1 //===-- X86InstructionInfo.def - X86 Instruction Information ----*- C++ -*-===//
3 // This file describes all of the instructions that the X86 backend uses. It
4 // relys on an external 'I' macro being defined that takes the arguments
5 // specified below, and is used to make all of the information relevant to an
6 // instruction be in one place.
8 // Note that X86 Instructions always have the destination register listed as
9 // operand 0, unless it does not produce a value (in which case the TSFlags will
10 // include X86II::Void).
12 //===----------------------------------------------------------------------===//
14 // NOTE: No include guards desired
17 #errror "Must define I macro before including X86/X86InstructionInfo.def!"
20 // Arguments to be passed into the I macro
21 // #1: Enum name - This ends up being the opcode symbol in the X86 namespace
22 // #2: Opcode name, as used by the gnu assembler
23 // #3: Instruction Flags - This should be a field or'd together that contains
24 // constants from the MachineInstrInfo.h file.
25 // #4: Target Specific Flags - Another bitfield containing X86 specific flags
26 // that we are interested in for each instruction. These should be flags
27 // defined in X86InstrInfo.h in the X86II namespace.
30 // The first instruction must always be the PHI instruction: (FIXME, not yet)
33 // The second instruction must always be the noop instruction: (FIXME, not yet)
34 I(NOOP , "nop", 0, X86II::Void) // nop 90
36 // Miscellaneous instructions
37 I(RET , "ret", M_RET_FLAG, X86II::Void) // ret CB
40 I(MOVir8 , "movb", 0, 0) // R = imm8 B0+ rb
41 I(MOVir16 , "movw", 0, 0) // R = imm16 B8+ rw
42 I(MOVir32 , "movl", 0, 0) // R = imm32 B8+ rd
44 // Arithmetic instructions
45 I(ADDrr8 , "addb", 0, 0) // R8 += R8 00/r
46 I(ADDrr16 , "addw", 0, 0) // R16 += R16 01/r
47 I(ADDrr32 , "addl", 0, 0) // R32 += R32 02/r
50 // At this point, I is dead, so undefine the macro