1//===-- AArch64TargetMachine.cpp - Define TargetMachine for AArch64 -------===// 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// This file contains the implementation of the AArch64TargetMachine 11// methods. Principally just setting up the passes needed to generate correct 12// code on this architecture. 13// 14//===----------------------------------------------------------------------===// 15 16#include "AArch64.h" 17#include "AArch64TargetMachine.h" 18#include "MCTargetDesc/AArch64MCTargetDesc.h" 19#include "llvm/PassManager.h" 20#include "llvm/CodeGen/Passes.h" 21#include "llvm/Support/TargetRegistry.h" 22 23using namespace llvm; 24 25extern "C" void LLVMInitializeAArch64Target() { 26 RegisterTargetMachine<AArch64TargetMachine> X(TheAArch64Target); 27} 28 29AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT, 30 StringRef CPU, StringRef FS, 31 const TargetOptions &Options, 32 Reloc::Model RM, CodeModel::Model CM, 33 CodeGenOpt::Level OL) 34 : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL), 35 Subtarget(TT, CPU, FS), 36 InstrInfo(Subtarget), 37 DL("e-p:64:64-i64:64:64-i128:128:128-s0:32:32-f128:128:128-n32:64-S128"), 38 TLInfo(*this), 39 TSInfo(*this), 40 FrameLowering(Subtarget) { 41 initAsmInfo(); 42} 43 44namespace { 45/// AArch64 Code Generator Pass Configuration Options. 46class AArch64PassConfig : public TargetPassConfig { 47public: 48 AArch64PassConfig(AArch64TargetMachine *TM, PassManagerBase &PM) 49 : TargetPassConfig(TM, PM) {} 50 51 AArch64TargetMachine &getAArch64TargetMachine() const { 52 return getTM<AArch64TargetMachine>(); 53 } 54 55 const AArch64Subtarget &getAArch64Subtarget() const { 56 return *getAArch64TargetMachine().getSubtargetImpl(); 57 } 58 59 virtual bool addInstSelector(); 60 virtual bool addPreEmitPass(); 61}; 62} // namespace 63 64TargetPassConfig *AArch64TargetMachine::createPassConfig(PassManagerBase &PM) { 65 return new AArch64PassConfig(this, PM); 66} 67 68bool AArch64PassConfig::addPreEmitPass() { 69 addPass(&UnpackMachineBundlesID); 70 addPass(createAArch64BranchFixupPass()); 71 return true; 72} 73 74bool AArch64PassConfig::addInstSelector() { 75 addPass(createAArch64ISelDAG(getAArch64TargetMachine(), getOptLevel())); 76 77 // For ELF, cleanup any local-dynamic TLS accesses. 78 if (getAArch64Subtarget().isTargetELF() && getOptLevel() != CodeGenOpt::None) 79 addPass(createAArch64CleanupLocalDynamicTLSPass()); 80 81 return false; 82} 83