal = Builder.CreateAlloca(Int32);
VVal->setName("v");
AllocaInst *RVal = Builder.CreateAlloca(Int32);
RVal->setName("r");
StoreInst *Init =
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, true, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue NoV = {nullptr, nullptr, false, false};
OpenMPIRBuilder::AtomicOpValue R = {RVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue NoR = {nullptr, nullptr, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
ConstantInt *D = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
OMPAtomicCompareOp OpMax = OMPAtomicCompareOp::MAX;
OMPAtomicCompareOp OpEQ = OMPAtomicCompareOp::EQ;
// { cond-update-stmt v = x; }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ false));
// { v = x; cond-update-stmt }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ true,
/* IsFailOnly */ false));
// if(x == e) { x = d; } else { v = x; }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ true));
// { r = x == e; if(r) { x = d; } }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, NoV, R, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ false));
// { r = x == e; if(r) { x = d; } else { v = x; } }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, R, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ true));
// { v = x; cond-update-stmt }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, nullptr, AO, OpMax, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ true,
/* IsFailOnly */ false));
// { cond-update-stmt v = x; }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, nullptr, AO, OpMax, /* IsXBinopExpr */ false,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ false));
BasicBlock *EntryBB = BB;
EXPECT_EQ(EntryBB->getParent()->size(), 5U);
BasicBlock *Cont1 = dyn_cast<BasicBlock>(EntryBB->getNextNode());
EXPECT_NE(Cont1, nullptr);
BasicBlock *Exit1 = dyn_cast<BasicBlock>(Cont1->getNextNode());
EXPECT_NE(Exit1, nullptr);
BasicBlock *Cont2 = dyn_cast<BasicBlock>(Exit1->getNextNode());
EXPECT_NE(Cont2, nullptr);
BasicBlock *Exit2 = dyn_cast<BasicBlock>(Cont2->getNextNode());
EXPECT_NE(Exit2, nullptr);
AtomicCmpXchgInst *CmpXchg1 =
dyn_cast<AtomicCmpXchgInst>(Init->getNextNode());
EXPECT_NE(CmpXchg1, nullptr);
EXPECT_EQ(CmpXchg1->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg1->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg1->getNewValOperand(), D);
ExtractValueInst *ExtVal1 =
dyn_cast<ExtractValueInst>(CmpXchg1->getNextNode());
EXPECT_NE(ExtVal1, nullptr);
EXPECT_EQ(ExtVal1->getAggregateOperand(), CmpXchg1);
EXPECT_EQ(ExtVal1->getIndices(), ArrayRef<unsigned int>(0U));
ExtractValueInst *ExtVal2 =
dyn_cast<ExtractValueInst>(ExtVal1->getNextNode());
EXPECT_NE(ExtVal2, nullptr);
EXPECT_EQ(ExtVal2->getAggregateOperand(), CmpXchg1);
EXPECT_EQ(ExtVal2->getIndices(), ArrayRef<unsigned int>(1U));
SelectInst *Sel1 = dyn_cast<SelectInst>(ExtVal2->getNextNode());
EXPECT_NE(Sel1, nullptr);
EXPECT_EQ(Sel1->getCondition(), ExtVal2);
EXPECT_EQ(Sel1->getTrueValue(), Expr);
EXPECT_EQ(Sel1->getFalseValue(), ExtVal1);
StoreInst *Store1 = dyn_cast<StoreInst>(Sel1->getNextNode());
EXPECT_NE(Store1, nullptr);
EXPECT_EQ(Store1->getPointerOperand(), VVal);
EXPECT_EQ(Store1->getValueOperand(), Sel1);
AtomicCmpXchgInst *CmpXchg2 =
dyn_cast<AtomicCmpXchgInst>(Store1->getNextNode());
EXPECT_NE(CmpXchg2, nullptr);
EXPECT_EQ(CmpXchg2->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg2->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg2->getNewValOperand(), D);
ExtractValueInst *ExtVal3 =
dyn_cast<ExtractValueInst>(CmpXchg2->getNextNode());
EXPECT_NE(ExtVal3, nullptr);
EXPECT_EQ(ExtVal3->getAggregateOperand(), CmpXchg2);
EXPECT_EQ(ExtVal3->getIndices(), ArrayRef<unsigned int>(0U));
StoreInst *Store2 = dyn_cast<StoreInst>(ExtVal3->getNextNode());
EXPECT_NE(Store2, nullptr);
EXPECT_EQ(Store2->getPointerOperand(), VVal);
EXPECT_EQ(Store2->getValueOperand(), ExtVal3);
AtomicCmpXchgInst *CmpXchg3 =
dyn_cast<AtomicCmpXchgInst>(Store2->getNextNode());
EXPECT_NE(CmpXchg3, nullptr);
EXPECT_EQ(CmpXchg3->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg3->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg3->getNewValOperand(), D);
ExtractValueInst *ExtVal4 =
dyn_cast<ExtractValueInst>(CmpXchg3->getNextNode());
EXPECT_NE(ExtVal4, nullptr);
EXPECT_EQ(ExtVal4->getAggregateOperand(), CmpXchg3);
EXPECT_EQ(ExtVal4->getIndices(), ArrayRef<unsigned int>(0U));
ExtractValueInst *ExtVal5 =
dyn_cast<ExtractValueInst>(ExtVal4->getNextNode());
EXPECT_NE(ExtVal5, nullptr);
EXPECT_EQ(ExtVal5->getAggregateOperand(), CmpXchg3);
EXPECT_EQ(ExtVal5->getIndices(), ArrayRef<unsigned int>(1U));
BranchInst *Br1 = dyn_cast<BranchInst>(ExtVal5->getNextNode());
EXPECT_NE(Br1, nullptr);
EXPECT_EQ(Br1->isConditional(), true);
EXPECT_EQ(Br1->getCondition(), ExtVal5);
EXPECT_EQ(Br1->getSuccessor(0), Exit1);
EXPECT_EQ(Br1->getSuccessor(1), Cont1);
StoreInst *Store3 = dyn_cast<StoreInst>(&Cont1->front());
EXPECT_NE(Store3, nullptr);
EXPECT_EQ(Store3->getPointerOperand(), VVal);
EXPECT_EQ(Store3->getValueOperand(), ExtVal4);
BranchInst *Br2 = dyn_cast<BranchInst>(Store3->getNextNode());
EXPECT_NE(Br2, nullptr);
EXPECT_EQ(Br2->isUnconditional(), true);
EXPECT_EQ(Br2->getSuccessor(0), Exit1);
AtomicCmpXchgInst *CmpXchg4 = dyn_cast<AtomicCmpXchgInst>(&Exit1->front());
EXPECT_NE(CmpXchg4, nullptr);
EXPECT_EQ(CmpXchg4->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg4->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg4->getNewValOperand(), D);
ExtractValueInst *ExtVal6 =
dyn_cast<ExtractValueInst>(CmpXchg4->getNextNode());
EXPECT_NE(ExtVal6, nullptr);
EXPECT_EQ(ExtVal6->getAggregateOperand(), CmpXchg4);
EXPECT_EQ(ExtVal6->getIndices(), ArrayRef<unsigned int>(1U));
ZExtInst *ZExt1 = dyn_cast<ZExtInst>(ExtVal6->getNextNode());
EXPECT_NE(ZExt1, nullptr);
EXPECT_EQ(ZExt1->getDestTy(), Int32);
StoreInst *Store4 = dyn_cast<StoreInst>(ZExt1->getNextNode());
EXPECT_NE(Store4, nullptr);
EXPECT_EQ(Store4->getPointerOperand(), RVal);
EXPECT_EQ(Store4->getValueOperand(), ZExt1);
AtomicCmpXchgInst *CmpXchg5 =
dyn_cast<AtomicCmpXchgInst>(Store4->getNextNode());
EXPECT_NE(CmpXchg5, nullptr);
EXPECT_EQ(CmpXchg5->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg5->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg5->getNewValOperand(), D);
ExtractValueInst *ExtVal7 =
dyn_cast<ExtractValueInst>(CmpXchg5->getNextNode());
EXPECT_NE(ExtVal7, nullptr);
EXPECT_EQ(ExtVal7->getAggregateOperand(), CmpXchg5);
EXPECT_EQ(ExtVal7->getIndices(), ArrayRef<unsigned int>(0U));
ExtractValueInst *ExtVal8 =
dyn_cast<ExtractValueInst>(ExtVal7->getNextNode());
EXPECT_NE(ExtVal8, nullptr);
EXPECT_EQ(ExtVal8->getAggregateOperand(), CmpXchg5);
EXPECT_EQ(ExtVal8->getIndices(), ArrayRef<unsigned int>(1U));
BranchInst *Br3 = dyn_cast<BranchInst>(ExtVal8->getNextNode());
EXPECT_NE(Br3, nullptr);
EXPECT_EQ(Br3->isConditional(), true);
EXPECT_EQ(Br3->getCondition(), ExtVal8);
EXPECT_EQ(Br3->getSuccessor(0), Exit2);
EXPECT_EQ(Br3->getSuccessor(1), Cont2);
StoreInst *Store5 = dyn_cast<StoreInst>(&Cont2->front());
EXPECT_NE(Store5, nullptr);
EXPECT_EQ(Store5->getPointerOperand(), VVal);
EXPECT_EQ(Store5->getValueOperand(), ExtVal7);
BranchInst *Br4 = dyn_cast<BranchInst>(Store5->getNextNode());
EXPECT_NE(Br4, nullptr);
EXPECT_EQ(Br4->isUnconditional(), true);
EXPECT_EQ(Br4->getSuccessor(0), Exit2);
ExtractValueInst *ExtVal9 = dyn_cast<ExtractValueInst>(&Exit2->front());
EXPECT_NE(ExtVal9, nullptr);
EXPECT_EQ(ExtVal9->getAggregateOperand(), CmpXchg5);
EXPECT_EQ(ExtVal9->getIndices(), ArrayRef<unsigned int>(1U));
ZExtInst *ZExt2 = dyn_cast<ZExtInst>(ExtVal9->getNextNode());
EXPECT_NE(ZExt2, nullptr);
EXPECT_EQ(ZExt2->getDestTy(), Int32);
StoreInst *Store6 = dyn_cast<StoreInst>(ZExt2->getNextNode());
EXPECT_NE(Store6, nullptr);
EXPECT_EQ(Store6->getPointerOperand(), RVal);
EXPECT_EQ(Store6->getValueOperand(), ZExt2);
AtomicRMWInst *ARWM1 = dyn_cast<AtomicRMWInst>(Store6->getNextNode());
EXPECT_NE(ARWM1, nullptr);
EXPECT_EQ(ARWM1->getPointerOperand(), XVal);
EXPECT_EQ(ARWM1->getValOperand(), Expr);
EXPECT_EQ(ARWM1->getOperation(), AtomicRMWInst::Min);
StoreInst *Store7 = dyn_cast<StoreInst>(ARWM1->getNextNode());
EXPECT_NE(Store7, nullptr);
EXPECT_EQ(Store7->getPointerOperand(), VVal);
EXPECT_EQ(Store7->getValueOperand(), ARWM1);
AtomicRMWInst *ARWM2 = dyn_cast<AtomicRMWInst>(Store7->getNextNode());
EXPECT_NE(ARWM2, nullptr);
EXPECT_EQ(ARWM2->getPointerOperand(), XVal);
EXPECT_EQ(ARWM2->getValOperand(), Expr);
EXPECT_EQ(ARWM2->getOperation(), AtomicRMWInst::Max);
CmpInst *Cmp1 = dyn_cast<CmpInst>(ARWM2->getNextNode());
EXPECT_NE(Cmp1, nullptr);
EXPECT_EQ(Cmp1->getPredicate(), CmpInst::ICMP_SGT);
EXPECT_EQ(Cmp1->getOperand(0), ARWM2);
EXPECT_EQ(Cmp1->getOperand(1), Expr);
SelectInst *Sel2 = dyn_cast<SelectInst>(Cmp1->getNextNode());
EXPECT_NE(Sel2, nullptr);
EXPECT_EQ(Sel2->getCondition(), Cmp1);
EXPECT_EQ(Sel2->getTrueValue(), Expr);
EXPECT_EQ(Sel2->getFalseValue(), ARWM2);
StoreInst *Store8 = dyn_cast<StoreInst>(Sel2->getNextNode());
EXPECT_NE(Store8, nullptr);
EXPECT_EQ(Store8->getPointerOperand(), VVal);
EXPECT_EQ(Store8->getValueOperand(), Sel2);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateTeams) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
AllocaInst *ValPtr32 = Builder.CreateAlloca(Builder.getInt32Ty());
AllocaInst *ValPtr128 = Builder.CreateAlloca(Builder.getInt128Ty());
Value *Val128 = Builder.CreateLoad(Builder.getInt128Ty(), ValPtr128, "load");
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(AllocIP);
AllocaInst *Local128 = Builder.CreateAlloca(Builder.getInt128Ty(), nullptr,
"bodygen.alloca128");
Builder.restoreIP(CodeGenIP);
// Loading and storing captured pointer and values
Builder.CreateStore(Val128, Local128);
Value *Val32 = Builder.CreateLoad(ValPtr32->getAllocatedType(), ValPtr32,
"bodygen.load32");
LoadInst *PrivLoad128 = Builder.CreateLoad(
Local128->getAllocatedType(), Local128, "bodygen.local.load128");
Value *Cmp = Builder.CreateICmpNE(
Val32, Builder.CreateTrunc(PrivLoad128, Val32->getType()));
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
return Error::success();
};
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(Builder, BodyGenCB, /*NumTeamsLower=*/nullptr,
/*NumTeamsUpper=*/nullptr,
/*ThreadLimit=*/nullptr, /*IfExpr=*/nullptr));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *TeamsForkCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_fork_teams)
->user_back());
// Verify the Ident argument
GlobalVariable *Ident = cast<GlobalVariable>(TeamsForkCall->getArgOperand(0));
ASSERT_NE(Ident, nullptr);
EXPECT_TRUE(Ident->hasInitializer());
Constant *Initializer = Ident->getInitializer();
GlobalVariable *SrcStrGlob =
cast<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts());
ASSERT_NE(SrcStrGlob, nullptr);
ConstantDataArray *SrcSrc =
dyn_cast<ConstantDataArray>(SrcStrGlob->getInitializer());
ASSERT_NE(SrcSrc, nullptr);
// Verify the outlined function signature.
Function *OutlinedFn =
dyn_cast<Function>(TeamsForkCall->getArgOperand(2)->stripPointerCasts());
ASSERT_NE(OutlinedFn, nullptr);
EXPECT_FALSE(OutlinedFn->isDeclaration());
EXPECT_TRUE(OutlinedFn->arg_size() >= 3);
EXPECT_EQ(OutlinedFn->getArg(0)->getType(), Builder.getPtrTy()); // global_tid
EXPECT_EQ(OutlinedFn->getArg(1)->getType(), Builder.getPtrTy()); // bound_tid
EXPECT_EQ(OutlinedFn->getArg(2)->getType(),
Builder.getPtrTy()); // captured args
// Check for TruncInst and ICmpInst in the outlined function.
EXPECT_TRUE(any_of(instructions(OutlinedFn),
[](Instruction &inst) { return isa<TruncInst>(&inst); }));
EXPECT_TRUE(any_of(instructions(OutlinedFn),
[](Instruction &inst) { return isa<ICmpInst>(&inst); }));
}
TEST_F(OpenMPIRBuilderTest, CreateTeamsWithThreadLimit) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> &Builder = OMPBuilder.Builder;
Builder.SetInsertPoint(BB);
Function *FakeFunction =
Function::Create(FunctionType::get(Builder.getVoidTy(), false),
GlobalValue::ExternalLinkage, "fakeFunction", M.get());
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
Builder.CreateCall(FakeFunction, {});
return Error::success();
};
// `F` has an argument - an integer, so we use that as the thread limit.
