89fd7b3d1e
These are identified by misc-include-cleaner. I've filtered out those that break builds. Also, I'm staying away from llvm-config.h, config.h, and Compiler.h, which likely cause platform- or compiler-specific build failures.
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
//===-- SPIRVStripConvergentIntrinsics.cpp ----------------------*- C++ -*-===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This pass trims convergence intrinsics as those were only useful when
|
|
// modifying the CFG during IR passes.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "SPIRV.h"
|
|
#include "SPIRVSubtarget.h"
|
|
#include "SPIRVUtils.h"
|
|
#include "llvm/CodeGen/IntrinsicLowering.h"
|
|
#include "llvm/IR/IntrinsicInst.h"
|
|
#include "llvm/IR/Intrinsics.h"
|
|
#include "llvm/Transforms/Utils/Cloning.h"
|
|
#include "llvm/Transforms/Utils/LowerMemIntrinsics.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
class SPIRVStripConvergentIntrinsics : public FunctionPass {
|
|
public:
|
|
static char ID;
|
|
|
|
SPIRVStripConvergentIntrinsics() : FunctionPass(ID) {}
|
|
|
|
virtual bool runOnFunction(Function &F) override {
|
|
DenseSet<Instruction *> ToRemove;
|
|
|
|
// Is the instruction is a convergent intrinsic, add it to kill-list and
|
|
// returns true. Returns false otherwise.
|
|
auto CleanupIntrinsic = [&](IntrinsicInst *II) {
|
|
if (II->getIntrinsicID() != Intrinsic::experimental_convergence_entry &&
|
|
II->getIntrinsicID() != Intrinsic::experimental_convergence_loop &&
|
|
II->getIntrinsicID() != Intrinsic::experimental_convergence_anchor)
|
|
return false;
|
|
|
|
II->replaceAllUsesWith(UndefValue::get(II->getType()));
|
|
ToRemove.insert(II);
|
|
return true;
|
|
};
|
|
|
|
// Replace the given CallInst by a similar CallInst with no convergencectrl
|
|
// attribute.
|
|
auto CleanupCall = [&](CallInst *CI) {
|
|
auto OB = CI->getOperandBundle(LLVMContext::OB_convergencectrl);
|
|
if (!OB.has_value())
|
|
return;
|
|
|
|
auto *NewCall = CallBase::removeOperandBundle(
|
|
CI, LLVMContext::OB_convergencectrl, CI->getIterator());
|
|
NewCall->copyMetadata(*CI);
|
|
CI->replaceAllUsesWith(NewCall);
|
|
ToRemove.insert(CI);
|
|
};
|
|
|
|
for (BasicBlock &BB : F) {
|
|
for (Instruction &I : BB) {
|
|
if (auto *II = dyn_cast<IntrinsicInst>(&I))
|
|
if (CleanupIntrinsic(II))
|
|
continue;
|
|
if (auto *CI = dyn_cast<CallInst>(&I))
|
|
CleanupCall(CI);
|
|
}
|
|
}
|
|
|
|
// All usages must be removed before their definition is removed.
|
|
for (Instruction *I : ToRemove)
|
|
I->eraseFromParent();
|
|
|
|
return ToRemove.size() != 0;
|
|
}
|
|
};
|
|
} // namespace
|
|
|
|
char SPIRVStripConvergentIntrinsics::ID = 0;
|
|
INITIALIZE_PASS(SPIRVStripConvergentIntrinsics, "strip-convergent-intrinsics",
|
|
"SPIRV strip convergent intrinsics", false, false)
|
|
|
|
FunctionPass *llvm::createSPIRVStripConvergenceIntrinsicsPass() {
|
|
return new SPIRVStripConvergentIntrinsics();
|
|
}
|