13f38c97d5
The "at construction" binop folds in SelectionDAG::getNode() has different behaviour when compared to the equivalent LLVM IR. This PR makes the behaviour consistent while also extending the coverage to include signed/unsigned max/min operations.
100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
//===---- llvm/unittest/CodeGen/SelectionDAGTestBase.h --------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/OptimizationRemarkEmitter.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/CodeGen/TargetLowering.h"
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#include "llvm/IR/Module.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Target/TargetMachine.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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class SelectionDAGTestBase : public testing::Test {
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protected:
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static void SetUpTestCase() {
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InitializeAllTargets();
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InitializeAllTargetMCs();
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}
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void SetUp() override {
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StringRef Assembly = "@g = global i32 0\n"
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"@g_alias = alias i32, i32* @g\n"
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"define i32 @f() {\n"
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" %1 = load i32, i32* @g\n"
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" ret i32 %1\n"
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"}";
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Triple TargetTriple("aarch64--");
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std::string Error;
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const Target *T = TargetRegistry::lookupTarget("", TargetTriple, Error);
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// FIXME: These tests do not depend on AArch64 specifically, but we have to
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// initialize a target. A skeleton Target for unittests would allow us to
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// always run these tests.
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if (!T)
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GTEST_SKIP();
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TargetOptions Options;
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TM = std::unique_ptr<TargetMachine>(
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T->createTargetMachine(TargetTriple, "", "+sve", Options, std::nullopt,
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std::nullopt, CodeGenOptLevel::Aggressive));
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if (!TM)
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GTEST_SKIP();
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SMDiagnostic SMError;
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M = parseAssemblyString(Assembly, SMError, Context);
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ASSERT_TRUE(M && "Could not parse module!");
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M->setDataLayout(TM->createDataLayout());
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F = M->getFunction("f");
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ASSERT_TRUE(F && "Could not get function f!");
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G = M->getGlobalVariable("g");
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ASSERT_TRUE(G && "Could not get global g!");
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AliasedG = M->getNamedAlias("g_alias");
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ASSERT_TRUE(AliasedG && "Could not get alias g_alias!");
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MachineModuleInfo MMI(TM.get());
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MF = std::make_unique<MachineFunction>(*F, *TM, *TM->getSubtargetImpl(*F),
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MMI.getContext(), 0);
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DAG = std::make_unique<SelectionDAG>(*TM, CodeGenOptLevel::None);
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if (!DAG)
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reportFatalUsageError("Failed to create SelectionDAG?");
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OptimizationRemarkEmitter ORE(F);
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FunctionAnalysisManager FAM;
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FAM.registerPass([&] { return TM->getTargetIRAnalysis(); });
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TargetTransformInfo TTI = TM->getTargetIRAnalysis().run(*F, FAM);
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DAG->init(*MF, ORE, nullptr, nullptr, nullptr, nullptr, nullptr, MMI,
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nullptr, TTI.hasBranchDivergence(F));
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}
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TargetLoweringBase::LegalizeTypeAction getTypeAction(EVT VT) {
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return DAG->getTargetLoweringInfo().getTypeAction(Context, VT);
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}
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EVT getTypeToTransformTo(EVT VT) {
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return DAG->getTargetLoweringInfo().getTypeToTransformTo(Context, VT);
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}
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LLVMContext Context;
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std::unique_ptr<TargetMachine> TM;
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std::unique_ptr<Module> M;
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Function *F;
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GlobalVariable *G;
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GlobalAlias *AliasedG;
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std::unique_ptr<MachineFunction> MF;
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std::unique_ptr<SelectionDAG> DAG;
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};
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