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(
/*=*/Builder, BodyGenCB, /*NumTeamsLower=*/nullptr,
/*NumTeamsUpper=*/nullptr,
/*ThreadLimit=*/F->arg_begin(),
/*IfExpr=*/nullptr));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
ASSERT_FALSE(verifyModule(*M));
CallInst *PushNumTeamsCallInst =
findSingleCall(F, OMPRTL___kmpc_push_num_teams_51, OMPBuilder);
ASSERT_NE(PushNumTeamsCallInst, nullptr);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(2), Builder.getInt32(0));
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(3), Builder.getInt32(0));
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(4), &*F->arg_begin());
// Verifying that the next instruction to execute is kmpc_fork_teams
BranchInst *BrInst =
dyn_cast<BranchInst>(PushNumTeamsCallInst->getNextNode());
ASSERT_NE(BrInst, nullptr);
ASSERT_EQ(BrInst->getNumSuccessors(), 1U);
BasicBlock::iterator NextInstruction =
BrInst->getSuccessor(0)->getFirstNonPHIOrDbgOrLifetime();
CallInst *ForkTeamsCI = nullptr;
if (NextInstruction != BrInst->getSuccessor(0)->end())
ForkTeamsCI = dyn_cast_if_present<CallInst>(NextInstruction);
ASSERT_NE(ForkTeamsCI, nullptr);
EXPECT_EQ(ForkTeamsCI->getCalledFunction(),
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_fork_teams));
}
TEST_F(OpenMPIRBuilderTest, CreateTeamsWithNumTeamsUpper) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> &Builder = OMPBuilder.Builder;
Builder.SetInsertPoint(BB);
Function *FakeFunction =
Function::Create(FunctionType::get(Builder.getVoidTy(), false),
GlobalValue::ExternalLinkage, "fakeFunction", M.get());
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
Builder.CreateCall(FakeFunction, {});
return Error::success();
};
// `F` already has an integer argument, so we use that as upper bound to
// `num_teams`
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(Builder, BodyGenCB,
/*NumTeamsLower=*/nullptr,
/*NumTeamsUpper=*/F->arg_begin(),
/*ThreadLimit=*/nullptr,
/*IfExpr=*/nullptr));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
ASSERT_FALSE(verifyModule(*M));
CallInst *PushNumTeamsCallInst =
findSingleCall(F, OMPRTL___kmpc_push_num_teams_51, OMPBuilder);
ASSERT_NE(PushNumTeamsCallInst, nullptr);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(2), &*F->arg_begin());
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(3), &*F->arg_begin());
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(4), Builder.getInt32(0));
// Verifying that the next instruction to execute is kmpc_fork_teams
BranchInst *BrInst =
dyn_cast<BranchInst>(PushNumTeamsCallInst->getNextNode());
ASSERT_NE(BrInst, nullptr);
ASSERT_EQ(BrInst->getNumSuccessors(), 1U);
BasicBlock::iterator NextInstruction =
BrInst->getSuccessor(0)->getFirstNonPHIOrDbgOrLifetime();
CallInst *ForkTeamsCI = nullptr;
if (NextInstruction != BrInst->getSuccessor(0)->end())
ForkTeamsCI = dyn_cast_if_present<CallInst>(NextInstruction);
ASSERT_NE(ForkTeamsCI, nullptr);
EXPECT_EQ(ForkTeamsCI->getCalledFunction(),
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_fork_teams));
}
TEST_F(OpenMPIRBuilderTest, CreateTeamsWithNumTeamsBoth) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> &Builder = OMPBuilder.Builder;
Builder.SetInsertPoint(BB);
Function *FakeFunction =
Function::Create(FunctionType::get(Builder.getVoidTy(), false),
GlobalValue::ExternalLinkage, "fakeFunction", M.get());
Value *NumTeamsLower =
Builder.CreateAdd(F->arg_begin(), Builder.getInt32(5), "numTeamsLower");
Value *NumTeamsUpper =
Builder.CreateAdd(F->arg_begin(), Builder.getInt32(10), "numTeamsUpper");
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
Builder.CreateCall(FakeFunction, {});
return Error::success();
};
// `F` already has an integer argument, so we use that as upper bound to
// `num_teams`
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(Builder, BodyGenCB, NumTeamsLower, NumTeamsUpper,
/*ThreadLimit=*/nullptr, /*IfExpr=*/nullptr));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
ASSERT_FALSE(verifyModule(*M));
CallInst *PushNumTeamsCallInst =
findSingleCall(F, OMPRTL___kmpc_push_num_teams_51, OMPBuilder);
ASSERT_NE(PushNumTeamsCallInst, nullptr);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(2), NumTeamsLower);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(3), NumTeamsUpper);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(4), Builder.getInt32(0));
// Verifying that the next instruction to execute is kmpc_fork_teams
BranchInst *BrInst =
dyn_cast<BranchInst>(PushNumTeamsCallInst->getNextNode());
ASSERT_NE(BrInst, nullptr);
ASSERT_EQ(BrInst->getNumSuccessors(), 1U);
BasicBlock::iterator NextInstruction =
BrInst->getSuccessor(0)->getFirstNonPHIOrDbgOrLifetime();
CallInst *ForkTeamsCI = nullptr;
if (NextInstruction != BrInst->getSuccessor(0)->end())
ForkTeamsCI = dyn_cast_if_present<CallInst>(NextInstruction);
ASSERT_NE(ForkTeamsCI, nullptr);
EXPECT_EQ(ForkTeamsCI->getCalledFunction(),
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_fork_teams));
}
TEST_F(OpenMPIRBuilderTest, CreateTeamsWithNumTeamsAndThreadLimit) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> &Builder = OMPBuilder.Builder;
Builder.SetInsertPoint(BB);
BasicBlock *CodegenBB = splitBB(Builder, true);
Builder.SetInsertPoint(CodegenBB);
// Generate values for `num_teams` and `thread_limit` using the first argument
// of the testing function.
Value *NumTeamsLower =
Builder.CreateAdd(F->arg_begin(), Builder.getInt32(5), "numTeamsLower");
Value *NumTeamsUpper =
Builder.CreateAdd(F->arg_begin(), Builder.getInt32(10), "numTeamsUpper");
Value *ThreadLimit =
Builder.CreateAdd(F->arg_begin(), Builder.getInt32(20), "threadLimit");
Function *FakeFunction =
Function::Create(FunctionType::get(Builder.getVoidTy(), false),
GlobalValue::ExternalLinkage, "fakeFunction", M.get());
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
Builder.CreateCall(FakeFunction, {});
return Error::success();
};
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(Builder, BodyGenCB, NumTeamsLower,
NumTeamsUpper, ThreadLimit,
nullptr));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
ASSERT_FALSE(verifyModule(*M));
CallInst *PushNumTeamsCallInst =
findSingleCall(F, OMPRTL___kmpc_push_num_teams_51, OMPBuilder);
ASSERT_NE(PushNumTeamsCallInst, nullptr);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(2), NumTeamsLower);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(3), NumTeamsUpper);
EXPECT_EQ(PushNumTeamsCallInst->getArgOperand(4), ThreadLimit);
// Verifying that the next instruction to execute is kmpc_fork_teams
BranchInst *BrInst =
dyn_cast<BranchInst>(PushNumTeamsCallInst->getNextNode());
ASSERT_NE(BrInst, nullptr);
ASSERT_EQ(BrInst->getNumSuccessors(), 1U);
BasicBlock::iterator NextInstruction =
BrInst->getSuccessor(0)->getFirstNonPHIOrDbgOrLifetime();
CallInst *ForkTeamsCI = nullptr;
if (NextInstruction != BrInst->getSuccessor(0)->end())
ForkTeamsCI = dyn_cast_if_present<CallInst>(NextInstruction);
ASSERT_NE(ForkTeamsCI, nullptr);
EXPECT_EQ(ForkTeamsCI->getCalledFunction(),
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_fork_teams));
}
TEST_F(OpenMPIRBuilderTest, CreateTeamsWithIfCondition) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> &Builder = OMPBuilder.Builder;
Builder.SetInsertPoint(BB);
Value *IfExpr = Builder.CreateLoad(Builder.getInt1Ty(),
Builder.CreateAlloca(Builder.getInt1Ty()));
Function *FakeFunction =
Function::Create(FunctionType::get(Builder.getVoidTy(), false),
GlobalValue::ExternalLinkage, "fakeFunction", M.get());
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
Builder.CreateCall(FakeFunction, {});
return Error::success();
};
// `F` already has an integer argument, so we use that as upper bound to
// `num_teams`
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(Builder, BodyGenCB,
/*NumTeamsLower=*/nullptr,
/*NumTeamsUpper=*/nullptr,
/*ThreadLimit=*/nullptr, IfExpr));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
ASSERT_FALSE(verifyModule(*M));
CallInst *PushNumTeamsCallInst =
findSingleCall(F, OMPRTL___kmpc_push_num_teams_51, OMPBuilder);
ASSERT_NE(PushNumTeamsCallInst, nullptr);
Value *NumTeamsLower = PushNumTeamsCallInst->getArgOperand(2);
Value *NumTeamsUpper = PushNumTeamsCallInst->getArgOperand(3);
Value *ThreadLimit = PushNumTeamsCallInst->getArgOperand(4);
// Check the lower_bound
ASSERT_NE(NumTeamsLower, nullptr);
SelectInst *NumTeamsLowerSelectInst = dyn_cast<SelectInst>(NumTeamsLower);
ASSERT_NE(NumTeamsLowerSelectInst, nullptr);
EXPECT_EQ(NumTeamsLowerSelectInst->getCondition(), IfExpr);
EXPECT_EQ(NumTeamsLowerSelectInst->getTrueValue(), Builder.getInt32(0));
EXPECT_EQ(NumTeamsLowerSelectInst->getFalseValue(), Builder.getInt32(1));
// Check the upper_bound
ASSERT_NE(NumTeamsUpper, nullptr);
SelectInst *NumTeamsUpperSelectInst = dyn_cast<SelectInst>(NumTeamsUpper);
ASSERT_NE(NumTeamsUpperSelectInst, nullptr);
EXPECT_EQ(NumTeamsUpperSelectInst->getCondition(), IfExpr);
EXPECT_EQ(NumTeamsUpperSelectInst->getTrueValue(), Builder.getInt32(0));
EXPECT_EQ(NumTeamsUpperSelectInst->getFalseValue(), Builder.getInt32(1));
// Check thread_limit
EXPECT_EQ(ThreadLimit, Builder.getInt32(0));
}
TEST_F(OpenMPIRBuilderTest, CreateTeamsWithIfConditionAndNumTeams) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> &Builder = OMPBuilder.Builder;
Builder.SetInsertPoint(BB);
Value *IfExpr = Builder.CreateLoad(
Builder.getInt32Ty(), Builder.CreateAlloca(Builder.getInt32Ty()));
Value *NumTeamsLower = Builder.CreateAdd(F->arg_begin(), Builder.getInt32(5));
Value *NumTeamsUpper =
Builder.CreateAdd(F->arg_begin(), Builder.getInt32(10));
Value *ThreadLimit = Builder.CreateAdd(F->arg_begin(), Builder.getInt32(20));
Function *FakeFunction =
Function::Create(FunctionType::get(Builder.getVoidTy(), false),
GlobalValue::ExternalLinkage, "fakeFunction", M.get());
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
Builder.CreateCall(FakeFunction, {});
return Error::success();
};
// `F` already has an integer argument, so we use that as upper bound to
// `num_teams`
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTeams(Builder, BodyGenCB, NumTeamsLower,
NumTeamsUpper, ThreadLimit,
IfExpr));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
ASSERT_FALSE(verifyModule(*M));
CallInst *PushNumTeamsCallInst =
findSingleCall(F, OMPRTL___kmpc_push_num_teams_51, OMPBuilder);
ASSERT_NE(PushNumTeamsCallInst, nullptr);
Value *NumTeamsLowerArg = PushNumTeamsCallInst->getArgOperand(2);
Value *NumTeamsUpperArg = PushNumTeamsCallInst->getArgOperand(3);
Value *ThreadLimitArg = PushNumTeamsCallInst->getArgOperand(4);
// Get the boolean conversion of if expression
ASSERT_TRUE(IfExpr->hasOneUse());
User *IfExprInst = IfExpr->user_back();
ICmpInst *IfExprCmpInst = dyn_cast<ICmpInst>(IfExprInst);
ASSERT_NE(IfExprCmpInst, nullptr);
EXPECT_EQ(IfExprCmpInst->getPredicate(), ICmpInst::Predicate::ICMP_NE);
EXPECT_EQ(IfExprCmpInst->getOperand(0), IfExpr);
EXPECT_EQ(IfExprCmpInst->getOperand(1), Builder.getInt32(0));
// Check the lower_bound
ASSERT_NE(NumTeamsLowerArg, nullptr);
SelectInst *NumTeamsLowerSelectInst = dyn_cast<SelectInst>(NumTeamsLowerArg);
ASSERT_NE(NumTeamsLowerSelectInst, nullptr);
EXPECT_EQ(NumTeamsLowerSelectInst->getCondition(), IfExprCmpInst);
EXPECT_EQ(NumTeamsLowerSelectInst->getTrueValue(), NumTeamsLower);
EXPECT_EQ(NumTeamsLowerSelectInst->getFalseValue(), Builder.getInt32(1));
// Check the upper_bound
ASSERT_NE(NumTeamsUpperArg, nullptr);
SelectInst *NumTeamsUpperSelectInst = dyn_cast<SelectInst>(NumTeamsUpperArg);
ASSERT_NE(NumTeamsUpperSelectInst, nullptr);
EXPECT_EQ(NumTeamsUpperSelectInst->getCondition(), IfExprCmpInst);
EXPECT_EQ(NumTeamsUpperSelectInst->getTrueValue(), NumTeamsUpper);
EXPECT_EQ(NumTeamsUpperSelectInst->getFalseValue(), Builder.getInt32(1));
// Check thread_limit
EXPECT_EQ(ThreadLimitArg, ThreadLimit);
}
/// Returns the single instruction of InstTy type in BB that uses the value V.
/// If there is more than one such instruction, returns null.
template <typename InstTy>
static InstTy *findSingleUserInBlock(Value *V, BasicBlock *BB) {
InstTy *Result = nullptr;
for (User *U : V->users()) {
auto *Inst = dyn_cast<InstTy>(U);
if (!Inst || Inst->getParent() != BB)
continue;
if (Result) {
if (auto *SI = dyn_cast<StoreInst>(Inst)) {
if (V == SI->getValueOperand())
continue;
} else {
return nullptr;
}
}
Result = Inst;
}
return Result;
}
/// Returns true if BB contains a simple binary reduction that loads a value
/// from Accum, performs some binary operation with it, and stores it back to
/// Accum.
static bool isSimpleBinaryReduction(Value *Accum, BasicBlock *BB,
Instruction::BinaryOps *OpCode = nullptr) {
StoreInst *Store = findSingleUserInBlock<StoreInst>(Accum, BB);
if (!Store)
return false;
auto *Stored = dyn_cast<BinaryOperator>(Store->getOperand(0));
if (!Stored)
return false;
if (OpCode && *OpCode != Stored->getOpcode())
return false;
auto *Load = dyn_cast<LoadInst>(Stored->getOperand(0));
return Load && Load->getOperand(0) == Accum;
}
/// Returns true if BB contains a binary reduction that reduces V using a binary
/// operator into an accumulator that is a function argument.
static bool isValueReducedToFuncArg(Value *V, BasicBlock *BB) {
auto *ReductionOp = findSingleUserInBlock<BinaryOperator>(V, BB);
if (!ReductionOp)
return false;
auto *GlobalLoad = dyn_cast<LoadInst>(ReductionOp->getOperand(0));
if (!GlobalLoad)
return false;
auto *Store = findSingleUserInBlock<StoreInst>(ReductionOp, BB);
if (!Store)
return false;
return Store->getPointerOperand() == GlobalLoad->getPointerOperand() &&
isa<Argument>(findAggregateFromValue(GlobalLoad->getPointerOperand()));
}
/// Finds among users of Ptr a pair of GEP instructions with indices [0, 0] and
/// [0, 1], respectively, and assigns results of these instructions to Zero and
/// One. Returns true on success, false on failure or if such instructions are
/// not unique among the users of Ptr.
static bool findGEPZeroOne(Value *Ptr, Value *&Zero, Value *&One) {
Zero = nullptr;
One = nullptr;
for (User *U : Ptr->users()) {
if (auto *GEP = dyn_cast<GetElementPtrInst>(U)) {
if (GEP->getNumIndices() != 2)
continue;
auto *FirstIdx = dyn_cast<ConstantInt>(GEP->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(GEP->getOperand(2));
EXPECT_NE(FirstIdx, nullptr);
EXPECT_NE(SecondIdx, nullptr);
EXPECT_TRUE(FirstIdx->isZero());
if (SecondIdx->isZero()) {
if (Zero)
return false;
Zero = GEP;
} else if (SecondIdx->isOne()) {
if (One)
return false;
One = GEP;
} else {
return false;
}
}
}
return Zero != nullptr && One != nullptr;
}
static OpenMPIRBuilder::InsertPointTy
sumReduction(OpenMPIRBuilder::InsertPointTy IP, Value *LHS, Value *RHS,
Value *&Result) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Result = Builder.CreateFAdd(LHS, RHS, "red.add");
return Builder.saveIP();
}
static OpenMPIRBuilder::InsertPointTy
sumAtomicReduction(OpenMPIRBuilder::InsertPointTy IP, Type *Ty, Value *LHS,
Value *RHS) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Value *Partial = Builder.CreateLoad(Ty, RHS, "red.partial");
Builder.CreateAtomicRMW(AtomicRMWInst::FAdd, LHS, Partial, std::nullopt,
AtomicOrdering::Monotonic);
return Builder.saveIP();
}
static OpenMPIRBuilder::InsertPointTy
xorReduction(OpenMPIRBuilder::InsertPointTy IP, Value *LHS, Value *RHS,
Value *&Result) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Result = Builder.CreateXor(LHS, RHS, "red.xor");
return Builder.saveIP();
}
static OpenMPIRBuilder::InsertPointTy
xorAtomicReduction(OpenMPIRBuilder::InsertPointTy IP, Type *Ty, Value *LHS,
Value *RHS) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Value *Partial = Builder.CreateLoad(Ty, RHS, "red.partial");
Builder.CreateAtomicRMW(AtomicRMWInst::Xor, LHS, Partial, std::nullopt,
AtomicOrdering::Monotonic);
return Builder.saveIP();
}
TEST_F(OpenMPIRBuilderTest, CreateReductions) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
// Create variables to be reduced.
InsertPointTy OuterAllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
Type *SumType = Builder.getFloatTy();
Type *XorType = Builder.getInt32Ty();
Value *SumReduced;
Value *XorReduced;
{
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(OuterAllocaIP);
SumReduced = Builder.CreateAlloca(SumType);
XorReduced = Builder.CreateAlloca(XorType);
}
// Store initial values of reductions into global variables.
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0), SumReduced);
Builder.CreateStore(Builder.getInt32(1), XorReduced);
// The loop body computes two reductions:
// sum of (float) thread-id;
// xor of thread-id;
// and store the result in global variables.
InsertPointTy BodyIP, BodyAllocaIP;
auto BodyGenCB = [&](InsertPointTy InnerAllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
uint32_t StrSize;
Constant *SrcLocStr = OMPBuilder.getOrCreateSrcLocStr(Loc, StrSize);
Value *Ident = OMPBuilder.getOrCreateIdent(SrcLocStr, StrSize);
Value *TID = OMPBuilder.getOrCreateThreadID(Ident);
Value *SumLocal =
Builder.CreateUIToFP(TID, Builder.getFloatTy(), "sum.local");
Value *SumPartial = Builder.CreateLoad(SumType, SumReduced, "sum.partial");
Value *XorPartial = Builder.CreateLoad(XorType, XorReduced, "xor.partial");
Value *Sum = Builder.CreateFAdd(SumPartial, SumLocal, "sum");
Value *Xor = Builder.CreateXor(XorPartial, TID, "xor");
Builder.CreateStore(Sum, SumReduced);
Builder.CreateStore(Xor, XorReduced);
BodyIP = Builder.saveIP();
BodyAllocaIP = InnerAllocIP;
return Error::success();
};
// Privatization for reduction creates local copies of reduction variables and
// initializes them to reduction-neutral values.
