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//===---- llvm/unittest/CodeGen/SelectionDAGTestBase.h --------------------===//
//
// 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/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Target/TargetMachine.h"
#include "gtest/gtest.h"
using namespace llvm;
class SelectionDAGTestBase : public testing::Test {
protected:
static void SetUpTestCase() {
InitializeAllTargets();
InitializeAllTargetMCs();
}
void SetUp() override {
StringRef Assembly = "@g = global i32 0\n"
"@g_alias = alias i32, i32* @g\n"
"define i32 @f() {\n"
" %1 = load i32, i32* @g\n"
" ret i32 %1\n"
"}";
Triple TargetTriple("aarch64--");
std::string Error;
const Target *T = TargetRegistry::lookupTarget("", TargetTriple, Error);
// FIXME: These tests do not depend on AArch64 specifically, but we have to
// initialize a target. A skeleton Target for unittests would allow us to
// always run these tests.
if (!T)
GTEST_SKIP();
TargetOptions Options;
TM = std::unique_ptr<TargetMachine>(
T->createTargetMachine(TargetTriple, "", "+sve", Options, std::nullopt,
std::nullopt, CodeGenOptLevel::Aggressive));
if (!TM)
GTEST_SKIP();
SMDiagnostic SMError;
M = parseAssemblyString(Assembly, SMError, Context);
ASSERT_TRUE(M && "Could not parse module!");
M->setDataLayout(TM->createDataLayout());
F = M->getFunction("f");
ASSERT_TRUE(F && "Could not get function f!");
G = M->getGlobalVariable("g");
ASSERT_TRUE(G && "Could not get global g!");
AliasedG = M->getNamedAlias("g_alias");
ASSERT_TRUE(AliasedG && "Could not get alias g_alias!");
MachineModuleInfo MMI(TM.get());
MF = std::make_unique<MachineFunction>(*F, *TM, *TM->getSubtargetImpl(*F),
MMI.getContext(), 0);
DAG = std::make_unique<SelectionDAG>(*TM, CodeGenOptLevel::None);
if (!DAG)
reportFatalUsageError("Failed to create SelectionDAG?");
OptimizationRemarkEmitter ORE(F);
FunctionAnalysisManager FAM;
FAM.registerPass([&] { return TM->getTargetIRAnalysis(); });
TargetTransformInfo TTI = TM->getTargetIRAnalysis().run(*F, FAM);
DAG->init(*MF, ORE, nullptr, nullptr, nullptr, nullptr, nullptr, MMI,
nullptr, TTI.hasBranchDivergence(F));
}
TargetLoweringBase::LegalizeTypeAction getTypeAction(EVT VT) {
return DAG->getTargetLoweringInfo().getTypeAction(Context, VT);
}
EVT getTypeToTransformTo(EVT VT) {
return DAG->getTargetLoweringInfo().getTypeToTransformTo(Context, VT);
}
LLVMContext Context;
std::unique_ptr<TargetMachine> TM;
std::unique_ptr<Module> M;
Function *F;
GlobalVariable *G;
GlobalAlias *AliasedG;
std::unique_ptr<MachineFunction> MF;
std::unique_ptr<SelectionDAG> DAG;
};
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