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/IR/LegacyPassManager.h" 19 #include "llvm/MC/MCAsmInfo.h" 20 #include "llvm/Support/TargetRegistry.h" 21 using namespace llvm; 22 23 extern "C" void LLVMInitializeMSP430Target() { 24 // Register the target. 25 RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target); 26 } 27 28 MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT, 29 StringRef CPU, StringRef FS, 30 const TargetOptions &Options, 31 Reloc::Model RM, CodeModel::Model CM, 32 CodeGenOpt::Level OL) 33 : LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS, 34 Options, RM, CM, OL), 35 TLOF(make_unique<TargetLoweringObjectFileELF>()), 36 // FIXME: Check DataLayout string. 37 Subtarget(TT, CPU, FS, *this) { 38 initAsmInfo(); 39 } 40 41 MSP430TargetMachine::~MSP430TargetMachine() {} 42 43 namespace { 44 /// MSP430 Code Generator Pass Configuration Options. 45 class MSP430PassConfig : public TargetPassConfig { 46 public: 47 MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM) 48 : TargetPassConfig(TM, PM) {} 49 50 MSP430TargetMachine &getMSP430TargetMachine() const { 51 return getTM<MSP430TargetMachine>(); 52 } 53 54 bool addInstSelector() override; 55 void addPreEmitPass() override; 56 }; 57 } // namespace 58 59 TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) { 60 return new MSP430PassConfig(this, PM); 61 } 62 63 bool MSP430PassConfig::addInstSelector() { 64 // Install an instruction selector. 65 addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel())); 66 return false; 67 } 68 69 void MSP430PassConfig::addPreEmitPass() { 70 // Must run branch selection immediately preceding the asm printer. 71 addPass(createMSP430BranchSelectionPass(), false); 72 } 73