Value *SumPrivatized;
Value *XorPrivatized;
auto PrivCB = [&](InsertPointTy InnerAllocaIP, InsertPointTy CodeGenIP,
Value &Original, Value &Inner, Value *&ReplVal) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(InnerAllocaIP);
if (&Original == SumReduced) {
SumPrivatized = Builder.CreateAlloca(Builder.getFloatTy());
ReplVal = SumPrivatized;
} else if (&Original == XorReduced) {
XorPrivatized = Builder.CreateAlloca(Builder.getInt32Ty());
ReplVal = XorPrivatized;
} else {
ReplVal = &Inner;
return CodeGenIP;
}
Builder.restoreIP(CodeGenIP);
if (&Original == SumReduced)
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0),
SumPrivatized);
else if (&Original == XorReduced)
Builder.CreateStore(Builder.getInt32(0), XorPrivatized);
return Builder.saveIP();
};
// Do nothing in finalization.
auto FiniCB = [&](InsertPointTy CodeGenIP) { return Error::success(); };
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createParallel(
Loc, OuterAllocaIP, {}, BodyGenCB, PrivCB, FiniCB,
/* IfCondition */ nullptr,
/* NumThreads */ nullptr, OMP_PROC_BIND_default,
/* IsCancellable */ false));
Builder.restoreIP(AfterIP);
OpenMPIRBuilder::ReductionInfo ReductionInfos[] = {
{SumType, SumReduced, SumPrivatized,
/*EvaluationKind=*/OpenMPIRBuilder::EvalKind::Scalar, sumReduction,
/*ReductionGenClang=*/nullptr, sumAtomicReduction},
{XorType, XorReduced, XorPrivatized,
/*EvaluationKind=*/OpenMPIRBuilder::EvalKind::Scalar, xorReduction,
/*ReductionGenClang=*/nullptr, xorAtomicReduction}};
OMPBuilder.Config.setIsGPU(false);
bool ReduceVariableByRef[] = {false, false};
ASSERT_THAT_EXPECTED(OMPBuilder.createReductions(BodyIP, BodyAllocaIP,
ReductionInfos,
ReduceVariableByRef),
Succeeded());
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize(F);
// The IR must be valid.
EXPECT_FALSE(verifyModule(*M));
// Outlining must have happened.
SmallVector<CallInst *> ForkCalls;
findCalls(F, omp::RuntimeFunction::OMPRTL___kmpc_fork_call, OMPBuilder,
ForkCalls);
ASSERT_EQ(ForkCalls.size(), 1u);
Value *CalleeVal = ForkCalls[0]->getOperand(2);
Function *Outlined = dyn_cast<Function>(CalleeVal);
EXPECT_NE(Outlined, nullptr);
// Check that the lock variable was created with the expected name.
GlobalVariable *LockVar =
M->getGlobalVariable(".gomp_critical_user_.reduction.var");
EXPECT_NE(LockVar, nullptr);
// Find the allocation of a local array that will be used to call the runtime
// reduciton function.
BasicBlock &AllocBlock = Outlined->getEntryBlock();
Value *LocalArray = nullptr;
for (Instruction &I : AllocBlock) {
if (AllocaInst *Alloc = dyn_cast<AllocaInst>(&I)) {
if (!Alloc->getAllocatedType()->isArrayTy() ||
!Alloc->getAllocatedType()->getArrayElementType()->isPointerTy())
continue;
LocalArray = Alloc;
break;
}
}
ASSERT_NE(LocalArray, nullptr);
// Find the call to the runtime reduction function.
BasicBlock *BB = AllocBlock.getUniqueSuccessor();
Value *LocalArrayPtr = nullptr;
Value *ReductionFnVal = nullptr;
Value *SwitchArg = nullptr;
for (Instruction &I : *BB) {
if (CallInst *Call = dyn_cast<CallInst>(&I)) {
if (Call->getCalledFunction() !=
OMPBuilder.getOrCreateRuntimeFunctionPtr(
RuntimeFunction::OMPRTL___kmpc_reduce))
continue;
LocalArrayPtr = Call->getOperand(4);
ReductionFnVal = Call->getOperand(5);
SwitchArg = Call;
break;
}
}
// Check that the local array is passed to the function.
ASSERT_NE(LocalArrayPtr, nullptr);
EXPECT_EQ(LocalArrayPtr, LocalArray);
// Find the GEP instructions preceding stores to the local array.
Value *FirstArrayElemPtr = nullptr;
Value *SecondArrayElemPtr = nullptr;
EXPECT_TRUE(LocalArray->hasNUses(3));
ASSERT_TRUE(
findGEPZeroOne(LocalArray, FirstArrayElemPtr, SecondArrayElemPtr));
// Check that the values stored into the local array are privatized reduction
// variables.
auto *FirstPrivatized = dyn_cast_or_null<AllocaInst>(
findStoredValue<GetElementPtrInst>(FirstArrayElemPtr));
auto *SecondPrivatized = dyn_cast_or_null<AllocaInst>(
findStoredValue<GetElementPtrInst>(SecondArrayElemPtr));
ASSERT_NE(FirstPrivatized, nullptr);
ASSERT_NE(SecondPrivatized, nullptr);
ASSERT_TRUE(isa<Instruction>(FirstArrayElemPtr));
EXPECT_TRUE(isSimpleBinaryReduction(
FirstPrivatized, cast<Instruction>(FirstArrayElemPtr)->getParent()));
EXPECT_TRUE(isSimpleBinaryReduction(
SecondPrivatized, cast<Instruction>(FirstArrayElemPtr)->getParent()));
// Check that the result of the runtime reduction call is used for further
// dispatch.
ASSERT_TRUE(SwitchArg->hasOneUse());
SwitchInst *Switch = dyn_cast<SwitchInst>(*SwitchArg->user_begin());
ASSERT_NE(Switch, nullptr);
EXPECT_EQ(Switch->getNumSuccessors(), 3u);
BasicBlock *NonAtomicBB = Switch->case_begin()->getCaseSuccessor();
BasicBlock *AtomicBB = std::next(Switch->case_begin())->getCaseSuccessor();
// Non-atomic block contains reductions to the global reduction variable,
// which is passed into the outlined function as an argument.
Value *FirstLoad =
findSingleUserInBlock<LoadInst>(FirstPrivatized, NonAtomicBB);
Value *SecondLoad =
findSingleUserInBlock<LoadInst>(SecondPrivatized, NonAtomicBB);
EXPECT_TRUE(isValueReducedToFuncArg(FirstLoad, NonAtomicBB));
EXPECT_TRUE(isValueReducedToFuncArg(SecondLoad, NonAtomicBB));
// Atomic block also constains reductions to the global reduction variable.
FirstLoad = findSingleUserInBlock<LoadInst>(FirstPrivatized, AtomicBB);
SecondLoad = findSingleUserInBlock<LoadInst>(SecondPrivatized, AtomicBB);
auto *FirstAtomic = findSingleUserInBlock<AtomicRMWInst>(FirstLoad, AtomicBB);
auto *SecondAtomic =
findSingleUserInBlock<AtomicRMWInst>(SecondLoad, AtomicBB);
ASSERT_NE(FirstAtomic, nullptr);
Value *AtomicStorePointer = FirstAtomic->getPointerOperand();
EXPECT_TRUE(isa<Argument>(findAggregateFromValue(AtomicStorePointer)));
ASSERT_NE(SecondAtomic, nullptr);
AtomicStorePointer = SecondAtomic->getPointerOperand();
EXPECT_TRUE(isa<Argument>(findAggregateFromValue(AtomicStorePointer)));
// Check that the separate reduction function also performs (non-atomic)
// reductions after extracting reduction variables from its arguments.
Function *ReductionFn = cast<Function>(ReductionFnVal);
BasicBlock *FnReductionBB = &ReductionFn->getEntryBlock();
Value *FirstLHSPtr;
Value *SecondLHSPtr;
ASSERT_TRUE(
findGEPZeroOne(ReductionFn->getArg(0), FirstLHSPtr, SecondLHSPtr));
Value *Opaque = findSingleUserInBlock<LoadInst>(FirstLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
EXPECT_TRUE(isSimpleBinaryReduction(Opaque, FnReductionBB));
Opaque = findSingleUserInBlock<LoadInst>(SecondLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
EXPECT_TRUE(isSimpleBinaryReduction(Opaque, FnReductionBB));
Value *FirstRHS;
Value *SecondRHS;
EXPECT_TRUE(findGEPZeroOne(ReductionFn->getArg(1), FirstRHS, SecondRHS));
}
static void createScan(llvm::Value *scanVar, llvm::Type *scanType,
OpenMPIRBuilder &OMPBuilder, IRBuilder<> &Builder,
OpenMPIRBuilder::LocationDescription Loc,
OpenMPIRBuilder::InsertPointTy &allocaIP,
ScanInfo *&ScanRedInfo) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
ASSERT_EXPECTED_INIT(InsertPointTy, retIp,
OMPBuilder.createScan(Loc, allocaIP, {scanVar},
{scanType}, true, ScanRedInfo));
Builder.restoreIP(retIp);
}
/*
Following is the pseudocode of the code generated by the test case
<declare pointer to buffer> ptr
size num_iters = 100
// temp buffer allocation
omp masked {
buff = malloc(num_iters*scanvarstype)
*ptr = buff
}
barrier;
// input phase loop
for (i: 0..<num_iters>) {
<input phase>;
buffer = *ptr;
buffer[i] = red;
}
// scan reduction
omp masked
{
for (int k = 0; k != ceil(log2(num_iters)); ++k) {
i=pow(2,k)
for (size cnt = last_iter; cnt >= i; --cnt) {
buffer = *ptr;
buffer[cnt] op= buffer[cnt-i];
}
}
}
barrier;
// scan phase loop
for (0..<num_iters>) {
buffer = *ptr;
red = buffer[i] ;
<scan phase>;
}
// temp buffer deletion
omp masked {
free(*ptr)
}
barrier;
*/
TEST_F(OpenMPIRBuilderTest, ScanReduction) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
Type *LCTy = TripCount->getType();
Value *StartVal = ConstantInt::get(LCTy, 1);
Value *StopVal = ConstantInt::get(LCTy, 100);
Value *Step = ConstantInt::get(LCTy, 1);
auto AllocaIP = Builder.saveIP();
llvm::Value *ScanVar = Builder.CreateAlloca(Builder.getFloatTy());
llvm::Value *OrigVar = Builder.CreateAlloca(Builder.getFloatTy());
unsigned NumBodiesGenerated = 0;
ScanInfo *ScanRedInfo;
ASSERT_EXPECTED_INIT(ScanInfo *, ScanInformation,
OMPBuilder.scanInfoInitialize());
ScanRedInfo = ScanInformation;
auto LoopBodyGenCB = [&](InsertPointTy CodeGenIP, llvm::Value *LC) {
NumBodiesGenerated += 1;
Builder.restoreIP(CodeGenIP);
createScan(ScanVar, Builder.getFloatTy(), OMPBuilder, Builder, Loc,
AllocaIP, ScanRedInfo);
return Error::success();
};
llvm::SmallVector<CanonicalLoopInfo *> loops;
ASSERT_EXPECTED_INIT(llvm::SmallVector<CanonicalLoopInfo *>, loopvec,
OMPBuilder.createCanonicalScanLoops(
Loc, LoopBodyGenCB, StartVal, StopVal, Step, false,
false, Builder.saveIP(), "scan", ScanRedInfo));
loops = loopvec;
CanonicalLoopInfo *InputLoop = loops.front();
CanonicalLoopInfo *ScanLoop = loops.back();
Builder.restoreIP(ScanLoop->getAfterIP());
InputLoop->assertOK();
ScanLoop->assertOK();
EXPECT_EQ(ScanLoop->getAfter(), Builder.GetInsertBlock());
EXPECT_EQ(NumBodiesGenerated, 2U);
SmallVector<OpenMPIRBuilder::ReductionInfo> ReductionInfos = {
{Builder.getFloatTy(), OrigVar, ScanVar,
/*EvaluationKind=*/OpenMPIRBuilder::EvalKind::Scalar, sumReduction,
/*ReductionGenClang=*/nullptr, sumAtomicReduction}};
OpenMPIRBuilder::LocationDescription RedLoc({InputLoop->getAfterIP(), DL});
llvm::BasicBlock *Cont = splitBB(Builder, false, "omp.scan.loop.cont");
ASSERT_EXPECTED_INIT(
InsertPointTy, retIp,
OMPBuilder.emitScanReduction(RedLoc, ReductionInfos, ScanRedInfo));
Builder.restoreIP(retIp);
Builder.CreateBr(Cont);
Builder.SetInsertPoint(Cont);
unsigned NumMallocs = 0;
unsigned NumFrees = 0;
unsigned NumMasked = 0;
unsigned NumEndMasked = 0;
unsigned NumLog = 0;
unsigned NumCeil = 0;
for (Instruction &I : instructions(F)) {
if (!isa<CallInst>(I))
continue;
CallInst *Call = dyn_cast<CallInst>(&I);
StringRef Name = Call->getCalledFunction()->getName();
if (Name.equals_insensitive("malloc")) {
NumMallocs += 1;
} else if (Name.equals_insensitive("free")) {
NumFrees += 1;
} else if (Name.equals_insensitive("__kmpc_masked")) {
NumMasked += 1;
} else if (Name.equals_insensitive("__kmpc_end_masked")) {
NumEndMasked += 1;
} else if (Name.equals_insensitive("llvm.log2.f64")) {
NumLog += 1;
} else if (Name.equals_insensitive("llvm.ceil.f64")) {
NumCeil += 1;
}
}
EXPECT_EQ(NumBodiesGenerated, 2U);
EXPECT_EQ(NumMasked, 3U);
EXPECT_EQ(NumEndMasked, 3U);
EXPECT_EQ(NumMallocs, 1U);
EXPECT_EQ(NumFrees, 1U);
EXPECT_EQ(NumLog, 1U);
EXPECT_EQ(NumCeil, 1U);
}
TEST_F(OpenMPIRBuilderTest, CreateTwoReductions) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
// Create variables to be reduced.
InsertPointTy OuterAllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
Type *SumType = Builder.getFloatTy();
Type *XorType = Builder.getInt32Ty();
Value *SumReduced;
Value *XorReduced;
{
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(OuterAllocaIP);
SumReduced = Builder.CreateAlloca(SumType);
XorReduced = Builder.CreateAlloca(XorType);
}
// Store initial values of reductions into global variables.
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0), SumReduced);
Builder.CreateStore(Builder.getInt32(1), XorReduced);
InsertPointTy FirstBodyIP, FirstBodyAllocaIP;
auto FirstBodyGenCB = [&](InsertPointTy InnerAllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
uint32_t StrSize;
Constant *SrcLocStr = OMPBuilder.getOrCreateSrcLocStr(Loc, StrSize);
Value *Ident = OMPBuilder.getOrCreateIdent(SrcLocStr, StrSize);
Value *TID = OMPBuilder.getOrCreateThreadID(Ident);
Value *SumLocal =
Builder.CreateUIToFP(TID, Builder.getFloatTy(), "sum.local");
Value *SumPartial = Builder.CreateLoad(SumType, SumReduced, "sum.partial");
Value *Sum = Builder.CreateFAdd(SumPartial, SumLocal, "sum");
Builder.CreateStore(Sum, SumReduced);
FirstBodyIP = Builder.saveIP();
FirstBodyAllocaIP = InnerAllocIP;
return Error::success();
};
InsertPointTy SecondBodyIP, SecondBodyAllocaIP;
auto SecondBodyGenCB = [&](InsertPointTy InnerAllocIP,
InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
uint32_t StrSize;
Constant *SrcLocStr = OMPBuilder.getOrCreateSrcLocStr(Loc, StrSize);
Value *Ident = OMPBuilder.getOrCreateIdent(SrcLocStr, StrSize);
Value *TID = OMPBuilder.getOrCreateThreadID(Ident);
Value *XorPartial = Builder.CreateLoad(XorType, XorReduced, "xor.partial");
Value *Xor = Builder.CreateXor(XorPartial, TID, "xor");
Builder.CreateStore(Xor, XorReduced);
SecondBodyIP = Builder.saveIP();
SecondBodyAllocaIP = InnerAllocIP;
return Error::success();
};
// Privatization for reduction creates local copies of reduction variables and
// initializes them to reduction-neutral values. The same privatization
// callback is used for both loops, with dispatch based on the value being
// privatized.
Value *SumPrivatized;
Value *XorPrivatized;
auto PrivCB = [&](InsertPointTy InnerAllocaIP, InsertPointTy CodeGenIP,
Value &Original, Value &Inner, Value *&ReplVal) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(InnerAllocaIP);
if (&Original == SumReduced) {
SumPrivatized = Builder.CreateAlloca(Builder.getFloatTy());
ReplVal = SumPrivatized;
} else if (&Original == XorReduced) {
XorPrivatized = Builder.CreateAlloca(Builder.getInt32Ty());
ReplVal = XorPrivatized;
} else {
ReplVal = &Inner;
return CodeGenIP;
}
Builder.restoreIP(CodeGenIP);
if (&Original == SumReduced)
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0),
SumPrivatized);
else if (&Original == XorReduced)
Builder.CreateStore(Builder.getInt32(0), XorPrivatized);
return Builder.saveIP();
};
// Do nothing in finalization.
auto FiniCB = [&](InsertPointTy CodeGenIP) { return Error::success(); };
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP1,
OMPBuilder.createParallel(Loc, OuterAllocaIP, {}, FirstBodyGenCB, PrivCB,
FiniCB, /* IfCondition */ nullptr,
/* NumThreads */ nullptr, OMP_PROC_BIND_default,
/* IsCancellable */ false));
Builder.restoreIP(AfterIP1);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP2,
OMPBuilder.createParallel({Builder.saveIP(), DL}, OuterAllocaIP, {},
SecondBodyGenCB, PrivCB, FiniCB,
/* IfCondition */ nullptr,
/* NumThreads */ nullptr, OMP_PROC_BIND_default,
/* IsCancellable */ false));
Builder.restoreIP(AfterIP2);
OMPBuilder.Config.setIsGPU(false);
bool ReduceVariableByRef[] = {false};
ASSERT_THAT_EXPECTED(
OMPBuilder.createReductions(
FirstBodyIP, FirstBodyAllocaIP,
{{SumType, SumReduced, SumPrivatized,
/*EvaluationKind=*/OpenMPIRBuilder::EvalKind::Scalar, sumReduction,
/*ReductionGenClang=*/nullptr, sumAtomicReduction}},
ReduceVariableByRef),
Succeeded());
ASSERT_THAT_EXPECTED(
OMPBuilder.createReductions(
SecondBodyIP, SecondBodyAllocaIP,
{{XorType, XorReduced, XorPrivatized,
/*EvaluationKind=*/OpenMPIRBuilder::EvalKind::Scalar, xorReduction,
/*ReductionGenClang=*/nullptr, xorAtomicReduction}},
ReduceVariableByRef),
Succeeded());
Builder.restoreIP(AfterIP2);
Builder.CreateRetVoid();
OMPBuilder.finalize(F);
// The IR must be valid.
EXPECT_FALSE(verifyModule(*M));
// Two different outlined functions must have been created.
