llvm-6502/lib/Target/PowerPC/PPCTargetMachine.h
Bill Wendling 48814681d7 - Add getLSDAEncoding to the PowerPC backend.
- Greatly improve the comments to the getLSDAEncoding method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93796 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-18 22:36:35 +00:00

117 lines
4.5 KiB
C++

//===-- PPCTargetMachine.h - Define TargetMachine for PowerPC -----*- C++ -*-=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the PowerPC specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
#ifndef PPC_TARGETMACHINE_H
#define PPC_TARGETMACHINE_H
#include "PPCFrameInfo.h"
#include "PPCSubtarget.h"
#include "PPCJITInfo.h"
#include "PPCInstrInfo.h"
#include "PPCISelLowering.h"
#include "PPCMachOWriterInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetData.h"
namespace llvm {
class PassManager;
class GlobalValue;
/// PPCTargetMachine - Common code between 32-bit and 64-bit PowerPC targets.
///
class PPCTargetMachine : public LLVMTargetMachine {
PPCSubtarget Subtarget;
const TargetData DataLayout; // Calculates type size & alignment
PPCInstrInfo InstrInfo;
PPCFrameInfo FrameInfo;
PPCJITInfo JITInfo;
PPCTargetLowering TLInfo;
InstrItineraryData InstrItins;
PPCMachOWriterInfo MachOWriterInfo;
public:
PPCTargetMachine(const Target &T, const std::string &TT,
const std::string &FS, bool is64Bit);
virtual const PPCInstrInfo *getInstrInfo() const { return &InstrInfo; }
virtual const PPCFrameInfo *getFrameInfo() const { return &FrameInfo; }
virtual PPCJITInfo *getJITInfo() { return &JITInfo; }
virtual PPCTargetLowering *getTargetLowering() const {
return const_cast<PPCTargetLowering*>(&TLInfo);
}
virtual const PPCRegisterInfo *getRegisterInfo() const {
return &InstrInfo.getRegisterInfo();
}
virtual const TargetData *getTargetData() const { return &DataLayout; }
virtual const PPCSubtarget *getSubtargetImpl() const { return &Subtarget; }
virtual const InstrItineraryData getInstrItineraryData() const {
return InstrItins;
}
virtual const PPCMachOWriterInfo *getMachOWriterInfo() const {
return &MachOWriterInfo;
}
/// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are
/// 4-byte, 8-byte, and target default. The CIE is hard-coded to indicate that
/// the LSDA pointer in the FDE section is an "sdata4", and should be encoded
/// as a 4-byte pointer by default. However, some systems may require a
/// different size due to bugs or other conditions. We will default to a
/// 4-byte encoding unless the system tells us otherwise.
///
/// FIXME: This call-back isn't good! We should be using the correct encoding
/// regardless of the system. However, there are some systems which have bugs
/// that prevent this from occuring.
virtual DwarfLSDAEncoding::Encoding getLSDAEncoding() const;
// Pass Pipeline Configuration
virtual bool addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
virtual bool addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
virtual bool addCodeEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel,
MachineCodeEmitter &MCE);
virtual bool addCodeEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel,
JITCodeEmitter &JCE);
virtual bool addCodeEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel,
ObjectCodeEmitter &OCE);
virtual bool addSimpleCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
MachineCodeEmitter &MCE);
virtual bool addSimpleCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
JITCodeEmitter &JCE);
virtual bool addSimpleCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
ObjectCodeEmitter &OCE);
virtual bool getEnableTailMergeDefault() const;
};
/// PPC32TargetMachine - PowerPC 32-bit target machine.
///
class PPC32TargetMachine : public PPCTargetMachine {
public:
PPC32TargetMachine(const Target &T, const std::string &TT,
const std::string &FS);
};
/// PPC64TargetMachine - PowerPC 64-bit target machine.
///
class PPC64TargetMachine : public PPCTargetMachine {
public:
PPC64TargetMachine(const Target &T, const std::string &TT,
const std::string &FS);
};
} // end namespace llvm
#endif