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//===-- MSP430TargetMachine.cpp - Define TargetMachine for MSP430 ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Top-level implementation for the MSP430 target.
//
//===----------------------------------------------------------------------===//
#include "MSP430TargetMachine.h"
#include "MSP430.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
extern "C" void LLVMInitializeMSP430Target() {
// Register the target.
RegisterTargetMachine<MSP430TargetMachine> X(TheMSP430Target);
}
static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
if (!RM.hasValue())
return Reloc::Static;
return *RM;
}
MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Optional<Reloc::Model> RM,
CodeModel::Model CM,
CodeGenOpt::Level OL)
: LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS,
Options, getEffectiveRelocModel(RM), CM, OL),
TLOF(make_unique<TargetLoweringObjectFileELF>()),
// FIXME: Check DataLayout string.
Subtarget(TT, CPU, FS, *this) {
initAsmInfo();
}
MSP430TargetMachine::~MSP430TargetMachine() {}
namespace {
/// MSP430 Code Generator Pass Configuration Options.
class MSP430PassConfig : public TargetPassConfig {
public:
MSP430PassConfig(MSP430TargetMachine *TM, PassManagerBase &PM)
: TargetPassConfig(TM, PM) {}
MSP430TargetMachine &getMSP430TargetMachine() const {
return getTM<MSP430TargetMachine>();
}
bool addInstSelector() override;
void addPreEmitPass() override;
};
} // namespace
TargetPassConfig *MSP430TargetMachine::createPassConfig(PassManagerBase &PM) {
return new MSP430PassConfig(this, PM);
}
bool MSP430PassConfig::addInstSelector() {
// Install an instruction selector.
addPass(createMSP430ISelDag(getMSP430TargetMachine(), getOptLevel()));
return false;
}
void MSP430PassConfig::addPreEmitPass() {
// Must run branch selection immediately preceding the asm printer.
addPass(createMSP430BranchSelectionPass(), false);
}
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