SmallVector<CallInst *> ForkCalls;
findCalls(F, omp::RuntimeFunction::OMPRTL___kmpc_fork_call, OMPBuilder,
ForkCalls);
ASSERT_EQ(ForkCalls.size(), 2u);
Value *CalleeVal = ForkCalls[0]->getOperand(2);
Function *FirstCallee = cast<Function>(CalleeVal);
CalleeVal = ForkCalls[1]->getOperand(2);
Function *SecondCallee = cast<Function>(CalleeVal);
EXPECT_NE(FirstCallee, SecondCallee);
// Two different reduction functions must have been created.
SmallVector<CallInst *> ReduceCalls;
findCalls(FirstCallee, omp::RuntimeFunction::OMPRTL___kmpc_reduce, OMPBuilder,
ReduceCalls);
ASSERT_EQ(ReduceCalls.size(), 1u);
auto *AddReduction = cast<Function>(ReduceCalls[0]->getOperand(5));
ReduceCalls.clear();
findCalls(SecondCallee, omp::RuntimeFunction::OMPRTL___kmpc_reduce,
OMPBuilder, ReduceCalls);
auto *XorReduction = cast<Function>(ReduceCalls[0]->getOperand(5));
EXPECT_NE(AddReduction, XorReduction);
// Each reduction function does its own kind of reduction.
BasicBlock *FnReductionBB = &AddReduction->getEntryBlock();
Value *FirstLHSPtr = findSingleUserInBlock<GetElementPtrInst>(
AddReduction->getArg(0), FnReductionBB);
ASSERT_NE(FirstLHSPtr, nullptr);
Value *Opaque = findSingleUserInBlock<LoadInst>(FirstLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
Instruction::BinaryOps Opcode = Instruction::FAdd;
EXPECT_TRUE(isSimpleBinaryReduction(Opaque, FnReductionBB, &Opcode));
FnReductionBB = &XorReduction->getEntryBlock();
Value *SecondLHSPtr = findSingleUserInBlock<GetElementPtrInst>(
XorReduction->getArg(0), FnReductionBB);
ASSERT_NE(FirstLHSPtr, nullptr);
Opaque = findSingleUserInBlock<LoadInst>(SecondLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
Opcode = Instruction::Xor;
EXPECT_TRUE(isSimpleBinaryReduction(Opaque, FnReductionBB, &Opcode));
}
TEST_F(OpenMPIRBuilderTest, CreateSectionsSimple) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
using BodyGenCallbackTy = llvm::OpenMPIRBuilder::StorableBodyGenCallbackTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "sections.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
llvm::SmallVector<BodyGenCallbackTy, 4> SectionCBVector;
auto FiniCB = [&](InsertPointTy IP) { return Error::success(); };
auto SectionCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
return Error::success();
};
SectionCBVector.push_back(SectionCB);
auto PrivCB = [](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
llvm::Value &, llvm::Value &Val,
llvm::Value *&ReplVal) { return CodeGenIP; };
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createSections(Loc, AllocaIP, SectionCBVector,
PrivCB, FiniCB, false, false));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid(); // Required at the end of the function
EXPECT_NE(F->getEntryBlock().getTerminator(), nullptr);
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateSections) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
using BodyGenCallbackTy = llvm::OpenMPIRBuilder::StorableBodyGenCallbackTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
llvm::SmallVector<BodyGenCallbackTy, 4> SectionCBVector;
llvm::SmallVector<BasicBlock *, 4> CaseBBs;
BasicBlock *SwitchBB = nullptr;
AllocaInst *PrivAI = nullptr;
SwitchInst *Switch = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumFiniCBCalls = 0;
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
auto FiniCB = [&](InsertPointTy IP) {
++NumFiniCBCalls;
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
auto SectionCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
++NumBodiesGenerated;
CaseBBs.push_back(CodeGenIP.getBlock());
SwitchBB = CodeGenIP.getBlock()->getSinglePredecessor();
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(F->arg_begin()->getType(), PrivAI, "local.alloca");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
return Error::success();
};
auto PrivCB = [](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
llvm::Value &, llvm::Value &Val, llvm::Value *&ReplVal) {
// TODO: Privatization not implemented yet
return CodeGenIP;
};
SectionCBVector.push_back(SectionCB);
SectionCBVector.push_back(SectionCB);
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createSections(Loc, AllocaIP, SectionCBVector,
PrivCB, FINICB_WRAPPER(FiniCB),
false, false));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid(); // Required at the end of the function
// Switch BB's predecessor is loop condition BB, whose successor at index 1 is
// loop's exit BB
BasicBlock *ForExitBB =
SwitchBB->getSinglePredecessor()->getTerminator()->getSuccessor(1);
EXPECT_NE(ForExitBB, nullptr);
EXPECT_NE(PrivAI, nullptr);
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_EQ(F, OutlinedFn);
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(OutlinedFn->arg_size(), 1U);
BasicBlock *LoopPreheaderBB =
OutlinedFn->getEntryBlock().getSingleSuccessor();
// loop variables are 5 - lower bound, upper bound, stride, islastiter, and
// iterator/counter
bool FoundForInit = false;
for (Instruction &Inst : *LoopPreheaderBB) {
if (isa<CallInst>(Inst)) {
if (cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_for_static_init_4u") {
FoundForInit = true;
}
}
}
EXPECT_EQ(FoundForInit, true);
bool FoundForExit = false;
bool FoundBarrier = false;
for (Instruction &Inst : *ForExitBB) {
if (isa<CallInst>(Inst)) {
if (cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_for_static_fini") {
FoundForExit = true;
}
if (cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_barrier") {
FoundBarrier = true;
}
if (FoundForExit && FoundBarrier)
break;
}
}
EXPECT_EQ(FoundForExit, true);
EXPECT_EQ(FoundBarrier, true);
EXPECT_NE(SwitchBB, nullptr);
EXPECT_NE(SwitchBB->getTerminator(), nullptr);
EXPECT_EQ(isa<SwitchInst>(SwitchBB->getTerminator()), true);
Switch = cast<SwitchInst>(SwitchBB->getTerminator());
EXPECT_EQ(Switch->getNumCases(), 2U);
EXPECT_EQ(CaseBBs.size(), 2U);
for (auto *&CaseBB : CaseBBs) {
EXPECT_EQ(CaseBB->getParent(), OutlinedFn);
}
ASSERT_EQ(NumBodiesGenerated, 2U);
ASSERT_EQ(NumFiniCBCalls, 1U);
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateSectionsNoWait) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
using BodyGenCallbackTy = llvm::OpenMPIRBuilder::StorableBodyGenCallbackTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "sections.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
llvm::SmallVector<BodyGenCallbackTy, 4> SectionCBVector;
auto PrivCB = [](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
llvm::Value &, llvm::Value &Val,
llvm::Value *&ReplVal) { return CodeGenIP; };
auto FiniCB = [&](InsertPointTy IP) { return Error::success(); };
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createSections(Loc, AllocaIP, SectionCBVector,
PrivCB, FiniCB, false, true));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid(); // Required at the end of the function
for (auto &Inst : instructions(*F)) {
EXPECT_FALSE(isa<CallInst>(Inst) &&
cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_barrier" &&
"call to function __kmpc_barrier found with nowait");
}
}
TEST_F(OpenMPIRBuilderTest, CreateOffloadMaptypes) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
SmallVector<uint64_t> Mappings = {0, 1};
GlobalVariable *OffloadMaptypesGlobal =
OMPBuilder.createOffloadMaptypes(Mappings, "offload_maptypes");
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(OffloadMaptypesGlobal->getName(), "offload_maptypes");
EXPECT_TRUE(OffloadMaptypesGlobal->isConstant());
EXPECT_TRUE(OffloadMaptypesGlobal->hasGlobalUnnamedAddr());
EXPECT_TRUE(OffloadMaptypesGlobal->hasPrivateLinkage());
EXPECT_TRUE(OffloadMaptypesGlobal->hasInitializer());
Constant *Initializer = OffloadMaptypesGlobal->getInitializer();
EXPECT_TRUE(isa<ConstantDataArray>(Initializer));
ConstantDataArray *MappingInit = dyn_cast<ConstantDataArray>(Initializer);
EXPECT_EQ(MappingInit->getNumElements(), Mappings.size());
EXPECT_TRUE(MappingInit->getType()->getElementType()->isIntegerTy(64));
Constant *CA = ConstantDataArray::get(Builder.getContext(), Mappings);
EXPECT_EQ(MappingInit, CA);
}
TEST_F(OpenMPIRBuilderTest, CreateOffloadMapnames) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
uint32_t StrSize;
Constant *Cst1 =
OMPBuilder.getOrCreateSrcLocStr("array1", "file1", 2, 5, StrSize);
Constant *Cst2 =
OMPBuilder.getOrCreateSrcLocStr("array2", "file1", 3, 5, StrSize);
SmallVector<llvm::Constant *> Names = {Cst1, Cst2};
GlobalVariable *OffloadMaptypesGlobal =
OMPBuilder.createOffloadMapnames(Names, "offload_mapnames");
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(OffloadMaptypesGlobal->getName(), "offload_mapnames");
EXPECT_TRUE(OffloadMaptypesGlobal->isConstant());
EXPECT_FALSE(OffloadMaptypesGlobal->hasGlobalUnnamedAddr());
EXPECT_TRUE(OffloadMaptypesGlobal->hasPrivateLinkage());
EXPECT_TRUE(OffloadMaptypesGlobal->hasInitializer());
Constant *Initializer = OffloadMaptypesGlobal->getInitializer();
EXPECT_TRUE(isa<Constant>(Initializer->getOperand(0)->stripPointerCasts()));
EXPECT_TRUE(isa<Constant>(Initializer->getOperand(1)->stripPointerCasts()));
GlobalVariable *Name1Gbl =
cast<GlobalVariable>(Initializer->getOperand(0)->stripPointerCasts());
EXPECT_TRUE(isa<ConstantDataArray>(Name1Gbl->getInitializer()));
ConstantDataArray *Name1GblCA =
dyn_cast<ConstantDataArray>(Name1Gbl->getInitializer());
EXPECT_EQ(Name1GblCA->getAsCString(), ";file1;array1;2;5;;");
GlobalVariable *Name2Gbl =
cast<GlobalVariable>(Initializer->getOperand(1)->stripPointerCasts());
EXPECT_TRUE(isa<ConstantDataArray>(Name2Gbl->getInitializer()));
ConstantDataArray *Name2GblCA =
dyn_cast<ConstantDataArray>(Name2Gbl->getInitializer());
EXPECT_EQ(Name2GblCA->getAsCString(), ";file1;array2;3;5;;");
EXPECT_TRUE(Initializer->getType()->getArrayElementType()->isPointerTy());
EXPECT_EQ(Initializer->getType()->getArrayNumElements(), Names.size());
}
TEST_F(OpenMPIRBuilderTest, CreateMapperAllocas) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned TotalNbOperand = 2;
OpenMPIRBuilder::MapperAllocas MapperAllocas;
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
OMPBuilder.createMapperAllocas(Loc, AllocaIP, TotalNbOperand, MapperAllocas);
EXPECT_NE(MapperAllocas.ArgsBase, nullptr);
EXPECT_NE(MapperAllocas.Args, nullptr);
EXPECT_NE(MapperAllocas.ArgSizes, nullptr);
EXPECT_TRUE(MapperAllocas.ArgsBase->getAllocatedType()->isArrayTy());
ArrayType *ArrType =
dyn_cast<ArrayType>(MapperAllocas.ArgsBase->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), TotalNbOperand);
EXPECT_TRUE(MapperAllocas.ArgsBase->getAllocatedType()
->getArrayElementType()
->isPointerTy());
EXPECT_TRUE(MapperAllocas.Args->getAllocatedType()->isArrayTy());
ArrType = dyn_cast<ArrayType>(MapperAllocas.Args->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), TotalNbOperand);
EXPECT_TRUE(MapperAllocas.Args->getAllocatedType()
->getArrayElementType()
->isPointerTy());
EXPECT_TRUE(MapperAllocas.ArgSizes->getAllocatedType()->isArrayTy());
ArrType = dyn_cast<ArrayType>(MapperAllocas.ArgSizes->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), TotalNbOperand);
EXPECT_TRUE(MapperAllocas.ArgSizes->getAllocatedType()
->getArrayElementType()
->isIntegerTy(64));
}
TEST_F(OpenMPIRBuilderTest, EmitMapperCall) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
LLVMContext &Ctx = M->getContext();
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned TotalNbOperand = 2;
OpenMPIRBuilder::MapperAllocas MapperAllocas;
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
OMPBuilder.createMapperAllocas(Loc, AllocaIP, TotalNbOperand, MapperAllocas);
auto *BeginMapperFunc = OMPBuilder.getOrCreateRuntimeFunctionPtr(
omp::OMPRTL___tgt_target_data_begin_mapper);
SmallVector<uint64_t> Flags = {0, 2};
uint32_t StrSize;
Constant *SrcLocCst =
OMPBuilder.getOrCreateSrcLocStr("", "file1", 2, 5, StrSize);
Value *SrcLocInfo = OMPBuilder.getOrCreateIdent(SrcLocCst, StrSize);
Constant *Cst1 =
OMPBuilder.getOrCreateSrcLocStr("array1", "file1", 2, 5, StrSize);
Constant *Cst2 =
OMPBuilder.getOrCreateSrcLocStr("array2", "file1", 3, 5, StrSize);
SmallVector<llvm::Constant *> Names = {Cst1, Cst2};
GlobalVariable *Maptypes =
OMPBuilder.createOffloadMaptypes(Flags, ".offload_maptypes");
Value *MaptypesArg = Builder.CreateConstInBoundsGEP2_32(
ArrayType::get(Type::getInt64Ty(Ctx), TotalNbOperand), Maptypes,
/*Idx0=*/0, /*Idx1=*/0);
GlobalVariable *Mapnames =
OMPBuilder.createOffloadMapnames(Names, ".offload_mapnames");
Value *MapnamesArg = Builder.CreateConstInBoundsGEP2_32(
ArrayType::get(PointerType::getUnqual(Ctx), TotalNbOperand), Mapnames,
/*Idx0=*/0, /*Idx1=*/0);
OMPBuilder.emitMapperCall(Builder.saveIP(), BeginMapperFunc, SrcLocInfo,
MaptypesArg, MapnamesArg, MapperAllocas, -1,
TotalNbOperand);
CallInst *MapperCall = dyn_cast<CallInst>(&BB->back());
EXPECT_NE(MapperCall, nullptr);
EXPECT_EQ(MapperCall->arg_size(), 9U);
EXPECT_EQ(MapperCall->getCalledFunction()->getName(),
"__tgt_target_data_begin_mapper");
EXPECT_EQ(MapperCall->getOperand(0), SrcLocInfo);
EXPECT_TRUE(MapperCall->getOperand(1)->getType()->isIntegerTy(64));
EXPECT_TRUE(MapperCall->getOperand(2)->getType()->isIntegerTy(32));
EXPECT_EQ(MapperCall->getOperand(6), MaptypesArg);
EXPECT_EQ(MapperCall->getOperand(7), MapnamesArg);
EXPECT_TRUE(MapperCall->getOperand(8)->getType()->isPointerTy());
}
TEST_F(OpenMPIRBuilderTest, TargetEnterData) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
int64_t DeviceID = 2;
AllocaInst *Val1 =
Builder.CreateAlloca(Builder.getInt32Ty(), Builder.getInt64(1));
ASSERT_NE(Val1, nullptr);
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
llvm::OpenMPIRBuilder::MapInfosTy CombinedInfo;
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
auto GenMapInfoCB =
[&](InsertPointTy codeGenIP) -> llvm::OpenMPIRBuilder::MapInfosTy & {
// Get map clause information.
Builder.restoreIP(codeGenIP);
CombinedInfo.BasePointers.emplace_back(Val1);
CombinedInfo.Pointers.emplace_back(Val1);
CombinedInfo.DevicePointers.emplace_back(
llvm::OpenMPIRBuilder::DeviceInfoTy::None);
CombinedInfo.Sizes.emplace_back(Builder.getInt64(4));
CombinedInfo.Types.emplace_back(llvm::omp::OpenMPOffloadMappingFlags(1));
uint32_t temp;
CombinedInfo.Names.emplace_back(
OMPBuilder.getOrCreateSrcLocStr("unknown", temp));
return CombinedInfo;
};
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
OMPBuilder.Config.setIsGPU(true);
llvm::omp::RuntimeFunction RTLFunc = OMPRTL___tgt_target_data_begin_mapper;
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTargetData(
Loc, AllocaIP, Builder.saveIP(), {}, Builder.getInt64(DeviceID),
/* IfCond= */ nullptr, Info, GenMapInfoCB, CustomMapperCB, &RTLFunc));
Builder.restoreIP(AfterIP);
CallInst *TargetDataCall = dyn_cast<CallInst>(&BB->back());
EXPECT_NE(TargetDataCall, nullptr);
EXPECT_EQ(TargetDataCall->arg_size(), 9U);
EXPECT_EQ(TargetDataCall->getCalledFunction()->getName(),
"__tgt_target_data_begin_mapper");
EXPECT_TRUE(TargetDataCall->getOperand(1)->getType()->isIntegerTy(64));
EXPECT_TRUE(TargetDataCall->getOperand(2)->getType()->isIntegerTy(32));
EXPECT_TRUE(TargetDataCall->getOperand(8)->getType()->isPointerTy());
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, TargetExitData) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
int64_t DeviceID = 2;
AllocaInst *Val1 =
Builder.CreateAlloca(Builder.getInt32Ty(), Builder.getInt64(1));
ASSERT_NE(Val1, nullptr);
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
llvm::OpenMPIRBuilder::MapInfosTy CombinedInfo;
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
auto GenMapInfoCB =
[&](InsertPointTy codeGenIP) -> llvm::OpenMPIRBuilder::MapInfosTy & {
// Get map clause information.
