1 //===-- PPCTargetMachine.h - Define TargetMachine for PowerPC -----*- C++ -*-=//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the PowerPC specific subclass of TargetMachine.
12 //===----------------------------------------------------------------------===//
14 #ifndef PPC_TARGETMACHINE_H
15 #define PPC_TARGETMACHINE_H
17 #include "PPCFrameInfo.h"
18 #include "PPCSubtarget.h"
19 #include "PPCJITInfo.h"
20 #include "PPCInstrInfo.h"
21 #include "PPCISelLowering.h"
22 #include "llvm/Target/TargetMachine.h"
23 #include "llvm/Target/TargetData.h"
29 /// PPCTargetMachine - Common code between 32-bit and 64-bit PowerPC targets.
31 class PPCTargetMachine : public LLVMTargetMachine {
32 PPCSubtarget Subtarget;
33 const TargetData DataLayout; // Calculates type size & alignment
34 PPCInstrInfo InstrInfo;
35 PPCFrameInfo FrameInfo;
37 PPCTargetLowering TLInfo;
38 InstrItineraryData InstrItins;
41 PPCTargetMachine(const Target &T, const std::string &TT,
42 const std::string &FS, bool is64Bit);
44 virtual const PPCInstrInfo *getInstrInfo() const { return &InstrInfo; }
45 virtual const PPCFrameInfo *getFrameInfo() const { return &FrameInfo; }
46 virtual PPCJITInfo *getJITInfo() { return &JITInfo; }
47 virtual PPCTargetLowering *getTargetLowering() const {
48 return const_cast<PPCTargetLowering*>(&TLInfo);
50 virtual const PPCRegisterInfo *getRegisterInfo() const {
51 return &InstrInfo.getRegisterInfo();
54 virtual const TargetData *getTargetData() const { return &DataLayout; }
55 virtual const PPCSubtarget *getSubtargetImpl() const { return &Subtarget; }
56 virtual const InstrItineraryData getInstrItineraryData() const {
60 /// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are
61 /// 4-byte, 8-byte, and target default. The CIE is hard-coded to indicate that
62 /// the LSDA pointer in the FDE section is an "sdata4", and should be encoded
63 /// as a 4-byte pointer by default. However, some systems may require a
64 /// different size due to bugs or other conditions. We will default to a
65 /// 4-byte encoding unless the system tells us otherwise.
67 /// FIXME: This call-back isn't good! We should be using the correct encoding
68 /// regardless of the system. However, there are some systems which have bugs
69 /// that prevent this from occuring.
70 virtual DwarfLSDAEncoding::Encoding getLSDAEncoding() const;
72 // Pass Pipeline Configuration
73 virtual bool addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
74 virtual bool addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
75 virtual bool addCodeEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel,
77 virtual bool getEnableTailMergeDefault() const;
80 /// PPC32TargetMachine - PowerPC 32-bit target machine.
82 class PPC32TargetMachine : public PPCTargetMachine {
84 PPC32TargetMachine(const Target &T, const std::string &TT,
85 const std::string &FS);
88 /// PPC64TargetMachine - PowerPC 64-bit target machine.
90 class PPC64TargetMachine : public PPCTargetMachine {
92 PPC64TargetMachine(const Target &T, const std::string &TT,
93 const std::string &FS);
96 } // end namespace llvm