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
23 using namespace llvm;
24
LLVMInitializeAArch64Target()25 extern "C" void LLVMInitializeAArch64Target() {
26 RegisterTargetMachine<AArch64TargetMachine> X(TheAArch64Target);
27 }
28
AArch64TargetMachine(const Target & T,StringRef TT,StringRef CPU,StringRef FS,const TargetOptions & Options,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)29 AArch64TargetMachine::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 }
42
43 namespace {
44 /// AArch64 Code Generator Pass Configuration Options.
45 class AArch64PassConfig : public TargetPassConfig {
46 public:
AArch64PassConfig(AArch64TargetMachine * TM,PassManagerBase & PM)47 AArch64PassConfig(AArch64TargetMachine *TM, PassManagerBase &PM)
48 : TargetPassConfig(TM, PM) {}
49
getAArch64TargetMachine() const50 AArch64TargetMachine &getAArch64TargetMachine() const {
51 return getTM<AArch64TargetMachine>();
52 }
53
getAArch64Subtarget() const54 const AArch64Subtarget &getAArch64Subtarget() const {
55 return *getAArch64TargetMachine().getSubtargetImpl();
56 }
57
58 virtual bool addInstSelector();
59 virtual bool addPreEmitPass();
60 };
61 } // namespace
62
createPassConfig(PassManagerBase & PM)63 TargetPassConfig *AArch64TargetMachine::createPassConfig(PassManagerBase &PM) {
64 return new AArch64PassConfig(this, PM);
65 }
66
addPreEmitPass()67 bool AArch64PassConfig::addPreEmitPass() {
68 addPass(&UnpackMachineBundlesID);
69 addPass(createAArch64BranchFixupPass());
70 return true;
71 }
72
addInstSelector()73 bool AArch64PassConfig::addInstSelector() {
74 addPass(createAArch64ISelDAG(getAArch64TargetMachine(), getOptLevel()));
75
76 // For ELF, cleanup any local-dynamic TLS accesses.
77 if (getAArch64Subtarget().isTargetELF() && getOptLevel() != CodeGenOpt::None)
78 addPass(createAArch64CleanupLocalDynamicTLSPass());
79
80 return false;
81 }
82