Builder.restoreIP(codeGenIP);
CombinedInfo.BasePointers.emplace_back(Val1);
CombinedInfo.Pointers.emplace_back(Val1);
CombinedInfo.DevicePointers.emplace_back(
llvm::OpenMPIRBuilder::DeviceInfoTy::None);
CombinedInfo.Sizes.emplace_back(Builder.getInt64(4));
CombinedInfo.Types.emplace_back(llvm::omp::OpenMPOffloadMappingFlags(2));
uint32_t temp;
CombinedInfo.Names.emplace_back(
OMPBuilder.getOrCreateSrcLocStr("unknown", temp));
return CombinedInfo;
};
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
OMPBuilder.Config.setIsGPU(true);
llvm::omp::RuntimeFunction RTLFunc = OMPRTL___tgt_target_data_end_mapper;
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTargetData(
Loc, AllocaIP, Builder.saveIP(), {}, Builder.getInt64(DeviceID),
/* IfCond= */ nullptr, Info, GenMapInfoCB, CustomMapperCB, &RTLFunc));
Builder.restoreIP(AfterIP);
CallInst *TargetDataCall = dyn_cast<CallInst>(&BB->back());
EXPECT_NE(TargetDataCall, nullptr);
EXPECT_EQ(TargetDataCall->arg_size(), 9U);
EXPECT_EQ(TargetDataCall->getCalledFunction()->getName(),
"__tgt_target_data_end_mapper");
EXPECT_TRUE(TargetDataCall->getOperand(1)->getType()->isIntegerTy(64));
EXPECT_TRUE(TargetDataCall->getOperand(2)->getType()->isIntegerTy(32));
EXPECT_TRUE(TargetDataCall->getOperand(8)->getType()->isPointerTy());
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, TargetDataRegion) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
int64_t DeviceID = 2;
AllocaInst *Val1 =
Builder.CreateAlloca(Builder.getInt32Ty(), Builder.getInt64(1));
ASSERT_NE(Val1, nullptr);
AllocaInst *Val2 = Builder.CreateAlloca(Builder.getPtrTy());
ASSERT_NE(Val2, nullptr);
AllocaInst *Val3 = Builder.CreateAlloca(Builder.getPtrTy());
ASSERT_NE(Val3, nullptr);
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
using DeviceInfoTy = llvm::OpenMPIRBuilder::DeviceInfoTy;
llvm::OpenMPIRBuilder::MapInfosTy CombinedInfo;
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
auto GenMapInfoCB =
[&](InsertPointTy codeGenIP) -> llvm::OpenMPIRBuilder::MapInfosTy & {
// Get map clause information.
Builder.restoreIP(codeGenIP);
uint32_t temp;
CombinedInfo.BasePointers.emplace_back(Val1);
CombinedInfo.Pointers.emplace_back(Val1);
CombinedInfo.DevicePointers.emplace_back(DeviceInfoTy::None);
CombinedInfo.Sizes.emplace_back(Builder.getInt64(4));
CombinedInfo.Types.emplace_back(llvm::omp::OpenMPOffloadMappingFlags(3));
CombinedInfo.Names.emplace_back(
OMPBuilder.getOrCreateSrcLocStr("unknown", temp));
CombinedInfo.BasePointers.emplace_back(Val2);
CombinedInfo.Pointers.emplace_back(Val2);
CombinedInfo.DevicePointers.emplace_back(DeviceInfoTy::Pointer);
CombinedInfo.Sizes.emplace_back(Builder.getInt64(8));
CombinedInfo.Types.emplace_back(llvm::omp::OpenMPOffloadMappingFlags(67));
CombinedInfo.Names.emplace_back(
OMPBuilder.getOrCreateSrcLocStr("unknown", temp));
CombinedInfo.BasePointers.emplace_back(Val3);
CombinedInfo.Pointers.emplace_back(Val3);
CombinedInfo.DevicePointers.emplace_back(DeviceInfoTy::Address);
CombinedInfo.Sizes.emplace_back(Builder.getInt64(8));
CombinedInfo.Types.emplace_back(llvm::omp::OpenMPOffloadMappingFlags(67));
CombinedInfo.Names.emplace_back(
OMPBuilder.getOrCreateSrcLocStr("unknown", temp));
return CombinedInfo;
};
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/true,
/*SeparateBeginEndCalls=*/true);
OMPBuilder.Config.setIsGPU(true);
using BodyGenTy = llvm::OpenMPIRBuilder::BodyGenTy;
auto BodyCB = [&](InsertPointTy CodeGenIP, BodyGenTy BodyGenType) {
if (BodyGenType == BodyGenTy::Priv) {
EXPECT_EQ(Info.DevicePtrInfoMap.size(), 2u);
Builder.restoreIP(CodeGenIP);
CallInst *TargetDataCall =
dyn_cast<CallInst>(BB->back().getPrevNode()->getPrevNode());
EXPECT_NE(TargetDataCall, nullptr);
EXPECT_EQ(TargetDataCall->arg_size(), 9U);
EXPECT_EQ(TargetDataCall->getCalledFunction()->getName(),
"__tgt_target_data_begin_mapper");
EXPECT_TRUE(TargetDataCall->getOperand(1)->getType()->isIntegerTy(64));
EXPECT_TRUE(TargetDataCall->getOperand(2)->getType()->isIntegerTy(32));
EXPECT_TRUE(TargetDataCall->getOperand(8)->getType()->isPointerTy());
LoadInst *LI = dyn_cast<LoadInst>(BB->back().getPrevNode());
EXPECT_NE(LI, nullptr);
StoreInst *SI = dyn_cast<StoreInst>(&BB->back());
EXPECT_NE(SI, nullptr);
EXPECT_EQ(SI->getValueOperand(), LI);
EXPECT_EQ(SI->getPointerOperand(), Info.DevicePtrInfoMap[Val2].second);
EXPECT_TRUE(isa<AllocaInst>(Info.DevicePtrInfoMap[Val2].second));
EXPECT_TRUE(isa<GetElementPtrInst>(Info.DevicePtrInfoMap[Val3].second));
Builder.CreateStore(Builder.getInt32(99), Val1);
}
return Builder.saveIP();
};
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, TargetDataIP1,
OMPBuilder.createTargetData(Loc, AllocaIP, Builder.saveIP(), {},
Builder.getInt64(DeviceID),
/* IfCond= */ nullptr, Info, GenMapInfoCB,
CustomMapperCB, nullptr, BodyCB));
Builder.restoreIP(TargetDataIP1);
CallInst *TargetDataCall = dyn_cast<CallInst>(&BB->back());
EXPECT_NE(TargetDataCall, nullptr);
EXPECT_EQ(TargetDataCall->arg_size(), 9U);
EXPECT_EQ(TargetDataCall->getCalledFunction()->getName(),
"__tgt_target_data_end_mapper");
EXPECT_TRUE(TargetDataCall->getOperand(1)->getType()->isIntegerTy(64));
EXPECT_TRUE(TargetDataCall->getOperand(2)->getType()->isIntegerTy(32));
EXPECT_TRUE(TargetDataCall->getOperand(8)->getType()->isPointerTy());
// Check that BodyGenCB is still made when IsTargetDevice is set to true.
OMPBuilder.Config.setIsTargetDevice(true);
bool CheckDevicePassBodyGen = false;
auto BodyTargetCB = [&](InsertPointTy CodeGenIP, BodyGenTy BodyGenType) {
CheckDevicePassBodyGen = true;
Builder.restoreIP(CodeGenIP);
CallInst *TargetDataCall =
dyn_cast<CallInst>(BB->back().getPrevNode()->getPrevNode());
// Make sure no begin_mapper call is present for device pass.
EXPECT_EQ(TargetDataCall, nullptr);
return Builder.saveIP();
};
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, TargetDataIP2,
OMPBuilder.createTargetData(Loc, AllocaIP, Builder.saveIP(), {},
Builder.getInt64(DeviceID),
/* IfCond= */ nullptr, Info, GenMapInfoCB,
CustomMapperCB, nullptr, BodyTargetCB));
Builder.restoreIP(TargetDataIP2);
EXPECT_TRUE(CheckDevicePassBodyGen);
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
namespace {
// Some basic handling of argument mapping for the moment
void CreateDefaultMapInfos(llvm::OpenMPIRBuilder &OmpBuilder,
llvm::SmallVectorImpl<llvm::Value *> &Args,
llvm::OpenMPIRBuilder::MapInfosTy &CombinedInfo) {
for (auto Arg : Args) {
CombinedInfo.BasePointers.emplace_back(Arg);
CombinedInfo.Pointers.emplace_back(Arg);
uint32_t SrcLocStrSize;
CombinedInfo.Names.emplace_back(OmpBuilder.getOrCreateSrcLocStr(
"Unknown loc - stub implementation", SrcLocStrSize));
CombinedInfo.Types.emplace_back(llvm::omp::OpenMPOffloadMappingFlags(
llvm::omp::OpenMPOffloadMappingFlags::OMP_MAP_TO |
llvm::omp::OpenMPOffloadMappingFlags::OMP_MAP_FROM |
llvm::omp::OpenMPOffloadMappingFlags::OMP_MAP_TARGET_PARAM));
CombinedInfo.Sizes.emplace_back(OmpBuilder.Builder.getInt64(
OmpBuilder.M.getDataLayout().getTypeAllocSize(Arg->getType())));
}
}
} // namespace
TEST_F(OpenMPIRBuilderTest, TargetRegion) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
OpenMPIRBuilderConfig Config(false, false, false, false, false, false, false);
OMPBuilder.setConfig(Config);
F->setName("func");
F->addFnAttr("target-cpu", "x86-64");
F->addFnAttr("target-features", "+mmx,+sse");
IRBuilder<> Builder(BB);
auto *Int32Ty = Builder.getInt32Ty();
Builder.SetCurrentDebugLocation(DL);
AllocaInst *APtr = Builder.CreateAlloca(Int32Ty, nullptr, "a_ptr");
AllocaInst *BPtr = Builder.CreateAlloca(Int32Ty, nullptr, "b_ptr");
AllocaInst *CPtr = Builder.CreateAlloca(Int32Ty, nullptr, "c_ptr");
Builder.CreateStore(Builder.getInt32(10), APtr);
Builder.CreateStore(Builder.getInt32(20), BPtr);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) -> InsertPointTy {
IRBuilderBase::InsertPointGuard guard(Builder);
Builder.SetCurrentDebugLocation(llvm::DebugLoc());
Builder.restoreIP(CodeGenIP);
LoadInst *AVal = Builder.CreateLoad(Int32Ty, APtr);
LoadInst *BVal = Builder.CreateLoad(Int32Ty, BPtr);
Value *Sum = Builder.CreateAdd(AVal, BVal);
Builder.CreateStore(Sum, CPtr);
return Builder.saveIP();
};
llvm::SmallVector<llvm::Value *> Inputs;
Inputs.push_back(APtr);
Inputs.push_back(BPtr);
Inputs.push_back(CPtr);
auto SimpleArgAccessorCB =
[&](llvm::Argument &Arg, llvm::Value *Input, llvm::Value *&RetVal,
llvm::OpenMPIRBuilder::InsertPointTy AllocaIP,
llvm::OpenMPIRBuilder::InsertPointTy CodeGenIP) {
IRBuilderBase::InsertPointGuard guard(Builder);
Builder.SetCurrentDebugLocation(llvm::DebugLoc());
if (!OMPBuilder.Config.isTargetDevice()) {
RetVal = cast<llvm::Value>(&Arg);
return CodeGenIP;
}
Builder.restoreIP(AllocaIP);
llvm::Value *Addr = Builder.CreateAlloca(
Arg.getType()->isPointerTy()
? Arg.getType()
: Type::getInt64Ty(Builder.getContext()),
OMPBuilder.M.getDataLayout().getAllocaAddrSpace());
llvm::Value *AddrAscast =
Builder.CreatePointerBitCastOrAddrSpaceCast(Addr, Input->getType());
Builder.CreateStore(&Arg, AddrAscast);
Builder.restoreIP(CodeGenIP);
RetVal = Builder.CreateLoad(Arg.getType(), AddrAscast);
return Builder.saveIP();
};
llvm::OpenMPIRBuilder::MapInfosTy CombinedInfos;
auto GenMapInfoCB = [&](llvm::OpenMPIRBuilder::InsertPointTy codeGenIP)
-> llvm::OpenMPIRBuilder::MapInfosTy & {
CreateDefaultMapInfos(OMPBuilder, Inputs, CombinedInfos);
return CombinedInfos;
};
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
TargetRegionEntryInfo EntryInfo("func", 42, 4711, 17);
OpenMPIRBuilder::LocationDescription OmpLoc({Builder.saveIP(), DL});
OpenMPIRBuilder::TargetKernelRuntimeAttrs RuntimeAttrs;
OpenMPIRBuilder::TargetKernelDefaultAttrs DefaultAttrs = {
/*ExecFlags=*/omp::OMPTgtExecModeFlags::OMP_TGT_EXEC_MODE_GENERIC,
/*MaxTeams=*/{10}, /*MinTeams=*/0, /*MaxThreads=*/{0}, /*MinThreads=*/0};
RuntimeAttrs.TargetThreadLimit[0] = Builder.getInt32(20);
RuntimeAttrs.TeamsThreadLimit[0] = Builder.getInt32(30);
RuntimeAttrs.MaxThreads = Builder.getInt32(40);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTarget(OmpLoc, /*IsOffloadEntry=*/true, Builder.saveIP(),
Builder.saveIP(), {}, Info, EntryInfo,
DefaultAttrs, RuntimeAttrs, /*IfCond=*/nullptr,
Inputs, GenMapInfoCB, BodyGenCB,
SimpleArgAccessorCB, CustomMapperCB, {}, false));
EXPECT_EQ(DL, Builder.getCurrentDebugLocation());
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check the kernel launch sequence
auto Iter = F->getEntryBlock().rbegin();
EXPECT_TRUE(isa<BranchInst>(&*(Iter)));
BranchInst *Branch = dyn_cast<BranchInst>(&*(Iter));
EXPECT_TRUE(isa<CmpInst>(&*(++Iter)));
EXPECT_TRUE(isa<CallInst>(&*(++Iter)));
CallInst *Call = dyn_cast<CallInst>(&*(Iter));
// Check that the kernel launch function is called
Function *KernelLaunchFunc = Call->getCalledFunction();
EXPECT_NE(KernelLaunchFunc, nullptr);
StringRef FunctionName = KernelLaunchFunc->getName();
EXPECT_TRUE(FunctionName.starts_with("__tgt_target_kernel"));
// Check num_teams and num_threads in call arguments
EXPECT_TRUE(Call->arg_size() >= 4);
Value *NumTeamsArg = Call->getArgOperand(2);
EXPECT_TRUE(isa<ConstantInt>(NumTeamsArg));
EXPECT_EQ(10U, cast<ConstantInt>(NumTeamsArg)->getZExtValue());
Value *NumThreadsArg = Call->getArgOperand(3);
EXPECT_TRUE(isa<ConstantInt>(NumThreadsArg));
EXPECT_EQ(20U, cast<ConstantInt>(NumThreadsArg)->getZExtValue());
// Check num_teams and num_threads kernel arguments (use number 5 starting
// from the end and counting the call to __tgt_target_kernel as the first use)
Value *KernelArgs = Call->getArgOperand(Call->arg_size() - 1);
EXPECT_TRUE(KernelArgs->hasNUsesOrMore(4));
Value *NumTeamsGetElemPtr = *std::next(KernelArgs->user_begin(), 3);
EXPECT_TRUE(isa<GetElementPtrInst>(NumTeamsGetElemPtr));
Value *NumTeamsStore = NumTeamsGetElemPtr->getUniqueUndroppableUser();
EXPECT_TRUE(isa<StoreInst>(NumTeamsStore));
Value *NumTeamsStoreArg = cast<StoreInst>(NumTeamsStore)->getValueOperand();
EXPECT_TRUE(isa<ConstantDataSequential>(NumTeamsStoreArg));
auto *NumTeamsStoreValue = cast<ConstantDataSequential>(NumTeamsStoreArg);
EXPECT_EQ(3U, NumTeamsStoreValue->getNumElements());
EXPECT_EQ(10U, NumTeamsStoreValue->getElementAsInteger(0));
EXPECT_EQ(0U, NumTeamsStoreValue->getElementAsInteger(1));
EXPECT_EQ(0U, NumTeamsStoreValue->getElementAsInteger(2));
Value *NumThreadsGetElemPtr = *std::next(KernelArgs->user_begin(), 2);
EXPECT_TRUE(isa<GetElementPtrInst>(NumThreadsGetElemPtr));
Value *NumThreadsStore = NumThreadsGetElemPtr->getUniqueUndroppableUser();
EXPECT_TRUE(isa<StoreInst>(NumThreadsStore));
Value *NumThreadsStoreArg =
cast<StoreInst>(NumThreadsStore)->getValueOperand();
EXPECT_TRUE(isa<ConstantDataSequential>(NumThreadsStoreArg));
auto *NumThreadsStoreValue = cast<ConstantDataSequential>(NumThreadsStoreArg);
EXPECT_EQ(3U, NumThreadsStoreValue->getNumElements());
EXPECT_EQ(20U, NumThreadsStoreValue->getElementAsInteger(0));
EXPECT_EQ(0U, NumThreadsStoreValue->getElementAsInteger(1));
EXPECT_EQ(0U, NumThreadsStoreValue->getElementAsInteger(2));
// Check the fallback call
BasicBlock *FallbackBlock = Branch->getSuccessor(0);
Iter = FallbackBlock->rbegin();
CallInst *FCall = dyn_cast<CallInst>(&*(++Iter));
// 'F' has a dummy DISubprogram which causes OutlinedFunc to also
// have a DISubprogram. In this case, the call to OutlinedFunc needs
// to have a debug loc, otherwise verifier will complain.
