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//===- LegalizerHelperTest.h
//-----------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/GlobalISel/GISelChangeObserver.h"
#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
#include "llvm/CodeGen/GlobalISel/MIPatternMatch.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "llvm/CodeGen/MIRParser/MIRParser.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/Support/FileCheck.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace MIPatternMatch;
void initLLVM() {
InitializeAllTargets();
InitializeAllTargetMCs();
InitializeAllAsmPrinters();
InitializeAllAsmParsers();
PassRegistry *Registry = PassRegistry::getPassRegistry();
initializeCore(*Registry);
initializeCodeGen(*Registry);
}
/// Create a TargetMachine. As we lack a dedicated always available target for
/// unittests, we go for "AArch64".
std::unique_ptr<LLVMTargetMachine> createTargetMachine() {
Triple TargetTriple("aarch64--");
std::string Error;
const Target *T = TargetRegistry::lookupTarget("", TargetTriple, Error);
if (!T)
return nullptr;
TargetOptions Options;
return std::unique_ptr<LLVMTargetMachine>(static_cast<LLVMTargetMachine*>(
T->createTargetMachine("AArch64", "", "", Options, None, None,
CodeGenOpt::Aggressive)));
}
std::unique_ptr<Module> parseMIR(LLVMContext &Context,
std::unique_ptr<MIRParser> &MIR,
const TargetMachine &TM, StringRef MIRCode,
const char *FuncName, MachineModuleInfo &MMI) {
SMDiagnostic Diagnostic;
std::unique_ptr<MemoryBuffer> MBuffer = MemoryBuffer::getMemBuffer(MIRCode);
MIR = createMIRParser(std::move(MBuffer), Context);
if (!MIR)
return nullptr;
std::unique_ptr<Module> M = MIR->parseIRModule();
if (!M)
return nullptr;
M->setDataLayout(TM.createDataLayout());
if (MIR->parseMachineFunctions(*M, MMI))
return nullptr;
return M;
}
std::pair<std::unique_ptr<Module>, std::unique_ptr<MachineModuleInfo>>
createDummyModule(LLVMContext &Context, const LLVMTargetMachine &TM,
StringRef MIRFunc) {
SmallString<512> S;
StringRef MIRString = (Twine(R"MIR(
---
...
name: func
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
- { id: 3, class: _ }
body: |
bb.1:
%0(s64) = COPY $x0
%1(s64) = COPY $x1
%2(s64) = COPY $x2
)MIR") + Twine(MIRFunc) + Twine("...\n"))
.toNullTerminatedStringRef(S);
std::unique_ptr<MIRParser> MIR;
auto MMI = make_unique<MachineModuleInfo>(&TM);
std::unique_ptr<Module> M =
parseMIR(Context, MIR, TM, MIRString, "func", *MMI);
return make_pair(std::move(M), std::move(MMI));
}
static MachineFunction *getMFFromMMI(const Module *M,
const MachineModuleInfo *MMI) {
Function *F = M->getFunction("func");
auto *MF = MMI->getMachineFunction(*F);
return MF;
}
static void collectCopies(SmallVectorImpl<unsigned> &Copies,
MachineFunction *MF) {
for (auto &MBB : *MF)
for (MachineInstr &MI : MBB) {
if (MI.getOpcode() == TargetOpcode::COPY)
Copies.push_back(MI.getOperand(0).getReg());
}
}
class LegalizerHelperTest : public ::testing::Test {
protected:
LegalizerHelperTest() : ::testing::Test() {
TM = createTargetMachine();
if (!TM)
return;
ModuleMMIPair = createDummyModule(Context, *TM, "");
MF = getMFFromMMI(ModuleMMIPair.first.get(), ModuleMMIPair.second.get());
collectCopies(Copies, MF);
EntryMBB = &*MF->begin();
B.setMF(*MF);
MRI = &MF->getRegInfo();
B.setInsertPt(*EntryMBB, EntryMBB->end());
}
LLVMContext Context;
std::unique_ptr<LLVMTargetMachine> TM;
MachineFunction *MF;
std::pair<std::unique_ptr<Module>, std::unique_ptr<MachineModuleInfo>>
ModuleMMIPair;
SmallVector<unsigned, 4> Copies;
MachineBasicBlock *EntryMBB;
MachineIRBuilder B;
MachineRegisterInfo *MRI;
};
#define DefineLegalizerInfo(Name, SettingUpActionsBlock) \
class Name##Info : public LegalizerInfo { \
public: \
Name##Info(const TargetSubtargetInfo &ST) { \
using namespace TargetOpcode; \
const LLT s8 = LLT::scalar(8); \
(void)s8; \
const LLT s16 = LLT::scalar(16); \
(void)s16; \
const LLT s32 = LLT::scalar(32); \
(void)s32; \
const LLT s64 = LLT::scalar(64); \
(void)s64; \
do \
SettingUpActionsBlock while (0); \
computeTables(); \
verify(*ST.getInstrInfo()); \
} \
};
static bool CheckMachineFunction(const MachineFunction &MF,
StringRef CheckStr) {
SmallString<512> Msg;
raw_svector_ostream OS(Msg);
MF.print(OS);
auto OutputBuf = MemoryBuffer::getMemBuffer(Msg, "Output", false);
auto CheckBuf = MemoryBuffer::getMemBuffer(CheckStr, "");
SmallString<4096> CheckFileBuffer;
FileCheckRequest Req;
FileCheck FC(Req);
StringRef CheckFileText =
FC.CanonicalizeFile(*CheckBuf.get(), CheckFileBuffer);
SourceMgr SM;
SM.AddNewSourceBuffer(MemoryBuffer::getMemBuffer(CheckFileText, "CheckFile"),
SMLoc());
Regex PrefixRE = FC.buildCheckPrefixRegex();
std::vector<FileCheckString> CheckStrings;
FC.ReadCheckFile(SM, CheckFileText, PrefixRE, CheckStrings);
auto OutBuffer = OutputBuf->getBuffer();
SM.AddNewSourceBuffer(std::move(OutputBuf), SMLoc());
return FC.CheckInput(SM, OutBuffer, CheckStrings);
}
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