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//===-- AArch64TargetMachine.cpp - Define TargetMachine for AArch64 -------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the implementation of the AArch64TargetMachine
// methods. Principally just setting up the passes needed to generate correct
// code on this architecture.
//
//===----------------------------------------------------------------------===//
#include "AArch64.h"
#include "AArch64TargetMachine.h"
#include "MCTargetDesc/AArch64MCTargetDesc.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
extern "C" void LLVMInitializeAArch64Target() {
RegisterTargetMachine<AArch64TargetMachine> X(TheAArch64Target);
}
AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL)
: LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
Subtarget(TT, CPU, FS),
InstrInfo(Subtarget),
DL("e-p:64:64-i64:64:64-i128:128:128-s0:32:32-f128:128:128-n32:64-S128"),
TLInfo(*this),
TSInfo(*this),
FrameLowering(Subtarget) {
initAsmInfo();
}
namespace {
/// AArch64 Code Generator Pass Configuration Options.
class AArch64PassConfig : public TargetPassConfig {
public:
AArch64PassConfig(AArch64TargetMachine *TM, PassManagerBase &PM)
: TargetPassConfig(TM, PM) {}
AArch64TargetMachine &getAArch64TargetMachine() const {
return getTM<AArch64TargetMachine>();
}
const AArch64Subtarget &getAArch64Subtarget() const {
return *getAArch64TargetMachine().getSubtargetImpl();
}
virtual bool addInstSelector();
virtual bool addPreEmitPass();
};
} // namespace
TargetPassConfig *AArch64TargetMachine::createPassConfig(PassManagerBase &PM) {
return new AArch64PassConfig(this, PM);
}
bool AArch64PassConfig::addPreEmitPass() {
addPass(&UnpackMachineBundlesID);
addPass(createAArch64BranchFixupPass());
return true;
}
bool AArch64PassConfig::addInstSelector() {
addPass(createAArch64ISelDAG(getAArch64TargetMachine(), getOptLevel()));
// For ELF, cleanup any local-dynamic TLS accesses.
if (getAArch64Subtarget().isTargetELF() && getOptLevel() != CodeGenOpt::None)
addPass(createAArch64CleanupLocalDynamicTLSPass());
return false;
}
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