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//===--- CSKYTargetMachine.cpp - Define TargetMachine for CSKY ------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Implements the info about CSKY target spec.
//
//===----------------------------------------------------------------------===//
#include "CSKYTargetMachine.h"
#include "TargetInfo/CSKYTargetInfo.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeCSKYTarget() {
RegisterTargetMachine<CSKYTargetMachine> X(getTheCSKYTarget());
}
static std::string computeDataLayout(const Triple &TT) {
std::string Ret;
// Only support little endian for now.
// TODO: Add support for big endian.
Ret += "e";
// CSKY is always 32-bit target with the CSKYv2 ABI as prefer now.
// It's a 4-byte aligned stack with ELF mangling only.
Ret += "-m:e-S32-p:32:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:32"
"-v128:32:32-a:0:32-Fi32-n32";
return Ret;
}
CSKYTargetMachine::CSKYTargetMachine(const Target &T, const Triple &TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Optional<Reloc::Model> RM,
Optional<CodeModel::Model> CM,
CodeGenOpt::Level OL, bool JIT)
: LLVMTargetMachine(T, computeDataLayout(TT), TT, CPU, FS, Options,
RM.getValueOr(Reloc::Static),
getEffectiveCodeModel(CM, CodeModel::Small), OL),
TLOF(std::make_unique<TargetLoweringObjectFileELF>()) {
initAsmInfo();
}
namespace {
class CSKYPassConfig : public TargetPassConfig {
public:
CSKYPassConfig(CSKYTargetMachine &TM, PassManagerBase &PM)
: TargetPassConfig(TM, PM) {}
CSKYTargetMachine &getCSKYTargetMachine() const {
return getTM<CSKYTargetMachine>();
}
};
} // namespace
TargetPassConfig *CSKYTargetMachine::createPassConfig(PassManagerBase &PM) {
return new CSKYPassConfig(*this, PM);
}
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