FCall->setDebugLoc(DL);
EXPECT_NE(FCall, nullptr);
// Check that the correct aguments are passed in
for (auto ArgInput : zip(FCall->args(), Inputs)) {
EXPECT_EQ(std::get<0>(ArgInput), std::get<1>(ArgInput));
}
// Check that the outlined function exists with the expected prefix
Function *OutlinedFunc = FCall->getCalledFunction();
EXPECT_NE(OutlinedFunc, nullptr);
StringRef FunctionName2 = OutlinedFunc->getName();
EXPECT_TRUE(FunctionName2.starts_with("__omp_offloading"));
// Check that target-cpu and target-features were propagated to the outlined
// function
EXPECT_EQ(OutlinedFunc->getFnAttribute("target-cpu"),
F->getFnAttribute("target-cpu"));
EXPECT_EQ(OutlinedFunc->getFnAttribute("target-features"),
F->getFnAttribute("target-features"));
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, TargetRegionDevice) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.setConfig(
OpenMPIRBuilderConfig(true, false, false, false, false, false, false));
OMPBuilder.initialize();
F->setName("func");
F->addFnAttr("target-cpu", "gfx90a");
F->addFnAttr("target-features", "+gfx9-insts,+wavefrontsize64");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Builder.SetCurrentDebugLocation(DL);
LoadInst *Value = nullptr;
StoreInst *TargetStore = nullptr;
llvm::SmallVector<llvm::Value *, 2> CapturedArgs = {
Constant::getNullValue(PointerType::get(Ctx, 0)),
Constant::getNullValue(PointerType::get(Ctx, 0))};
auto SimpleArgAccessorCB =
[&](llvm::Argument &Arg, llvm::Value *Input, llvm::Value *&RetVal,
llvm::OpenMPIRBuilder::InsertPointTy AllocaIP,
llvm::OpenMPIRBuilder::InsertPointTy CodeGenIP) {
IRBuilderBase::InsertPointGuard guard(Builder);
Builder.SetCurrentDebugLocation(llvm::DebugLoc());
if (!OMPBuilder.Config.isTargetDevice()) {
RetVal = cast<llvm::Value>(&Arg);
return CodeGenIP;
}
Builder.restoreIP(AllocaIP);
llvm::Value *Addr = Builder.CreateAlloca(
Arg.getType()->isPointerTy()
? Arg.getType()
: Type::getInt64Ty(Builder.getContext()),
OMPBuilder.M.getDataLayout().getAllocaAddrSpace());
llvm::Value *AddrAscast =
Builder.CreatePointerBitCastOrAddrSpaceCast(Addr, Input->getType());
Builder.CreateStore(&Arg, AddrAscast);
Builder.restoreIP(CodeGenIP);
RetVal = Builder.CreateLoad(Arg.getType(), AddrAscast);
return Builder.saveIP();
};
llvm::OpenMPIRBuilder::MapInfosTy CombinedInfos;
auto GenMapInfoCB = [&](llvm::OpenMPIRBuilder::InsertPointTy codeGenIP)
-> llvm::OpenMPIRBuilder::MapInfosTy & {
CreateDefaultMapInfos(OMPBuilder, CapturedArgs, CombinedInfos);
return CombinedInfos;
};
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
auto BodyGenCB = [&](OpenMPIRBuilder::InsertPointTy AllocIP,
OpenMPIRBuilder::InsertPointTy CodeGenIP,
ArrayRef<OpenMPIRBuilder::InsertPointTy> DeallocIPs)
-> OpenMPIRBuilder::InsertPointTy {
IRBuilderBase::InsertPointGuard guard(Builder);
Builder.SetCurrentDebugLocation(llvm::DebugLoc());
Builder.restoreIP(CodeGenIP);
Value = Builder.CreateLoad(Type::getInt32Ty(Ctx), CapturedArgs[0]);
TargetStore = Builder.CreateStore(Value, CapturedArgs[1]);
return Builder.saveIP();
};
IRBuilder<>::InsertPoint EntryIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
TargetRegionEntryInfo EntryInfo("parent", /*DeviceID=*/1, /*FileID=*/2,
/*Line=*/3, /*Count=*/0);
OpenMPIRBuilder::TargetKernelRuntimeAttrs RuntimeAttrs;
OpenMPIRBuilder::TargetKernelDefaultAttrs DefaultAttrs = {
/*ExecFlags=*/omp::OMPTgtExecModeFlags::OMP_TGT_EXEC_MODE_GENERIC,
/*MaxTeams=*/{-1}, /*MinTeams=*/0, /*MaxThreads=*/{0}, /*MinThreads=*/0};
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTarget(Loc, /*IsOffloadEntry=*/true, EntryIP, EntryIP,
{}, Info, EntryInfo, DefaultAttrs, RuntimeAttrs,
/*IfCond=*/nullptr, CapturedArgs, GenMapInfoCB,
BodyGenCB, SimpleArgAccessorCB, CustomMapperCB,
{}, false));
EXPECT_EQ(DL, Builder.getCurrentDebugLocation());
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
// Check outlined function
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(TargetStore, nullptr);
Function *OutlinedFn = TargetStore->getFunction();
EXPECT_NE(F, OutlinedFn);
// Check that target-cpu and target-features were propagated to the outlined
// function
EXPECT_EQ(OutlinedFn->getFnAttribute("target-cpu"),
F->getFnAttribute("target-cpu"));
EXPECT_EQ(OutlinedFn->getFnAttribute("target-features"),
F->getFnAttribute("target-features"));
EXPECT_TRUE(OutlinedFn->hasWeakODRLinkage());
// Account for the "implicit" first argument.
EXPECT_EQ(OutlinedFn->getName(), "__omp_offloading_1_2_parent_l3");
EXPECT_EQ(OutlinedFn->arg_size(), 3U);
EXPECT_TRUE(OutlinedFn->getArg(1)->getType()->isPointerTy());
EXPECT_TRUE(OutlinedFn->getArg(2)->getType()->isPointerTy());
// Check entry block
auto &EntryBlock = OutlinedFn->getEntryBlock();
Instruction *Alloca1 = &*EntryBlock.getFirstNonPHIIt();
EXPECT_NE(Alloca1, nullptr);
EXPECT_TRUE(isa<AllocaInst>(Alloca1));
auto *Store1 = Alloca1->getNextNode();
EXPECT_TRUE(isa<StoreInst>(Store1));
auto *Alloca2 = Store1->getNextNode();
EXPECT_TRUE(isa<AllocaInst>(Alloca2));
auto *Store2 = Alloca2->getNextNode();
EXPECT_TRUE(isa<StoreInst>(Store2));
auto *InitCall = dyn_cast<CallInst>(Store2->getNextNode());
EXPECT_NE(InitCall, nullptr);
EXPECT_EQ(InitCall->getCalledFunction()->getName(), "__kmpc_target_init");
EXPECT_EQ(InitCall->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(InitCall->getArgOperand(0)));
auto *KernelEnvGV = cast<GlobalVariable>(InitCall->getArgOperand(0));
EXPECT_TRUE(isa<ConstantStruct>(KernelEnvGV->getInitializer()));
auto *KernelEnvC = cast<ConstantStruct>(KernelEnvGV->getInitializer());
EXPECT_TRUE(isa<ConstantStruct>(KernelEnvC->getAggregateElement(0U)));
auto ConfigC = cast<ConstantStruct>(KernelEnvC->getAggregateElement(0U));
EXPECT_EQ(ConfigC->getAggregateElement(0U),
ConstantInt::get(Type::getInt8Ty(Ctx), true));
EXPECT_EQ(ConfigC->getAggregateElement(1U),
ConstantInt::get(Type::getInt8Ty(Ctx), true));
EXPECT_EQ(ConfigC->getAggregateElement(2U),
ConstantInt::get(Type::getInt8Ty(Ctx), OMP_TGT_EXEC_MODE_GENERIC));
auto *EntryBlockBranch = EntryBlock.getTerminator();
EXPECT_NE(EntryBlockBranch, nullptr);
EXPECT_EQ(EntryBlockBranch->getNumSuccessors(), 2U);
// Check user code block
auto *UserCodeBlock = EntryBlockBranch->getSuccessor(0);
EXPECT_EQ(UserCodeBlock->getName(), "user_code.entry");
Instruction *Load1 = &*UserCodeBlock->getFirstNonPHIIt();
EXPECT_TRUE(isa<LoadInst>(Load1));
auto *Load2 = Load1->getNextNode();
EXPECT_TRUE(isa<LoadInst>(Load2));
auto *OutlinedBlockBr = Load2->getNextNode();
EXPECT_TRUE(isa<BranchInst>(OutlinedBlockBr));
auto *OutlinedBlock = OutlinedBlockBr->getSuccessor(0);
EXPECT_EQ(OutlinedBlock->getName(), "outlined.body");
Instruction *Value1 = &*OutlinedBlock->getFirstNonPHIIt();
EXPECT_EQ(Value1, Value);
EXPECT_EQ(Value1->getNextNode(), TargetStore);
auto *TargetExitBlockBr = TargetStore->getNextNode();
EXPECT_TRUE(isa<BranchInst>(TargetExitBlockBr));
auto *TargetExitBlock = TargetExitBlockBr->getSuccessor(0);
EXPECT_EQ(TargetExitBlock->getName(), "target.exit");
Instruction *Deinit = &*TargetExitBlock->getFirstNonPHIIt();
EXPECT_NE(Deinit, nullptr);
auto *DeinitCall = dyn_cast<CallInst>(Deinit);
EXPECT_NE(DeinitCall, nullptr);
EXPECT_EQ(DeinitCall->getCalledFunction()->getName(), "__kmpc_target_deinit");
EXPECT_EQ(DeinitCall->arg_size(), 0U);
EXPECT_TRUE(isa<ReturnInst>(DeinitCall->getNextNode()));
// Check exit block
auto *ExitBlock = EntryBlockBranch->getSuccessor(1);
EXPECT_EQ(ExitBlock->getName(), "worker.exit");
EXPECT_TRUE(isa<ReturnInst>(ExitBlock->getFirstNonPHIIt()));
// Check global exec_mode.
GlobalVariable *Used = M->getGlobalVariable("llvm.compiler.used");
EXPECT_NE(Used, nullptr);
Constant *UsedInit = Used->getInitializer();
EXPECT_NE(UsedInit, nullptr);
EXPECT_TRUE(isa<ConstantArray>(UsedInit));
auto *UsedInitData = cast<ConstantArray>(UsedInit);
EXPECT_EQ(1U, UsedInitData->getNumOperands());
Constant *ExecMode = UsedInitData->getOperand(0);
EXPECT_TRUE(isa<GlobalVariable>(ExecMode));
Constant *ExecModeValue = cast<GlobalVariable>(ExecMode)->getInitializer();
EXPECT_NE(ExecModeValue, nullptr);
EXPECT_TRUE(isa<ConstantInt>(ExecModeValue));
EXPECT_EQ(OMP_TGT_EXEC_MODE_GENERIC,
cast<ConstantInt>(ExecModeValue)->getZExtValue());
}
TEST_F(OpenMPIRBuilderTest, TargetRegionSPMD) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
OpenMPIRBuilderConfig Config(/*IsTargetDevice=*/false, /*IsGPU=*/false,
/*OpenMPOffloadMandatory=*/false,
/*HasRequiresReverseOffload=*/false,
/*HasRequiresUnifiedAddress=*/false,
/*HasRequiresUnifiedSharedMemory=*/false,
/*HasRequiresDynamicAllocators=*/false);
OMPBuilder.setConfig(Config);
F->setName("func");
IRBuilder<> Builder(BB);
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
auto BodyGenCB = [&](InsertPointTy, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy>) -> InsertPointTy {
Builder.restoreIP(CodeGenIP);
return Builder.saveIP();
};
auto SimpleArgAccessorCB = [&](Argument &, Value *, Value *&,
OpenMPIRBuilder::InsertPointTy,
OpenMPIRBuilder::InsertPointTy CodeGenIP) {
Builder.restoreIP(CodeGenIP);
return Builder.saveIP();
};
SmallVector<Value *> Inputs;
OpenMPIRBuilder::MapInfosTy CombinedInfos;
auto GenMapInfoCB =
[&](OpenMPIRBuilder::InsertPointTy) -> OpenMPIRBuilder::MapInfosTy & {
return CombinedInfos;
};
TargetRegionEntryInfo EntryInfo("func", 42, 4711, 17);
OpenMPIRBuilder::LocationDescription OmpLoc({Builder.saveIP(), DL});
OpenMPIRBuilder::TargetKernelRuntimeAttrs RuntimeAttrs;
OpenMPIRBuilder::TargetKernelDefaultAttrs DefaultAttrs = {
/*ExecFlags=*/omp::OMPTgtExecModeFlags::OMP_TGT_EXEC_MODE_SPMD,
/*MaxTeams=*/{-1}, /*MinTeams=*/0, /*MaxThreads=*/{0}, /*MinThreads=*/0};
RuntimeAttrs.LoopTripCount = Builder.getInt64(1000);
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTarget(OmpLoc, /*IsOffloadEntry=*/true, Builder.saveIP(),
Builder.saveIP(), {}, Info, EntryInfo,
DefaultAttrs, RuntimeAttrs, /*IfCond=*/nullptr,
Inputs, GenMapInfoCB, BodyGenCB,
SimpleArgAccessorCB, CustomMapperCB, {}));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check the kernel launch sequence
auto Iter = F->getEntryBlock().rbegin();
EXPECT_TRUE(isa<BranchInst>(&*(Iter)));
BranchInst *Branch = dyn_cast<BranchInst>(&*(Iter));
EXPECT_TRUE(isa<CmpInst>(&*(++Iter)));
EXPECT_TRUE(isa<CallInst>(&*(++Iter)));
CallInst *Call = dyn_cast<CallInst>(&*(Iter));
// Check that the kernel launch function is called
Function *KernelLaunchFunc = Call->getCalledFunction();
EXPECT_NE(KernelLaunchFunc, nullptr);
StringRef FunctionName = KernelLaunchFunc->getName();
EXPECT_TRUE(FunctionName.starts_with("__tgt_target_kernel"));
// Check the trip count kernel argument (use number 5 starting from the end
// and counting the call to __tgt_target_kernel as the first use)
Value *KernelArgs = Call->getArgOperand(Call->arg_size() - 1);
EXPECT_TRUE(KernelArgs->hasNUsesOrMore(6));
Value *TripCountGetElemPtr = *std::next(KernelArgs->user_begin(), 5);
EXPECT_TRUE(isa<GetElementPtrInst>(TripCountGetElemPtr));
Value *TripCountStore = TripCountGetElemPtr->getUniqueUndroppableUser();
EXPECT_TRUE(isa<StoreInst>(TripCountStore));
Value *TripCountStoreArg = cast<StoreInst>(TripCountStore)->getValueOperand();
EXPECT_TRUE(isa<ConstantInt>(TripCountStoreArg));
EXPECT_EQ(1000U, cast<ConstantInt>(TripCountStoreArg)->getZExtValue());
// Check the fallback call
BasicBlock *FallbackBlock = Branch->getSuccessor(0);
Iter = FallbackBlock->rbegin();
CallInst *FCall = dyn_cast<CallInst>(&*(++Iter));
// 'F' has a dummy DISubprogram which causes OutlinedFunc to also
// have a DISubprogram. In this case, the call to OutlinedFunc needs
// to have a debug loc, otherwise verifier will complain.
FCall->setDebugLoc(DL);
EXPECT_NE(FCall, nullptr);
// Check that the outlined function exists with the expected prefix
Function *OutlinedFunc = FCall->getCalledFunction();
EXPECT_NE(OutlinedFunc, nullptr);
StringRef FunctionName2 = OutlinedFunc->getName();
EXPECT_TRUE(FunctionName2.starts_with("__omp_offloading"));
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, TargetRegionDeviceSPMD) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.setConfig(
OpenMPIRBuilderConfig(/*IsTargetDevice=*/true, /*IsGPU=*/false,
/*OpenMPOffloadMandatory=*/false,
/*HasRequiresReverseOffload=*/false,
/*HasRequiresUnifiedAddress=*/false,
/*HasRequiresUnifiedSharedMemory=*/false,
/*HasRequiresDynamicAllocators=*/false));
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Function *OutlinedFn = nullptr;
SmallVector<Value *> CapturedArgs;
auto SimpleArgAccessorCB = [&](Argument &, Value *, Value *&,
OpenMPIRBuilder::InsertPointTy,
OpenMPIRBuilder::InsertPointTy CodeGenIP) {
Builder.restoreIP(CodeGenIP);
return Builder.saveIP();
};
OpenMPIRBuilder::MapInfosTy CombinedInfos;
auto GenMapInfoCB =
[&](OpenMPIRBuilder::InsertPointTy) -> OpenMPIRBuilder::MapInfosTy & {
return CombinedInfos;
};
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
auto BodyGenCB = [&](OpenMPIRBuilder::InsertPointTy,
OpenMPIRBuilder::InsertPointTy CodeGenIP,
ArrayRef<OpenMPIRBuilder::InsertPointTy>)
-> OpenMPIRBuilder::InsertPointTy {
Builder.restoreIP(CodeGenIP);
OutlinedFn = CodeGenIP.getBlock()->getParent();
return Builder.saveIP();
};
IRBuilder<>::InsertPoint EntryIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
TargetRegionEntryInfo EntryInfo("parent", /*DeviceID=*/1, /*FileID=*/2,
/*Line=*/3, /*Count=*/0);
OpenMPIRBuilder::TargetKernelRuntimeAttrs RuntimeAttrs;
OpenMPIRBuilder::TargetKernelDefaultAttrs DefaultAttrs = {
/*ExecFlags=*/omp::OMPTgtExecModeFlags::OMP_TGT_EXEC_MODE_SPMD,
/*MaxTeams=*/{-1}, /*MinTeams=*/0, /*MaxThreads=*/{0}, /*MinThreads=*/0};
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTarget(
Loc, /*IsOffloadEntry=*/true, EntryIP, EntryIP, {},
Info, EntryInfo, DefaultAttrs, RuntimeAttrs,
/*IfCond=*/nullptr, CapturedArgs, GenMapInfoCB,
BodyGenCB, SimpleArgAccessorCB, CustomMapperCB, {}));
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
// Check outlined function
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(OutlinedFn, nullptr);
EXPECT_NE(F, OutlinedFn);
// Check that target-cpu and target-features were propagated to the outlined
// function
EXPECT_EQ(OutlinedFn->getFnAttribute("target-cpu"),
F->getFnAttribute("target-cpu"));
EXPECT_EQ(OutlinedFn->getFnAttribute("target-features"),
F->getFnAttribute("target-features"));
EXPECT_TRUE(OutlinedFn->hasWeakODRLinkage());
// Account for the "implicit" first argument.
EXPECT_EQ(OutlinedFn->getName(), "__omp_offloading_1_2_parent_l3");
EXPECT_EQ(OutlinedFn->arg_size(), 1U);
// Check global exec_mode.
