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 //===----------------------------------------------------------------------===//
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.
14 //===----------------------------------------------------------------------===//
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"
25 extern "C" void LLVMInitializeAArch64Target() {
26 RegisterTargetMachine<AArch64TargetMachine> X(TheAArch64Target);
29 AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT,
30 StringRef CPU, StringRef FS,
31 const TargetOptions &Options,
32 Reloc::Model RM, CodeModel::Model CM,
34 : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
35 Subtarget(TT, CPU, FS),
37 DL("e-p:64:64-i64:64:64-i128:128:128-s0:32:32-f128:128:128-n32:64-S128"),
40 FrameLowering(Subtarget) {
44 /// AArch64 Code Generator Pass Configuration Options.
45 class AArch64PassConfig : public TargetPassConfig {
47 AArch64PassConfig(AArch64TargetMachine *TM, PassManagerBase &PM)
48 : TargetPassConfig(TM, PM) {}
50 AArch64TargetMachine &getAArch64TargetMachine() const {
51 return getTM<AArch64TargetMachine>();
54 const AArch64Subtarget &getAArch64Subtarget() const {
55 return *getAArch64TargetMachine().getSubtargetImpl();
58 virtual bool addInstSelector();
59 virtual bool addPreEmitPass();
63 TargetPassConfig *AArch64TargetMachine::createPassConfig(PassManagerBase &PM) {
64 return new AArch64PassConfig(this, PM);
67 bool AArch64PassConfig::addPreEmitPass() {
68 addPass(&UnpackMachineBundlesID);
69 addPass(createAArch64BranchFixupPass());
73 bool AArch64PassConfig::addInstSelector() {
74 addPass(createAArch64ISelDAG(getAArch64TargetMachine(), getOptLevel()));
76 // For ELF, cleanup any local-dynamic TLS accesses.
77 if (getAArch64Subtarget().isTargetELF() && getOptLevel() != CodeGenOpt::None)
78 addPass(createAArch64CleanupLocalDynamicTLSPass());