1//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// Top-level implementation for the MSP430 target. 11// 12//===----------------------------------------------------------------------===// 13 14#include "MSP430TargetMachine.h" 15#include "MSP430.h" 16#include "llvm/CodeGen/Passes.h" 17#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h" 18#include "llvm/CodeGen/TargetPassConfig.h" 19#include "llvm/IR/LegacyPassManager.h" 20#include "llvm/MC/MCAsmInfo.h" 21#include "llvm/Support/TargetRegistry.h" 22using namespace llvm; 23 24extern "C" void LLVMInitializeMSP430Target() { 25 // Register the target. 26 RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target); 27} 28 29static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) { 30 if (!RM.hasValue()) 31 return Reloc::Static; 32 return *RM; 33} 34 35MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT, 36 StringRef CPU, StringRef FS, 37 const TargetOptions &Options, 38 Optional<Reloc::Model> RM, 39 CodeModel::Model CM, 40 CodeGenOpt::Level OL) 41 : LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS, 42 Options, getEffectiveRelocModel(RM), CM, OL), 43 TLOF(make_unique<TargetLoweringObjectFileELF>()), 44 // FIXME: Check DataLayout string. 45 Subtarget(TT, CPU, FS, *this) { 46 initAsmInfo(); 47} 48 49MSP430TargetMachine::~MSP430TargetMachine() {} 50 51namespace { 52/// MSP430 Code Generator Pass Configuration Options. 53class MSP430PassConfig : public TargetPassConfig { 54public: 55 MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM) 56 : TargetPassConfig(TM, PM) {} 57 58 MSP430TargetMachine &getMSP430TargetMachine() const { 59 return getTM<MSP430TargetMachine>(); 60 } 61 62 bool addInstSelector() override; 63 void addPreEmitPass() override; 64}; 65} // namespace 66 67TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) { 68 return new MSP430PassConfig(this, PM); 69} 70 71bool MSP430PassConfig::addInstSelector() { 72 // Install an instruction selector. 73 addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel())); 74 return false; 75} 76 77void MSP430PassConfig::addPreEmitPass() { 78 // Must run branch selection immediately preceding the asm printer. 79 addPass(createMSP430BranchSelectionPass(), false); 80} 81