GlobalVariable *Used = M->getGlobalVariable("llvm.compiler.used");
EXPECT_NE(Used, nullptr);
Constant *UsedInit = Used->getInitializer();
EXPECT_NE(UsedInit, nullptr);
EXPECT_TRUE(isa<ConstantArray>(UsedInit));
auto *UsedInitData = cast<ConstantArray>(UsedInit);
EXPECT_EQ(1U, UsedInitData->getNumOperands());
Constant *ExecMode = UsedInitData->getOperand(0);
EXPECT_TRUE(isa<GlobalVariable>(ExecMode));
Constant *ExecModeValue = cast<GlobalVariable>(ExecMode)->getInitializer();
EXPECT_NE(ExecModeValue, nullptr);
EXPECT_TRUE(isa<ConstantInt>(ExecModeValue));
EXPECT_EQ(OMP_TGT_EXEC_MODE_SPMD,
cast<ConstantInt>(ExecModeValue)->getZExtValue());
}
TEST_F(OpenMPIRBuilderTest, ConstantAllocaRaise) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.setConfig(
OpenMPIRBuilderConfig(true, false, false, false, false, false, false));
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Builder.SetCurrentDebugLocation(DL);
LoadInst *Value = nullptr;
StoreInst *TargetStore = nullptr;
llvm::SmallVector<llvm::Value *, 1> CapturedArgs = {
Constant::getNullValue(PointerType::get(Ctx, 0))};
auto SimpleArgAccessorCB =
[&](llvm::Argument &Arg, llvm::Value *Input, llvm::Value *&RetVal,
llvm::OpenMPIRBuilder::InsertPointTy AllocaIP,
llvm::OpenMPIRBuilder::InsertPointTy CodeGenIP) {
IRBuilderBase::InsertPointGuard guard(Builder);
Builder.SetCurrentDebugLocation(llvm::DebugLoc());
if (!OMPBuilder.Config.isTargetDevice()) {
RetVal = cast<llvm::Value>(&Arg);
return CodeGenIP;
}
Builder.restoreIP(AllocaIP);
llvm::Value *Addr = Builder.CreateAlloca(
Arg.getType()->isPointerTy()
? Arg.getType()
: Type::getInt64Ty(Builder.getContext()),
OMPBuilder.M.getDataLayout().getAllocaAddrSpace());
llvm::Value *AddrAscast =
Builder.CreatePointerBitCastOrAddrSpaceCast(Addr, Input->getType());
Builder.CreateStore(&Arg, AddrAscast);
Builder.restoreIP(CodeGenIP);
RetVal = Builder.CreateLoad(Arg.getType(), AddrAscast);
return Builder.saveIP();
};
llvm::OpenMPIRBuilder::MapInfosTy CombinedInfos;
auto GenMapInfoCB = [&](llvm::OpenMPIRBuilder::InsertPointTy codeGenIP)
-> llvm::OpenMPIRBuilder::MapInfosTy & {
CreateDefaultMapInfos(OMPBuilder, CapturedArgs, CombinedInfos);
return CombinedInfos;
};
llvm::Value *RaiseAlloca = nullptr;
auto CustomMapperCB = [&](unsigned int I) { return nullptr; };
auto BodyGenCB = [&](OpenMPIRBuilder::InsertPointTy AllocIP,
OpenMPIRBuilder::InsertPointTy CodeGenIP,
ArrayRef<OpenMPIRBuilder::InsertPointTy> DeallocIPs)
-> OpenMPIRBuilder::InsertPointTy {
IRBuilderBase::InsertPointGuard guard(Builder);
Builder.SetCurrentDebugLocation(llvm::DebugLoc());
Builder.restoreIP(CodeGenIP);
RaiseAlloca = Builder.CreateAlloca(Builder.getInt32Ty());
Value = Builder.CreateLoad(Type::getInt32Ty(Ctx), CapturedArgs[0]);
TargetStore = Builder.CreateStore(Value, RaiseAlloca);
return Builder.saveIP();
};
IRBuilder<>::InsertPoint EntryIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
TargetRegionEntryInfo EntryInfo("parent", /*DeviceID=*/1, /*FileID=*/2,
/*Line=*/3, /*Count=*/0);
OpenMPIRBuilder::TargetKernelRuntimeAttrs RuntimeAttrs;
OpenMPIRBuilder::TargetKernelDefaultAttrs DefaultAttrs = {
/*ExecFlags=*/omp::OMPTgtExecModeFlags::OMP_TGT_EXEC_MODE_GENERIC,
/*MaxTeams=*/{-1}, /*MinTeams=*/0, /*MaxThreads=*/{0}, /*MinThreads=*/0};
llvm::OpenMPIRBuilder::TargetDataInfo Info(
/*RequiresDevicePointerInfo=*/false,
/*SeparateBeginEndCalls=*/true);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTarget(Loc, /*IsOffloadEntry=*/true, EntryIP, EntryIP,
{}, Info, EntryInfo, DefaultAttrs, RuntimeAttrs,
/*IfCond=*/nullptr, CapturedArgs, GenMapInfoCB,
BodyGenCB, SimpleArgAccessorCB, CustomMapperCB,
{}, false));
EXPECT_EQ(DL, Builder.getCurrentDebugLocation());
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
// Check outlined function
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(TargetStore, nullptr);
Function *OutlinedFn = TargetStore->getFunction();
EXPECT_NE(F, OutlinedFn);
EXPECT_TRUE(OutlinedFn->hasWeakODRLinkage());
// Account for the "implicit" first argument.
EXPECT_EQ(OutlinedFn->getName(), "__omp_offloading_1_2_parent_l3");
EXPECT_EQ(OutlinedFn->arg_size(), 2U);
EXPECT_TRUE(OutlinedFn->getArg(1)->getType()->isPointerTy());
// Check entry block, to see if we have raised our alloca
// from the body to the entry block.
auto &EntryBlock = OutlinedFn->getEntryBlock();
// Check that we have moved our alloca created in the
// BodyGenCB function, to the top of the function.
Instruction *Alloca1 = &*EntryBlock.getFirstNonPHIIt();
EXPECT_NE(Alloca1, nullptr);
EXPECT_TRUE(isa<AllocaInst>(Alloca1));
EXPECT_EQ(Alloca1, RaiseAlloca);
// Verify we have not altered the rest of the function
// inappropriately with our alloca movement.
auto *Alloca2 = Alloca1->getNextNode();
EXPECT_TRUE(isa<AllocaInst>(Alloca2));
auto *Store2 = Alloca2->getNextNode();
EXPECT_TRUE(isa<StoreInst>(Store2));
auto *InitCall = dyn_cast<CallInst>(Store2->getNextNode());
EXPECT_NE(InitCall, nullptr);
EXPECT_EQ(InitCall->getCalledFunction()->getName(), "__kmpc_target_init");
EXPECT_EQ(InitCall->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(InitCall->getArgOperand(0)));
auto *KernelEnvGV = cast<GlobalVariable>(InitCall->getArgOperand(0));
EXPECT_TRUE(isa<ConstantStruct>(KernelEnvGV->getInitializer()));
auto *KernelEnvC = cast<ConstantStruct>(KernelEnvGV->getInitializer());
EXPECT_TRUE(isa<ConstantStruct>(KernelEnvC->getAggregateElement(0U)));
auto *ConfigC = cast<ConstantStruct>(KernelEnvC->getAggregateElement(0U));
EXPECT_EQ(ConfigC->getAggregateElement(0U),
ConstantInt::get(Type::getInt8Ty(Ctx), true));
EXPECT_EQ(ConfigC->getAggregateElement(1U),
ConstantInt::get(Type::getInt8Ty(Ctx), true));
EXPECT_EQ(ConfigC->getAggregateElement(2U),
ConstantInt::get(Type::getInt8Ty(Ctx), OMP_TGT_EXEC_MODE_GENERIC));
auto *EntryBlockBranch = EntryBlock.getTerminator();
EXPECT_NE(EntryBlockBranch, nullptr);
EXPECT_EQ(EntryBlockBranch->getNumSuccessors(), 2U);
// Check user code block
auto *UserCodeBlock = EntryBlockBranch->getSuccessor(0);
EXPECT_EQ(UserCodeBlock->getName(), "user_code.entry");
BasicBlock::iterator Load1 = UserCodeBlock->getFirstNonPHIIt();
EXPECT_TRUE(isa<LoadInst>(Load1));
auto *OutlinedBlockBr = Load1->getNextNode();
EXPECT_TRUE(isa<BranchInst>(OutlinedBlockBr));
auto *OutlinedBlock = OutlinedBlockBr->getSuccessor(0);
EXPECT_EQ(OutlinedBlock->getName(), "outlined.body");
Instruction *Load2 = &*OutlinedBlock->getFirstNonPHIIt();
EXPECT_TRUE(isa<LoadInst>(Load2));
EXPECT_EQ(Load2, Value);
EXPECT_EQ(Load2->getNextNode(), TargetStore);
auto *TargetExitBlockBr = TargetStore->getNextNode();
EXPECT_TRUE(isa<BranchInst>(TargetExitBlockBr));
auto *TargetExitBlock = TargetExitBlockBr->getSuccessor(0);
EXPECT_EQ(TargetExitBlock->getName(), "target.exit");
Instruction *Deinit = &*TargetExitBlock->getFirstNonPHIIt();
EXPECT_NE(Deinit, nullptr);
auto *DeinitCall = dyn_cast<CallInst>(Deinit);
EXPECT_NE(DeinitCall, nullptr);
EXPECT_EQ(DeinitCall->getCalledFunction()->getName(), "__kmpc_target_deinit");
EXPECT_EQ(DeinitCall->arg_size(), 0U);
EXPECT_TRUE(isa<ReturnInst>(DeinitCall->getNextNode()));
// Check exit block
auto *ExitBlock = EntryBlockBranch->getSuccessor(1);
EXPECT_EQ(ExitBlock->getName(), "worker.exit");
EXPECT_TRUE(isa<ReturnInst>(ExitBlock->getFirstNonPHIIt()));
}
TEST_F(OpenMPIRBuilderTest, CreateTask) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
AllocaInst *ValPtr32 = Builder.CreateAlloca(Builder.getInt32Ty());
AllocaInst *ValPtr128 = Builder.CreateAlloca(Builder.getInt128Ty());
Value *Val128 =
Builder.CreateLoad(Builder.getInt128Ty(), ValPtr128, "bodygen.load");
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(AllocIP);
AllocaInst *Local128 = Builder.CreateAlloca(Builder.getInt128Ty(), nullptr,
"bodygen.alloca128");
Builder.restoreIP(CodeGenIP);
// Loading and storing captured pointer and values
Builder.CreateStore(Val128, Local128);
Value *Val32 = Builder.CreateLoad(ValPtr32->getAllocatedType(), ValPtr32,
"bodygen.load32");
LoadInst *PrivLoad128 = Builder.CreateLoad(
Local128->getAllocatedType(), Local128, "bodygen.local.load128");
Value *Cmp = Builder.CreateICmpNE(
Val32, Builder.CreateTrunc(PrivLoad128, Val32->getType()));
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
return Error::success();
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()),
/*DeallocIPs=*/{}, BodyGenCB));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
// Verify the Ident argument
GlobalVariable *Ident = cast<GlobalVariable>(TaskAllocCall->getArgOperand(0));
ASSERT_NE(Ident, nullptr);
EXPECT_TRUE(Ident->hasInitializer());
Constant *Initializer = Ident->getInitializer();
GlobalVariable *SrcStrGlob =
cast<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts());
ASSERT_NE(SrcStrGlob, nullptr);
ConstantDataArray *SrcSrc =
dyn_cast<ConstantDataArray>(SrcStrGlob->getInitializer());
ASSERT_NE(SrcSrc, nullptr);
// Verify the num_threads argument.
CallInst *GTID = dyn_cast<CallInst>(TaskAllocCall->getArgOperand(1));
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
// Verify the flags
// TODO: Check for others flags. Currently testing only for tiedness.
ConstantInt *Flags = dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(2));
ASSERT_NE(Flags, nullptr);
EXPECT_EQ(Flags->getSExtValue(), 1);
// Verify the data size
ConstantInt *DataSize =
dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(3));
ASSERT_NE(DataSize, nullptr);
EXPECT_EQ(DataSize->getSExtValue(), 40);
ConstantInt *SharedsSize =
dyn_cast<ConstantInt>(TaskAllocCall->getOperand(4));
EXPECT_EQ(SharedsSize->getSExtValue(),
24); // 64-bit pointer + 128-bit integer
// Verify Wrapper function
Function *OutlinedFn =
dyn_cast<Function>(TaskAllocCall->getArgOperand(5)->stripPointerCasts());
ASSERT_NE(OutlinedFn, nullptr);
LoadInst *SharedsLoad = dyn_cast<LoadInst>(OutlinedFn->begin()->begin());
ASSERT_NE(SharedsLoad, nullptr);
EXPECT_EQ(SharedsLoad->getPointerOperand(), OutlinedFn->getArg(1));
EXPECT_FALSE(OutlinedFn->isDeclaration());
EXPECT_EQ(OutlinedFn->getArg(0)->getType(), Builder.getInt32Ty());
// Verify that the data argument is used only once, and that too in the load
// instruction that is then used for accessing shared data.
Value *DataPtr = OutlinedFn->getArg(1);
EXPECT_TRUE(DataPtr->hasOneUse());
EXPECT_TRUE(isa<LoadInst>(DataPtr->uses().begin()->getUser()));
Value *Data = DataPtr->uses().begin()->getUser();
EXPECT_TRUE(all_of(Data->uses(), [](Use &U) {
return isa<GetElementPtrInst>(U.getUser());
}));
// Verify the presence of `trunc` and `icmp` instructions in Outlined function
EXPECT_TRUE(any_of(instructions(OutlinedFn),
[](Instruction &inst) { return isa<TruncInst>(&inst); }));
EXPECT_TRUE(any_of(instructions(OutlinedFn),
[](Instruction &inst) { return isa<ICmpInst>(&inst); }));
// Verify the execution of the task
CallInst *TaskCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task)
->user_back());
ASSERT_NE(TaskCall, nullptr);
EXPECT_EQ(TaskCall->getArgOperand(0), Ident);
EXPECT_EQ(TaskCall->getArgOperand(1), GTID);
EXPECT_EQ(TaskCall->getArgOperand(2), TaskAllocCall);
// Verify that the argument data has been copied
for (User *in : TaskAllocCall->users()) {
if (MemCpyInst *memCpyInst = dyn_cast<MemCpyInst>(in)) {
EXPECT_EQ(memCpyInst->getDest(), TaskAllocCall);
}
}
}
TEST_F(OpenMPIRBuilderTest, CreateTaskNoArgs) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
return Error::success();
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()),
/*DeallocIPs=*/{}, BodyGenCB));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
// Check that the outlined function has only one argument.
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
Function *OutlinedFn = dyn_cast<Function>(TaskAllocCall->getArgOperand(5));
ASSERT_NE(OutlinedFn, nullptr);
ASSERT_EQ(OutlinedFn->arg_size(), 1U);
}
TEST_F(OpenMPIRBuilderTest, CreateTaskUntied) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
return Error::success();
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()),
/*DeallocIPs=*/{}, BodyGenCB,
/*Tied=*/false));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check for the `Tied` argument
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
ASSERT_NE(TaskAllocCall, nullptr);
ConstantInt *Flags = dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(2));
ASSERT_NE(Flags, nullptr);
EXPECT_EQ(Flags->getZExtValue() & 1U, 0U);
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateTaskDepend) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
return Error::success();
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
AllocaInst *InDep = Builder.CreateAlloca(Type::getInt32Ty(M->getContext()));
SmallVector<OpenMPIRBuilder::DependData> DDS;
{
OpenMPIRBuilder::DependData DDIn(RTLDependenceKindTy::DepIn,
Type::getInt32Ty(M->getContext()), InDep);
DDS.push_back(DDIn);
}
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()),
/*DeallocIPs=*/{}, BodyGenCB,
/*Tied=*/false, /*Final*/ nullptr, /*IfCondition*/ nullptr, DDS));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check for the `NumDeps` argument
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder
.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_with_deps)
->user_back());
ASSERT_NE(TaskAllocCall, nullptr);
ConstantInt *NumDeps = dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(3));
ASSERT_NE(NumDeps, nullptr);
EXPECT_EQ(NumDeps->getZExtValue(), 1U);
// Check for the `DepInfo` array argument
AllocaInst *DepArray = dyn_cast<AllocaInst>(TaskAllocCall->getOperand(4));
ASSERT_NE(DepArray, nullptr);
Value::user_iterator DepArrayI = DepArray->user_begin();
++DepArrayI;
Value::user_iterator DepInfoI = DepArrayI->user_begin();
// Check for the `DependKind` flag in the `DepInfo` array
Value *Flag = findStoredValue<GetElementPtrInst>(*DepInfoI);
ASSERT_NE(Flag, nullptr);
ConstantInt *FlagInt = dyn_cast<ConstantInt>(Flag);
ASSERT_NE(FlagInt, nullptr);
EXPECT_EQ(FlagInt->getZExtValue(),
static_cast<unsigned int>(RTLDependenceKindTy::DepIn));
++DepInfoI;
// Check for the size in the `DepInfo` array
Value *Size = findStoredValue<GetElementPtrInst>(*DepInfoI);
ASSERT_NE(Size, nullptr);
ConstantInt *SizeInt = dyn_cast<ConstantInt>(Size);
ASSERT_NE(SizeInt, nullptr);
EXPECT_EQ(SizeInt->getZExtValue(), 4U);
++DepInfoI;
// Check for the variable address in the `DepInfo` array
Value *AddrStored = findStoredValue<GetElementPtrInst>(*DepInfoI);
ASSERT_NE(AddrStored, nullptr);
PtrToIntInst *AddrInt = dyn_cast<PtrToIntInst>(AddrStored);
ASSERT_NE(AddrInt, nullptr);
Value *Addr = AddrInt->getPointerOperand();
EXPECT_EQ(Addr, InDep);
ConstantInt *NumDepsNoAlias =
dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(5));
ASSERT_NE(NumDepsNoAlias, nullptr);
EXPECT_EQ(NumDepsNoAlias->getZExtValue(), 0U);
EXPECT_EQ(TaskAllocCall->getOperand(6),
ConstantPointerNull::get(PointerType::getUnqual(M->getContext())));
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateTaskFinal) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
return Error::success();
};
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
IRBuilderBase::InsertPoint AllocaIP = Builder.saveIP();
Builder.SetInsertPoint(BodyBB);
Value *Final = Builder.CreateICmp(
CmpInst::Predicate::ICMP_EQ, F->getArg(0),
ConstantInt::get(Type::getInt32Ty(M->getContext()), 0U));
OpenMPIRBuilder::LocationDescription Loc(Builder.saveIP(), DL);
ASSERT_EXPECTED_INIT(OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTask(Loc, AllocaIP, /*DeallocIPs=*/{},
BodyGenCB,
/*Tied=*/false, Final));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check for the `Tied` argument
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
ASSERT_NE(TaskAllocCall, nullptr);
BinaryOperator *OrInst =
dyn_cast<BinaryOperator>(TaskAllocCall->getArgOperand(2));
ASSERT_NE(OrInst, nullptr);
EXPECT_EQ(OrInst->getOpcode(), BinaryOperator::BinaryOps::Or);
// One of the arguments to `or` instruction is the tied flag, which is equal
// to zero.
EXPECT_TRUE(any_of(OrInst->operands(), [](Value *op) {
if (ConstantInt *TiedValue = dyn_cast<ConstantInt>(op))
return TiedValue->getSExtValue() == 0;
return false;
}));
// One of the arguments to `or` instruction is the final condition.
