69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
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//===--- CSKYTargetMachine.cpp - Define TargetMachine for CSKY ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Implements the info about CSKY target spec.
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//
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//===----------------------------------------------------------------------===//
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#include "CSKYTargetMachine.h"
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#include "TargetInfo/CSKYTargetInfo.h"
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#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
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#include "llvm/CodeGen/TargetPassConfig.h"
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#include "llvm/Support/TargetRegistry.h"
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using namespace llvm;
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extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeCSKYTarget() {
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RegisterTargetMachine<CSKYTargetMachine> X(getTheCSKYTarget());
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}
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static std::string computeDataLayout(const Triple &TT) {
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std::string Ret;
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// Only support little endian for now.
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// TODO: Add support for big endian.
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Ret += "e";
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// CSKY is always 32-bit target with the CSKYv2 ABI as prefer now.
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// It's a 4-byte aligned stack with ELF mangling only.
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Ret += "-m:e-S32-p:32:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:32"
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"-v128:32:32-a:0:32-Fi32-n32";
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return Ret;
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}
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CSKYTargetMachine::CSKYTargetMachine(const Target &T, const Triple &TT,
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StringRef CPU, StringRef FS,
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const TargetOptions &Options,
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Optional<Reloc::Model> RM,
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Optional<CodeModel::Model> CM,
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CodeGenOpt::Level OL, bool JIT)
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: LLVMTargetMachine(T, computeDataLayout(TT), TT, CPU, FS, Options,
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RM.getValueOr(Reloc::Static),
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getEffectiveCodeModel(CM, CodeModel::Small), OL),
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TLOF(std::make_unique<TargetLoweringObjectFileELF>()) {
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initAsmInfo();
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}
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namespace {
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class CSKYPassConfig : public TargetPassConfig {
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public:
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CSKYPassConfig(CSKYTargetMachine &TM, PassManagerBase &PM)
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: TargetPassConfig(TM, PM) {}
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CSKYTargetMachine &getCSKYTargetMachine() const {
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return getTM<CSKYTargetMachine>();
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}
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};
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} // namespace
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TargetPassConfig *CSKYTargetMachine::createPassConfig(PassManagerBase &PM) {
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return new CSKYPassConfig(*this, PM);
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}
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