1 //===-- AArch64TargetMachine.cpp - Define TargetMachine for AArch64 -------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 //===----------------------------------------------------------------------===//
14 #include "AArch64TargetMachine.h"
15 #include "MCTargetDesc/AArch64MCTargetDesc.h"
16 #include "llvm/PassManager.h"
17 #include "llvm/CodeGen/Passes.h"
18 #include "llvm/Support/TargetRegistry.h"
22 extern "C" void LLVMInitializeAArch64Target() {
23 RegisterTargetMachine<AArch64TargetMachine> X(TheAArch64Target);
26 AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT,
27 StringRef CPU, StringRef FS,
28 const TargetOptions &Options,
29 Reloc::Model RM, CodeModel::Model CM,
31 : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
32 Subtarget(TT, CPU, FS),
34 DL("e-p:64:64-i64:64:64-i128:128:128-s0:32:32-f128:128:128-n32:64-S128"),
37 FrameLowering(Subtarget) {
41 /// AArch64 Code Generator Pass Configuration Options.
42 class AArch64PassConfig : public TargetPassConfig {
44 AArch64PassConfig(AArch64TargetMachine *TM, PassManagerBase &PM)
45 : TargetPassConfig(TM, PM) {}
47 AArch64TargetMachine &getAArch64TargetMachine() const {
48 return getTM<AArch64TargetMachine>();
51 const AArch64Subtarget &getAArch64Subtarget() const {
52 return *getAArch64TargetMachine().getSubtargetImpl();
55 virtual bool addInstSelector();
56 virtual bool addPreEmitPass();
60 TargetPassConfig *AArch64TargetMachine::createPassConfig(PassManagerBase &PM) {
61 return new AArch64PassConfig(this, PM);
64 bool AArch64PassConfig::addPreEmitPass() {
65 addPass(&UnpackMachineBundlesID);
66 addPass(createAArch64ConstantIslandPass());
70 bool AArch64PassConfig::addInstSelector() {
71 addPass(createAArch64ISelDAG(getAArch64TargetMachine(), getOptLevel()));
73 // For ELF, cleanup any local-dynamic TLS accesses.
74 if (getAArch64Subtarget().isTargetELF() && getOptLevel() != CodeGenOpt::None)
75 addPass(createAArch64CleanupLocalDynamicTLSPass());