forked from OSchip/llvm-project
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Top-level implementation for the MSP430 target.
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//
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//===----------------------------------------------------------------------===//
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#include "MSP430TargetMachine.h"
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#include "MSP430.h"
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#include "llvm/CodeGen/Passes.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/IR/LegacyPassManager.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/Support/TargetRegistry.h"
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using namespace llvm;
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extern "C" void LLVMInitializeMSP430Target() {
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// Register the target.
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RegisterTargetMachine<MSP430TargetMachine> X(getTheMSP430Target());
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}
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static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
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if (!RM.hasValue())
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return Reloc::Static;
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return *RM;
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}
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MSP430TargetMachine::MSP430TargetMachine(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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CodeModel::Model CM,
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CodeGenOpt::Level OL)
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: LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS,
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Options, getEffectiveRelocModel(RM), CM, OL),
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TLOF(make_unique<TargetLoweringObjectFileELF>()),
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// FIXME: Check DataLayout string.
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Subtarget(TT, CPU, FS, *this) {
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initAsmInfo();
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}
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MSP430TargetMachine::~MSP430TargetMachine() {}
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namespace {
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/// MSP430 Code Generator Pass Configuration Options.
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class MSP430PassConfig : public TargetPassConfig {
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public:
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MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
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: TargetPassConfig(TM, PM) {}
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MSP430TargetMachine &getMSP430TargetMachine() const {
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return getTM<MSP430TargetMachine>();
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}
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bool addInstSelector() override;
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void addPreEmitPass() override;
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};
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} // namespace
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TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
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return new MSP430PassConfig(this, PM);
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}
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bool MSP430PassConfig::addInstSelector() {
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// Install an instruction selector.
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addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
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return false;
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}
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void MSP430PassConfig::addPreEmitPass() {
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// Must run branch selection immediately preceding the asm printer.
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addPass(createMSP430BranchSelectionPass(), false);
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}
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