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//===- llvm/unittest/CodeGen/PassManager.cpp - PassManager 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
//
//===----------------------------------------------------------------------===//
// Test that the various MachineFunction pass managers, adaptors, analyses, and
// analysis managers work.
//===----------------------------------------------------------------------===//
#include "llvm/IR/PassManager.h"
#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Analysis/LoopAnalysisManager.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachinePassManager.h"
#include "llvm/IR/Analysis.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/TargetParser/Host.h"
#include "llvm/TargetParser/Triple.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
class TestFunctionAnalysis : public AnalysisInfoMixin<TestFunctionAnalysis> {
public:
struct Result {
Result(int Count) : InstructionCount(Count) {}
int InstructionCount;
};
/// The number of instructions in the Function.
Result run(Function &F, FunctionAnalysisManager &AM) {
return Result(F.getInstructionCount());
}
private:
friend AnalysisInfoMixin<TestFunctionAnalysis>;
static AnalysisKey Key;
};
AnalysisKey TestFunctionAnalysis::Key;
class TestMachineFunctionAnalysis
: public AnalysisInfoMixin<TestMachineFunctionAnalysis> {
public:
struct Result {
Result(int Count) : InstructionCount(Count) {}
int InstructionCount;
};
Result run(MachineFunction &MF, MachineFunctionAnalysisManager &AM) {
FunctionAnalysisManager &FAM =
AM.getResult<FunctionAnalysisManagerMachineFunctionProxy>(MF)
.getManager();
TestFunctionAnalysis::Result &FAR =
FAM.getResult<TestFunctionAnalysis>(MF.getFunction());
return FAR.InstructionCount;
}
private:
friend AnalysisInfoMixin<TestMachineFunctionAnalysis>;
static AnalysisKey Key;
};
AnalysisKey TestMachineFunctionAnalysis::Key;
struct TestMachineFunctionPass : public PassInfoMixin<TestMachineFunctionPass> {
TestMachineFunctionPass(int &Count, std::vector<int> &Counts)
: Count(Count), Counts(Counts) {}
PreservedAnalyses run(MachineFunction &MF,
MachineFunctionAnalysisManager &MFAM) {
FunctionAnalysisManager &FAM =
MFAM.getResult<FunctionAnalysisManagerMachineFunctionProxy>(MF)
.getManager();
TestFunctionAnalysis::Result &FAR =
FAM.getResult<TestFunctionAnalysis>(MF.getFunction());
Count += FAR.InstructionCount;
TestMachineFunctionAnalysis::Result &MFAR =
MFAM.getResult<TestMachineFunctionAnalysis>(MF);
Count += MFAR.InstructionCount;
Counts.push_back(Count);
return PreservedAnalyses::none();
}
int &Count;
std::vector<int> &Counts;
};
struct TestMachineModulePass : public PassInfoMixin<TestMachineModulePass> {
TestMachineModulePass(int &Count, std::vector<int> &Counts)
: Count(Count), Counts(Counts) {}
PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM) {
MachineModuleInfo &MMI = MAM.getResult<MachineModuleAnalysis>(M).getMMI();
FunctionAnalysisManager &FAM =
MAM.getResult<FunctionAnalysisManagerModuleProxy>(M).getManager();
MachineFunctionAnalysisManager &MFAM =
MAM.getResult<MachineFunctionAnalysisManagerModuleProxy>(M)
.getManager();
for (Function &F : M) {
MachineFunction &MF = MMI.getOrCreateMachineFunction(F);
Count += FAM.getResult<TestFunctionAnalysis>(F).InstructionCount;
Count += MFAM.getResult<TestMachineFunctionAnalysis>(MF).InstructionCount;
}
Counts.push_back(Count);
return PreservedAnalyses::all();
}
int &Count;
std::vector<int> &Counts;
};
struct ReportWarningPass : public PassInfoMixin<ReportWarningPass> {
PreservedAnalyses run(MachineFunction &MF,
MachineFunctionAnalysisManager &MFAM) {
auto &Ctx = MF.getContext();
Ctx.reportWarning(SMLoc(), "Test warning message.");
return PreservedAnalyses::all();
}
};
std::unique_ptr<Module> parseIR(LLVMContext &Context, const char *IR) {
SMDiagnostic Err;
return parseAssemblyString(IR, Err, Context);
}
class PassManagerTest : public ::testing::Test {
protected:
LLVMContext Context;
std::unique_ptr<Module> M;
std::unique_ptr<TargetMachine> TM;
public:
PassManagerTest()
: M(parseIR(Context, "define void @f() {\n"
"entry:\n"
" call void @g()\n"
" call void @h()\n"
" ret void\n"
"}\n"
"define void @g() {\n"
" ret void\n"
"}\n"
"define void @h() {\n"
" ret void\n"
"}\n")) {
// MachineModuleAnalysis needs a TargetMachine instance.
