1 //===- X86InstructionInfo.h - X86 Instruction Information ---------*-C++-*-===//
3 // This file contains the X86 implementation of the MachineInstrInfo class.
5 //===----------------------------------------------------------------------===//
7 #ifndef X86INSTRUCTIONINFO_H
8 #define X86INSTRUCTIONINFO_H
10 #include "llvm/Target/MachineInstrInfo.h"
11 #include "X86RegisterInfo.h"
13 /// X86II - This namespace holds all of the target specific flags that
14 /// instruction info tracks.
18 Void = 1 << 0, // Set if this instruction produces no value
22 class X86InstrInfo : public MachineInstrInfo {
23 const X86RegisterInfo RI;
27 /// getRegisterInfo - MachineInstrInfo is a superset of MRegister info. As
28 /// such, whenever a client has an instance of instruction info, it should
29 /// always be able to get register info as well (through this method).
31 virtual const MRegisterInfo &getRegisterInfo() const { return RI; }
33 /// print - Print out an x86 instruction in GAS syntax
35 virtual void print(const MachineInstr *MI, std::ostream &O) const;
38 //===--------------------------------------------------------------------===//
40 // These are stubs for pure virtual methods that should be factored out of
41 // MachineInstrInfo. We never call them, we don't want them, but we need
42 // stubs so that we can instatiate our class.
44 MachineOpCode getNOPOpCode() const { abort(); }
45 void CreateCodeToLoadConst(const TargetMachine& target, Function* F,
46 Value *V, Instruction *I,
47 std::vector<MachineInstr*>& mvec,
48 MachineCodeForInstruction& mcfi) const { abort(); }
49 void CreateCodeToCopyIntToFloat(const TargetMachine& target,
50 Function* F, Value* val, Instruction* dest,
51 std::vector<MachineInstr*>& mvec,
52 MachineCodeForInstruction& mcfi) const {
55 void CreateCodeToCopyFloatToInt(const TargetMachine& target, Function* F,
56 Value* val, Instruction* dest,
57 std::vector<MachineInstr*>& mvec,
58 MachineCodeForInstruction& mcfi)const {
61 void CreateCopyInstructionsByType(const TargetMachine& target,
62 Function* F, Value* src,
64 std::vector<MachineInstr*>& mvec,
65 MachineCodeForInstruction& mcfi)const {
69 void CreateSignExtensionInstructions(const TargetMachine& target,
70 Function* F, Value* srcVal,
71 Value* destVal, unsigned numLowBits,
72 std::vector<MachineInstr*>& mvec,
73 MachineCodeForInstruction& mcfi) const {
77 void CreateZeroExtensionInstructions(const TargetMachine& target,
78 Function* F, Value* srcVal,
79 Value* destVal, unsigned srcSizeInBits,
80 std::vector<MachineInstr*>& mvec,
81 MachineCodeForInstruction& mcfi) const {