AssemblerUtils.h
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//===-- AssemblerUtils.h ----------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_UNITTESTS_TOOLS_LLVMEXEGESIS_ASSEMBLERUTILS_H
#define LLVM_UNITTESTS_TOOLS_LLVMEXEGESIS_ASSEMBLERUTILS_H
#include "Assembler.h"
#include "BenchmarkRunner.h"
#include "Target.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/MC/MCInstBuilder.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace llvm {
namespace exegesis {
class MachineFunctionGeneratorBaseTest : public ::testing::Test {
protected:
MachineFunctionGeneratorBaseTest(const std::string &TT,
const std::string &CpuName)
: TT(TT), CpuName(CpuName),
CanExecute(Triple(TT).getArch() ==
Triple(sys::getProcessTriple()).getArch()),
ET(ExegesisTarget::lookup(Triple(TT))) {
assert(ET);
if (!CanExecute) {
outs() << "Skipping execution, host:" << sys::getProcessTriple()
<< ", target:" << TT << "\n";
}
}
template <class... Bs>
inline void Check(ArrayRef<RegisterValue> RegisterInitialValues, MCInst Inst,
Bs... Bytes) {
ExecutableFunction Function =
(Inst.getOpcode() == 0)
? assembleToFunction(RegisterInitialValues, [](FunctionFiller &) {})
: assembleToFunction(RegisterInitialValues,
[Inst](FunctionFiller &Filler) {
Filler.getEntry().addInstruction(Inst);
});
ASSERT_THAT(Function.getFunctionBytes().str(),
testing::ElementsAre(Bytes...));
if (CanExecute) {
BenchmarkRunner::ScratchSpace Scratch;
Function(Scratch.ptr());
}
}
private:
std::unique_ptr<LLVMTargetMachine> createTargetMachine() {
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TT, Error);
EXPECT_TRUE(TheTarget) << Error << " " << TT;
const TargetOptions Options;
TargetMachine *TM = TheTarget->createTargetMachine(TT, CpuName, "", Options,
Reloc::Model::Static);
EXPECT_TRUE(TM) << TT << " " << CpuName;
return std::unique_ptr<LLVMTargetMachine>(
static_cast<LLVMTargetMachine *>(TM));
}
ExecutableFunction
assembleToFunction(ArrayRef<RegisterValue> RegisterInitialValues,
FillFunction Fill) {
SmallString<256> Buffer;
raw_svector_ostream AsmStream(Buffer);
EXPECT_FALSE(assembleToStream(*ET, createTargetMachine(), /*LiveIns=*/{},
RegisterInitialValues, Fill, AsmStream));
return ExecutableFunction(createTargetMachine(),
getObjectFromBuffer(AsmStream.str()));
}
const std::string TT;
const std::string CpuName;
const bool CanExecute;
const ExegesisTarget *const ET;
};
} // namespace exegesis
} // namespace llvm
#endif