llvm::InitializeAllTargets();
std::string TripleName = Triple::normalize(sys::getDefaultTargetTriple());
std::string Error;
const Target *TheTarget =
TargetRegistry::lookupTarget(TripleName, Error);
if (!TheTarget)
return;
TargetOptions Options;
TM.reset(TheTarget->createTargetMachine(TripleName, "", "", Options,
std::nullopt));
}
};
TEST_F(PassManagerTest, Basic) {
if (!TM)
GTEST_SKIP();
LLVMTargetMachine *LLVMTM = static_cast<LLVMTargetMachine *>(TM.get());
M->setDataLayout(TM->createDataLayout());
MachineModuleInfo MMI(LLVMTM);
MachineFunctionAnalysisManager MFAM;
LoopAnalysisManager LAM;
FunctionAnalysisManager FAM;
CGSCCAnalysisManager CGAM;
ModuleAnalysisManager MAM;
PassBuilder PB(TM.get());
PB.registerModuleAnalyses(MAM);
PB.registerCGSCCAnalyses(CGAM);
PB.registerFunctionAnalyses(FAM);
PB.registerLoopAnalyses(LAM);
PB.registerMachineFunctionAnalyses(MFAM);
PB.crossRegisterProxies(LAM, FAM, CGAM, MAM, &MFAM);
FAM.registerPass([&] { return TestFunctionAnalysis(); });
MAM.registerPass([&] { return MachineModuleAnalysis(MMI); });
MFAM.registerPass([&] { return TestMachineFunctionAnalysis(); });
int Count = 0;
std::vector<int> Counts;
ModulePassManager MPM;
FunctionPassManager FPM;
MachineFunctionPassManager MFPM;
MPM.addPass(TestMachineModulePass(Count, Counts));
FPM.addPass(createFunctionToMachineFunctionPassAdaptor(
TestMachineFunctionPass(Count, Counts)));
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
MPM.addPass(TestMachineModulePass(Count, Counts));
MFPM.addPass(TestMachineFunctionPass(Count, Counts));
FPM = FunctionPassManager();
FPM.addPass(createFunctionToMachineFunctionPassAdaptor(std::move(MFPM)));
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
testing::internal::CaptureStderr();
MPM.run(*M, MAM);
std::string Output = testing::internal::GetCapturedStderr();
EXPECT_EQ((std::vector<int>{10, 16, 18, 20, 30, 36, 38, 40}), Counts);
EXPECT_EQ(40, Count);
}
TEST_F(PassManagerTest, DiagnosticHandler) {
if (!TM)
GTEST_SKIP();
LLVMTargetMachine *LLVMTM = static_cast<LLVMTargetMachine *>(TM.get());
M->setDataLayout(TM->createDataLayout());
MachineModuleInfo MMI(LLVMTM);
LoopAnalysisManager LAM;
MachineFunctionAnalysisManager MFAM;
FunctionAnalysisManager FAM;
CGSCCAnalysisManager CGAM;
ModuleAnalysisManager MAM;
PassBuilder PB(TM.get());
PB.registerModuleAnalyses(MAM);
PB.registerCGSCCAnalyses(CGAM);
PB.registerFunctionAnalyses(FAM);
PB.registerLoopAnalyses(LAM);
PB.registerMachineFunctionAnalyses(MFAM);
PB.crossRegisterProxies(LAM, FAM, CGAM, MAM, &MFAM);
MAM.registerPass([&] { return MachineModuleAnalysis(MMI); });
ModulePassManager MPM;
FunctionPassManager FPM;
MachineFunctionPassManager MFPM;
MPM.addPass(RequireAnalysisPass<MachineModuleAnalysis, Module>());
MFPM.addPass(ReportWarningPass());
FPM.addPass(createFunctionToMachineFunctionPassAdaptor(std::move(MFPM)));
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
testing::internal::CaptureStderr();
MPM.run(*M, MAM);
std::string Output = testing::internal::GetCapturedStderr();
EXPECT_TRUE(Output.find("warning: <unknown>:0: Test warning message.") !=
std::string::npos);
}
} // namespace
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