mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
//===-- MBlazeTargetMachine.cpp - Define TargetMachine for MBlaze ---------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implements the info about MBlaze target spec.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#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) {
|
|
Triple TheTriple(TT);
|
|
switch (TheTriple.getOS()) {
|
|
case Triple::Darwin:
|
|
llvm_unreachable("MBlaze does not support Darwin MACH-O format");
|
|
return NULL;
|
|
case Triple::MinGW32:
|
|
case Triple::MinGW64:
|
|
case Triple::Cygwin:
|
|
case Triple::Win32:
|
|
llvm_unreachable("MBlaze does not support Windows COFF format");
|
|
return NULL;
|
|
default:
|
|
return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
|
|
}
|
|
}
|
|
|
|
|
|
extern "C" void LLVMInitializeMBlazeTarget() {
|
|
// Register the target.
|
|
RegisterTargetMachine<MBlazeTargetMachine> X(TheMBlazeTarget);
|
|
|
|
// Register the target asm info.
|
|
RegisterAsmInfoFn A(TheMBlazeTarget, createMCAsmInfo);
|
|
|
|
// Register the MC code emitter
|
|
TargetRegistry::RegisterCodeEmitter(TheMBlazeTarget,
|
|
llvm::createMBlazeMCCodeEmitter);
|
|
|
|
// Register the asm backend
|
|
TargetRegistry::RegisterAsmBackend(TheMBlazeTarget,
|
|
createMBlazeAsmBackend);
|
|
|
|
// Register the object streamer
|
|
TargetRegistry::RegisterObjectStreamer(TheMBlazeTarget,
|
|
createMCStreamer);
|
|
|
|
}
|
|
|
|
// DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
|
|
// The stack is always 8 byte aligned
|
|
// On function prologue, the stack is created by decrementing
|
|
// its pointer. Once decremented, all references are done with positive
|
|
// offset from the stack/frame pointer, using StackGrowsUp enables
|
|
// an easier handling.
|
|
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),
|
|
FrameInfo(Subtarget),
|
|
TLInfo(*this), TSInfo(*this), ELFWriterInfo(*this) {
|
|
if (getRelocationModel() == Reloc::Default) {
|
|
setRelocationModel(Reloc::Static);
|
|
}
|
|
|
|
if (getCodeModel() == CodeModel::Default)
|
|
setCodeModel(CodeModel::Small);
|
|
}
|
|
|
|
// Install an instruction selector pass using
|
|
// the ISelDag to gen MBlaze code.
|
|
bool MBlazeTargetMachine::addInstSelector(PassManagerBase &PM,
|
|
CodeGenOpt::Level OptLevel) {
|
|
PM.add(createMBlazeISelDag(*this));
|
|
return false;
|
|
}
|
|
|
|
// Implemented by targets that want to run passes immediately before
|
|
// machine code is emitted. return true if -print-machineinstrs should
|
|
// print out the code after the passes.
|
|
bool MBlazeTargetMachine::addPreEmitPass(PassManagerBase &PM,
|
|
CodeGenOpt::Level OptLevel) {
|
|
PM.add(createMBlazeDelaySlotFillerPass(*this));
|
|
return true;
|
|
}
|