1 //===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- 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 X86 specific subclass of TargetMachine.
12 //===----------------------------------------------------------------------===//
14 #ifndef X86TARGETMACHINE_H
15 #define X86TARGETMACHINE_H
17 #include "llvm/Target/TargetMachine.h"
18 #include "llvm/Target/TargetData.h"
19 #include "llvm/Target/TargetFrameInfo.h"
21 #include "X86ELFWriterInfo.h"
22 #include "X86InstrInfo.h"
23 #include "X86JITInfo.h"
24 #include "X86Subtarget.h"
25 #include "X86ISelLowering.h"
29 class formatted_raw_ostream;
31 class X86TargetMachine : public LLVMTargetMachine {
32 X86Subtarget Subtarget;
33 const TargetData DataLayout; // Calculates type size & alignment
34 TargetFrameInfo FrameInfo;
35 X86InstrInfo InstrInfo;
37 X86TargetLowering TLInfo;
38 X86ELFWriterInfo ELFWriterInfo;
39 Reloc::Model DefRelocModel; // Reloc model before it's overridden.
42 // We have specific defaults for X86.
43 virtual void setCodeModelForJIT();
44 virtual void setCodeModelForStatic();
47 X86TargetMachine(const Target &T, const std::string &TT,
48 const std::string &FS, bool is64Bit);
50 virtual const X86InstrInfo *getInstrInfo() const { return &InstrInfo; }
51 virtual const TargetFrameInfo *getFrameInfo() const { return &FrameInfo; }
52 virtual X86JITInfo *getJITInfo() { return &JITInfo; }
53 virtual const X86Subtarget *getSubtargetImpl() const{ return &Subtarget; }
54 virtual X86TargetLowering *getTargetLowering() const {
55 return const_cast<X86TargetLowering*>(&TLInfo);
57 virtual const X86RegisterInfo *getRegisterInfo() const {
58 return &InstrInfo.getRegisterInfo();
60 virtual const TargetData *getTargetData() const { return &DataLayout; }
61 virtual const X86ELFWriterInfo *getELFWriterInfo() const {
62 return Subtarget.isTargetELF() ? &ELFWriterInfo : 0;
65 /// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are
66 /// 4-byte, 8-byte, and target default. The CIE is hard-coded to indicate that
67 /// the LSDA pointer in the FDE section is an "sdata4", and should be encoded
68 /// as a 4-byte pointer by default. However, some systems may require a
69 /// different size due to bugs or other conditions. We will default to a
70 /// 4-byte encoding unless the system tells us otherwise.
72 /// FIXME: This call-back isn't good! We should be using the correct encoding
73 /// regardless of the system. However, there are some systems which have bugs
74 /// that prevent this from occuring.
75 virtual DwarfLSDAEncoding::Encoding getLSDAEncoding() const;
77 // Set up the pass pipeline.
78 virtual bool addInstSelector(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
79 virtual bool addPreRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
80 virtual bool addPostRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel);
81 virtual bool addCodeEmitter(PassManagerBase &PM, CodeGenOpt::Level OptLevel,
85 /// X86_32TargetMachine - X86 32-bit target machine.
87 class X86_32TargetMachine : public X86TargetMachine {
89 X86_32TargetMachine(const Target &T, const std::string &M,
90 const std::string &FS);
93 /// X86_64TargetMachine - X86 64-bit target machine.
95 class X86_64TargetMachine : public X86TargetMachine {
97 X86_64TargetMachine(const Target &T, const std::string &TT,
98 const std::string &FS);
101 } // End llvm namespace