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//===-- AssemblerUtils.h ----------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Assembler.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 exegesis {
class MachineFunctionGeneratorBaseTest : public ::testing::Test {
protected:
MachineFunctionGeneratorBaseTest(const std::string &TT,
const std::string &CpuName)
: TT(TT), CpuName(CpuName),
CanExecute(llvm::Triple(TT).getArch() ==
llvm::Triple(llvm::sys::getProcessTriple()).getArch()) {
if (!CanExecute) {
llvm::outs() << "Skipping execution, host:"
<< llvm::sys::getProcessTriple() << ", target:" << TT
<< "\n";
}
}
template <class... Bs> inline void Check(llvm::MCInst MCInst, Bs... Bytes) {
CheckWithSetup(ExegesisTarget::getDefault(), {}, MCInst, Bytes...);
}
template <class... Bs>
inline void CheckWithSetup(const ExegesisTarget &ET,
llvm::ArrayRef<unsigned> RegsToDef,
llvm::MCInst MCInst, Bs... Bytes) {
ExecutableFunction Function =
(MCInst.getOpcode() == 0) ? assembleToFunction(ET, RegsToDef, {})
: assembleToFunction(ET, RegsToDef, {MCInst});
ASSERT_THAT(Function.getFunctionBytes().str(),
testing::ElementsAre(Bytes...));
if (CanExecute)
Function();
}
private:
std::unique_ptr<llvm::LLVMTargetMachine> createTargetMachine() {
std::string Error;
const llvm::Target *TheTarget =
llvm::TargetRegistry::lookupTarget(TT, Error);
EXPECT_TRUE(TheTarget) << Error << " " << TT;
const llvm::TargetOptions Options;
llvm::TargetMachine *TM = TheTarget->createTargetMachine(
TT, CpuName, "", Options, llvm::Reloc::Model::Static);
EXPECT_TRUE(TM) << TT << " " << CpuName;
return std::unique_ptr<llvm::LLVMTargetMachine>(
static_cast<llvm::LLVMTargetMachine *>(TM));
}
ExecutableFunction
assembleToFunction(const ExegesisTarget &ET,
llvm::ArrayRef<unsigned> RegsToDef,
llvm::ArrayRef<llvm::MCInst> Instructions) {
llvm::SmallString<256> Buffer;
llvm::raw_svector_ostream AsmStream(Buffer);
assembleToStream(ET, createTargetMachine(), RegsToDef, Instructions,
AsmStream);
return ExecutableFunction(createTargetMachine(),
getObjectFromBuffer(AsmStream.str()));
}
const std::string TT;
const std::string CpuName;
const bool CanExecute;
};
} // namespace exegesis
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