| //===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Top-level implementation for the MSP430 target. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "MSP430TargetMachine.h" |
| #include "MSP430.h" |
| #include "llvm/CodeGen/Passes.h" |
| #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h" |
| #include "llvm/CodeGen/TargetPassConfig.h" |
| #include "llvm/IR/LegacyPassManager.h" |
| #include "llvm/MC/MCAsmInfo.h" |
| #include "llvm/Support/TargetRegistry.h" |
| using namespace llvm; |
| |
| extern "C" void LLVMInitializeMSP430Target() { |
| // Register the target. |
| RegisterTargetMachine<MSP430TargetMachine> X(getTheMSP430Target()); |
| } |
| |
| static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) { |
| if (!RM.hasValue()) |
| return Reloc::Static; |
| return *RM; |
| } |
| |
| static std::string computeDataLayout(const Triple &TT, StringRef CPU, |
| const TargetOptions &Options) { |
| return "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16"; |
| } |
| |
| MSP430TargetMachine::MSP430TargetMachine(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, CPU, Options), TT, CPU, FS, |
| Options, getEffectiveRelocModel(RM), |
| getEffectiveCodeModel(CM, CodeModel::Small), OL), |
| TLOF(make_unique<TargetLoweringObjectFileELF>()), |
| Subtarget(TT, CPU, FS, *this) { |
| initAsmInfo(); |
| } |
| |
| MSP430TargetMachine::~MSP430TargetMachine() {} |
| |
| namespace { |
| /// MSP430 Code Generator Pass Configuration Options. |
| class MSP430PassConfig : public TargetPassConfig { |
| public: |
| MSP430PassConfig(MSP430TargetMachine &TM, PassManagerBase &PM) |
| : TargetPassConfig(TM, PM) {} |
| |
| MSP430TargetMachine &getMSP430TargetMachine() const { |
| return getTM<MSP430TargetMachine>(); |
| } |
| |
| bool addInstSelector() override; |
| void addPreEmitPass() override; |
| }; |
| } // namespace |
| |
| TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) { |
| return new MSP430PassConfig(*this, PM); |
| } |
| |
| bool MSP430PassConfig::addInstSelector() { |
| // Install an instruction selector. |
| addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel())); |
| return false; |
| } |
| |
| void MSP430PassConfig::addPreEmitPass() { |
| // Must run branch selection immediately preceding the asm printer. |
| addPass(createMSP430BranchSelectionPass(), false); |
| } |