EXPECT_TRUE(any_of(OrInst->operands(), [Final](Value *op) {
if (SelectInst *Select = dyn_cast<SelectInst>(op)) {
ConstantInt *TrueValue = dyn_cast<ConstantInt>(Select->getTrueValue());
ConstantInt *FalseValue = dyn_cast<ConstantInt>(Select->getFalseValue());
if (!TrueValue || !FalseValue)
return false;
return Select->getCondition() == Final &&
TrueValue->getSExtValue() == 2 && FalseValue->getSExtValue() == 0;
}
return false;
}));
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateTaskIfCondition) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
return Error::success();
};
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
IRBuilderBase::InsertPoint AllocaIP = Builder.saveIP();
Builder.SetInsertPoint(BodyBB);
Value *IfCondition = Builder.CreateICmp(
CmpInst::Predicate::ICMP_EQ, F->getArg(0),
ConstantInt::get(Type::getInt32Ty(M->getContext()), 0U));
OpenMPIRBuilder::LocationDescription Loc(Builder.saveIP(), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTask(Loc, AllocaIP, /*DeallocIPs=*/{}, BodyGenCB,
/*Tied=*/false, /*Final=*/nullptr, IfCondition));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
ASSERT_NE(TaskAllocCall, nullptr);
// Check the branching is based on the if condition argument.
BranchInst *IfConditionBranchInst =
dyn_cast<BranchInst>(TaskAllocCall->getParent()->getTerminator());
ASSERT_NE(IfConditionBranchInst, nullptr);
ASSERT_TRUE(IfConditionBranchInst->isConditional());
EXPECT_EQ(IfConditionBranchInst->getCondition(), IfCondition);
// Check that the `__kmpc_omp_task` executes only in the then branch.
CallInst *TaskCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task)
->user_back());
ASSERT_NE(TaskCall, nullptr);
EXPECT_EQ(TaskCall->getParent(), IfConditionBranchInst->getSuccessor(0));
// Check that the OpenMP Runtime Functions specific to `if` clause execute
// only in the else branch. Also check that the function call is between the
// `__kmpc_omp_task_begin_if0` and `__kmpc_omp_task_complete_if0` calls.
CallInst *TaskBeginIfCall = dyn_cast<CallInst>(
OMPBuilder
.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_begin_if0)
->user_back());
CallInst *TaskCompleteCall = dyn_cast<CallInst>(
OMPBuilder
.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_complete_if0)
->user_back());
ASSERT_NE(TaskBeginIfCall, nullptr);
ASSERT_NE(TaskCompleteCall, nullptr);
Function *OulinedFn =
dyn_cast<Function>(TaskAllocCall->getArgOperand(5)->stripPointerCasts());
ASSERT_NE(OulinedFn, nullptr);
CallInst *OulinedFnCall = dyn_cast<CallInst>(OulinedFn->user_back());
ASSERT_NE(OulinedFnCall, nullptr);
EXPECT_EQ(TaskBeginIfCall->getParent(),
IfConditionBranchInst->getSuccessor(1));
EXPECT_EQ(TaskBeginIfCall->getNextNode(), OulinedFnCall);
EXPECT_EQ(OulinedFnCall->getNextNode(), TaskCompleteCall);
}
TEST_F(OpenMPIRBuilderTest, CreateTaskgroup) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
AllocaInst *ValPtr32 = Builder.CreateAlloca(Builder.getInt32Ty());
AllocaInst *ValPtr128 = Builder.CreateAlloca(Builder.getInt128Ty());
Value *Val128 =
Builder.CreateLoad(Builder.getInt128Ty(), ValPtr128, "bodygen.load");
Instruction *ThenTerm, *ElseTerm;
Value *InternalStoreInst, *InternalLoad32, *InternalLoad128, *InternalIfCmp;
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(AllocIP);
AllocaInst *Local128 = Builder.CreateAlloca(Builder.getInt128Ty(), nullptr,
"bodygen.alloca128");
Builder.restoreIP(CodeGenIP);
// Loading and storing captured pointer and values
InternalStoreInst = Builder.CreateStore(Val128, Local128);
InternalLoad32 = Builder.CreateLoad(ValPtr32->getAllocatedType(), ValPtr32,
"bodygen.load32");
InternalLoad128 = Builder.CreateLoad(Local128->getAllocatedType(), Local128,
"bodygen.local.load128");
InternalIfCmp = Builder.CreateICmpNE(
InternalLoad32,
Builder.CreateTrunc(InternalLoad128, InternalLoad32->getType()));
SplitBlockAndInsertIfThenElse(InternalIfCmp,
CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
return Error::success();
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTaskgroup(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()), {},
BodyGenCB));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *TaskgroupCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_taskgroup)
->user_back());
ASSERT_NE(TaskgroupCall, nullptr);
CallInst *EndTaskgroupCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_end_taskgroup)
->user_back());
ASSERT_NE(EndTaskgroupCall, nullptr);
// Verify the Ident argument
GlobalVariable *Ident = cast<GlobalVariable>(TaskgroupCall->getArgOperand(0));
ASSERT_NE(Ident, nullptr);
EXPECT_TRUE(Ident->hasInitializer());
Constant *Initializer = Ident->getInitializer();
GlobalVariable *SrcStrGlob =
cast<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts());
ASSERT_NE(SrcStrGlob, nullptr);
ConstantDataArray *SrcSrc =
dyn_cast<ConstantDataArray>(SrcStrGlob->getInitializer());
ASSERT_NE(SrcSrc, nullptr);
// Verify the num_threads argument.
CallInst *GTID = dyn_cast<CallInst>(TaskgroupCall->getArgOperand(1));
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction(), OMPBuilder.getOrCreateRuntimeFunctionPtr(
OMPRTL___kmpc_global_thread_num));
// Checking the general structure of the IR generated is same as expected.
Instruction *GeneratedStoreInst = TaskgroupCall->getNextNode();
EXPECT_EQ(GeneratedStoreInst, InternalStoreInst);
Instruction *GeneratedLoad32 =
GeneratedStoreInst->getNextNode();
EXPECT_EQ(GeneratedLoad32, InternalLoad32);
Instruction *GeneratedLoad128 = GeneratedLoad32->getNextNode();
EXPECT_EQ(GeneratedLoad128, InternalLoad128);
// Checking the ordering because of the if statements and that
// `__kmp_end_taskgroup` call is after the if branching.
BasicBlock *RefOrder[] = {TaskgroupCall->getParent(), ThenTerm->getParent(),
ThenTerm->getSuccessor(0),
EndTaskgroupCall->getParent(),
ElseTerm->getParent()};
verifyDFSOrder(F, RefOrder);
}
TEST_F(OpenMPIRBuilderTest, CreateTaskgroupWithTasks) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(AllocIP);
AllocaInst *Alloca32 =
Builder.CreateAlloca(Builder.getInt32Ty(), nullptr, "bodygen.alloca32");
AllocaInst *Alloca64 =
Builder.CreateAlloca(Builder.getInt64Ty(), nullptr, "bodygen.alloca64");
Builder.restoreIP(CodeGenIP);
auto TaskBodyGenCB1 = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
LoadInst *LoadValue =
Builder.CreateLoad(Alloca64->getAllocatedType(), Alloca64);
Value *AddInst = Builder.CreateAdd(LoadValue, Builder.getInt64(64));
Builder.CreateStore(AddInst, Alloca64);
return Error::success();
};
OpenMPIRBuilder::LocationDescription Loc(Builder.saveIP(), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, TaskIP1,
OMPBuilder.createTask(Loc, AllocIP, DeallocIPs, TaskBodyGenCB1));
Builder.restoreIP(TaskIP1);
auto TaskBodyGenCB2 = [&](InsertPointTy AllocIP, InsertPointTy CodeGenIP,
ArrayRef<InsertPointTy> DeallocIPs) {
Builder.restoreIP(CodeGenIP);
LoadInst *LoadValue =
Builder.CreateLoad(Alloca32->getAllocatedType(), Alloca32);
Value *AddInst = Builder.CreateAdd(LoadValue, Builder.getInt32(32));
Builder.CreateStore(AddInst, Alloca32);
return Error::success();
};
OpenMPIRBuilder::LocationDescription Loc2(Builder.saveIP(), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, TaskIP2,
OMPBuilder.createTask(Loc2, AllocIP, DeallocIPs, TaskBodyGenCB2));
Builder.restoreIP(TaskIP2);
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
ASSERT_EXPECTED_INIT(
OpenMPIRBuilder::InsertPointTy, AfterIP,
OMPBuilder.createTaskgroup(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()), {},
BODYGENCB_WRAPPER(BodyGenCB)));
Builder.restoreIP(AfterIP);
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *TaskgroupCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_taskgroup)
->user_back());
ASSERT_NE(TaskgroupCall, nullptr);
CallInst *EndTaskgroupCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_end_taskgroup)
->user_back());
ASSERT_NE(EndTaskgroupCall, nullptr);
Function *TaskAllocFn =
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc);
ASSERT_TRUE(TaskAllocFn->hasNUses(2));
CallInst *FirstTaskAllocCall =
dyn_cast_or_null<CallInst>(*TaskAllocFn->users().begin());
CallInst *SecondTaskAllocCall =
dyn_cast_or_null<CallInst>(*TaskAllocFn->users().begin()++);
ASSERT_NE(FirstTaskAllocCall, nullptr);
ASSERT_NE(SecondTaskAllocCall, nullptr);
// Verify that the tasks have been generated in order and inside taskgroup
// construct.
BasicBlock *RefOrder[] = {
TaskgroupCall->getParent(), FirstTaskAllocCall->getParent(),
SecondTaskAllocCall->getParent(), EndTaskgroupCall->getParent()};
verifyDFSOrder(F, RefOrder);
}
TEST_F(OpenMPIRBuilderTest, EmitOffloadingArraysArguments) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::TargetDataRTArgs RTArgs;
OpenMPIRBuilder::TargetDataInfo Info(true, false);
auto VoidPtrPtrTy = PointerType::getUnqual(Builder.getContext());
auto Int64PtrTy = PointerType::getUnqual(Builder.getContext());
Info.RTArgs.BasePointersArray = ConstantPointerNull::get(Builder.getPtrTy(0));
Info.RTArgs.PointersArray = ConstantPointerNull::get(Builder.getPtrTy(0));
Info.RTArgs.SizesArray = ConstantPointerNull::get(Builder.getPtrTy(0));
Info.RTArgs.MapTypesArray = ConstantPointerNull::get(Builder.getPtrTy(0));
Info.RTArgs.MapNamesArray = ConstantPointerNull::get(Builder.getPtrTy(0));
Info.RTArgs.MappersArray = ConstantPointerNull::get(Builder.getPtrTy(0));
Info.NumberOfPtrs = 4;
Info.EmitDebug = false;
OMPBuilder.emitOffloadingArraysArgument(Builder, RTArgs, Info, false);
EXPECT_NE(RTArgs.BasePointersArray, nullptr);
EXPECT_NE(RTArgs.PointersArray, nullptr);
EXPECT_NE(RTArgs.SizesArray, nullptr);
EXPECT_NE(RTArgs.MapTypesArray, nullptr);
EXPECT_NE(RTArgs.MappersArray, nullptr);
EXPECT_NE(RTArgs.MapNamesArray, nullptr);
EXPECT_EQ(RTArgs.MapTypesArrayEnd, nullptr);
EXPECT_EQ(RTArgs.BasePointersArray->getType(), VoidPtrPtrTy);
EXPECT_EQ(RTArgs.PointersArray->getType(), VoidPtrPtrTy);
EXPECT_EQ(RTArgs.SizesArray->getType(), Int64PtrTy);
EXPECT_EQ(RTArgs.MapTypesArray->getType(), Int64PtrTy);
EXPECT_EQ(RTArgs.MappersArray->getType(), VoidPtrPtrTy);
EXPECT_EQ(RTArgs.MapNamesArray->getType(), VoidPtrPtrTy);
}
TEST_F(OpenMPIRBuilderTest, OffloadEntriesInfoManager) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.setConfig(
OpenMPIRBuilderConfig(true, false, false, false, false, false, false));
OffloadEntriesInfoManager &InfoManager = OMPBuilder.OffloadInfoManager;
TargetRegionEntryInfo EntryInfo("parent", 1, 2, 4, 0);
InfoManager.initializeTargetRegionEntryInfo(EntryInfo, 0);
EXPECT_TRUE(InfoManager.hasTargetRegionEntryInfo(EntryInfo));
InfoManager.initializeDeviceGlobalVarEntryInfo(
"gvar", OffloadEntriesInfoManager::OMPTargetGlobalVarEntryTo, 0);
InfoManager.registerTargetRegionEntryInfo(
EntryInfo, nullptr, nullptr,
OffloadEntriesInfoManager::OMPTargetRegionEntryTargetRegion);
InfoManager.registerDeviceGlobalVarEntryInfo(
"gvar", 0x0, 8, OffloadEntriesInfoManager::OMPTargetGlobalVarEntryTo,
GlobalValue::WeakAnyLinkage);
EXPECT_TRUE(InfoManager.hasDeviceGlobalVarEntryInfo("gvar"));
}
// Tests both registerTargetGlobalVariable and getAddrOfDeclareTargetVar as they
// call each other (recursively in some cases). The test case test these
// functions by utilising them for host code generation for declare target
// global variables
TEST_F(OpenMPIRBuilderTest, registerTargetGlobalVariable) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
OpenMPIRBuilderConfig Config(false, false, false, false, false, false, false);
OMPBuilder.setConfig(Config);
std::vector<llvm::Triple> TargetTriple;
TargetTriple.emplace_back("amdgcn-amd-amdhsa");
TargetRegionEntryInfo EntryInfo("", 42, 4711, 17);
std::vector<GlobalVariable *> RefsGathered;
std::vector<Constant *> Globals;
auto *IntTy = Type::getInt32Ty(Ctx);
for (int I = 0; I < 2; ++I) {
Globals.push_back(M->getOrInsertGlobal(
"test_data_int_" + std::to_string(I), IntTy, [&]() -> GlobalVariable * {
return new GlobalVariable(
*M, IntTy, false, GlobalValue::LinkageTypes::WeakAnyLinkage,
ConstantInt::get(IntTy, I), "test_data_int_" + std::to_string(I));
}));
}
OMPBuilder.registerTargetGlobalVariable(
OffloadEntriesInfoManager::OMPTargetGlobalVarEntryTo,
OffloadEntriesInfoManager::OMPTargetDeviceClauseAny, false, true,
EntryInfo, Globals[0]->getName(), RefsGathered, false, TargetTriple,
nullptr, nullptr, Globals[0]->getType(), Globals[0]);
OMPBuilder.registerTargetGlobalVariable(
OffloadEntriesInfoManager::OMPTargetGlobalVarEntryLink,
OffloadEntriesInfoManager::OMPTargetDeviceClauseAny, false, true,
EntryInfo, Globals[1]->getName(), RefsGathered, false, TargetTriple,
nullptr, nullptr, Globals[1]->getType(), Globals[1]);
llvm::OpenMPIRBuilder::EmitMetadataErrorReportFunctionTy &&ErrorReportfn =
[](llvm::OpenMPIRBuilder::EmitMetadataErrorKind Kind,
const llvm::TargetRegionEntryInfo &EntryInfo) -> void {
// If this is invoked, then we want to emit an error, even if it is not
// neccesarily the most readable, as something has went wrong. The
// test-suite unfortunately eats up all error output
ASSERT_EQ(Kind, Kind);
};
OMPBuilder.createOffloadEntriesAndInfoMetadata(ErrorReportfn);
// Clauses for data_int_0 with To + Any clauses for the host
std::vector<GlobalVariable *> OffloadEntries;
OffloadEntries.push_back(M->getNamedGlobal(".offloading.entry_name"));
OffloadEntries.push_back(
M->getNamedGlobal(".offloading.entry.test_data_int_0"));
// Clauses for data_int_1 with Link + Any clauses for the host
OffloadEntries.push_back(
M->getNamedGlobal("test_data_int_1_decl_tgt_ref_ptr"));
OffloadEntries.push_back(M->getNamedGlobal(".offloading.entry_name.1"));
OffloadEntries.push_back(
M->getNamedGlobal(".offloading.entry.test_data_int_1_decl_tgt_ref_ptr"));
for (unsigned I = 0; I < OffloadEntries.size(); ++I)
EXPECT_NE(OffloadEntries[I], nullptr);
// Metadata generated for the host offload module
NamedMDNode *OffloadMetadata = M->getNamedMetadata("omp_offload.info");
ASSERT_THAT(OffloadMetadata, testing::NotNull());
StringRef Nodes[2] = {
cast<MDString>(OffloadMetadata->getOperand(0)->getOperand(1))
->getString(),
cast<MDString>(OffloadMetadata->getOperand(1)->getOperand(1))
->getString()};
EXPECT_THAT(
Nodes, testing::UnorderedElementsAre("test_data_int_0",
"test_data_int_1_decl_tgt_ref_ptr"));
}
TEST_F(OpenMPIRBuilderTest, createGPUOffloadEntry) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
OpenMPIRBuilderConfig Config(/* IsTargetDevice = */ true,
/* IsGPU = */ true,
/* OpenMPOffloadMandatory = */ false,
/* HasRequiresReverseOffload = */ false,
/* HasRequiresUnifiedAddress = */ false,
/* HasRequiresUnifiedSharedMemory = */ false,
/* HasRequiresDynamicAllocators = */ false);
OMPBuilder.setConfig(Config);
FunctionCallee FnTypeAndCallee =
M->getOrInsertFunction("test_kernel", Type::getVoidTy(Ctx));
auto *Fn = cast<Function>(FnTypeAndCallee.getCallee());
OMPBuilder.createOffloadEntry(/* ID = */ nullptr, Fn,
/* Size = */ 0,
/* Flags = */ 0, GlobalValue::WeakAnyLinkage);
// Check kernel attributes
EXPECT_TRUE(Fn->hasFnAttribute("kernel"));
EXPECT_TRUE(Fn->hasFnAttribute(Attribute::MustProgress));
}
TEST_F(OpenMPIRBuilderTest, splitBB) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.Config.IsTargetDevice = false;
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
Builder.SetCurrentDebugLocation(DL);
AllocaInst *alloc = Builder.CreateAlloca(Builder.getInt32Ty());
EXPECT_TRUE(DL == alloc->getStableDebugLoc());
BasicBlock *AllocaBB = Builder.GetInsertBlock();
splitBB(Builder, /*CreateBranch=*/true, "test");
if (AllocaBB->getTerminator())
EXPECT_TRUE(DL == AllocaBB->getTerminator()->getStableDebugLoc());
}
} // namespace
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