MBlazeTargetMachine.cpp [plain text]
#include "MBlaze.h"
#include "MBlazeMCAsmInfo.h"
#include "MBlazeTargetMachine.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegistry.h"
using namespace llvm;
static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
Triple TheTriple(TT);
switch (TheTriple.getOS()) {
default:
return new MBlazeMCAsmInfo();
}
}
static MCStreamer *createMCStreamer(const Target &T, const std::string &TT,
MCContext &Ctx, TargetAsmBackend &TAB,
raw_ostream &_OS,
MCCodeEmitter *_Emitter,
bool RelaxAll,
bool NoExecStack) {
Triple TheTriple(TT);
if (TheTriple.isOSDarwin()) {
llvm_unreachable("MBlaze does not support Darwin MACH-O format");
return NULL;
}
if (TheTriple.isOSWindows()) {
llvm_unreachable("MBlaze does not support Windows COFF format");
return NULL;
}
return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll, NoExecStack);
}
extern "C" void LLVMInitializeMBlazeTarget() {
RegisterTargetMachine<MBlazeTargetMachine> X(TheMBlazeTarget);
RegisterAsmInfoFn A(TheMBlazeTarget, createMCAsmInfo);
TargetRegistry::RegisterCodeEmitter(TheMBlazeTarget,
llvm::createMBlazeMCCodeEmitter);
TargetRegistry::RegisterAsmBackend(TheMBlazeTarget,
createMBlazeAsmBackend);
TargetRegistry::RegisterObjectStreamer(TheMBlazeTarget,
createMCStreamer);
}
MBlazeTargetMachine::
MBlazeTargetMachine(const Target &T, const std::string &TT,
const std::string &FS):
LLVMTargetMachine(T, TT),
Subtarget(TT, FS),
DataLayout("E-p:32:32:32-i8:8:8-i16:16:16"),
InstrInfo(*this),
FrameLowering(Subtarget),
TLInfo(*this), TSInfo(*this), ELFWriterInfo(*this),
InstrItins(Subtarget.getInstrItineraryData()) {
if (getRelocationModel() == Reloc::Default) {
setRelocationModel(Reloc::Static);
}
if (getCodeModel() == CodeModel::Default)
setCodeModel(CodeModel::Small);
}
bool MBlazeTargetMachine::addInstSelector(PassManagerBase &PM,
CodeGenOpt::Level OptLevel) {
PM.add(createMBlazeISelDag(*this));
return false;
}
bool MBlazeTargetMachine::addPreEmitPass(PassManagerBase &PM,
CodeGenOpt::Level OptLevel) {
PM.add(createMBlazeDelaySlotFillerPass(*this));
return true;
}