llvm-mirror/lib/Target/X86/X86InstrInfo.def

//===-- X86InstructionInfo.def - X86 Instruction Information ----*- C++ -*-===//
//
// This file describes all of the instructions that the X86 backend uses.  It
// relys on an external 'I' macro being defined that takes the arguments
// specified below, and is used to make all of the information relevant to an
// instruction be in one place.
//
//===----------------------------------------------------------------------===//

// NOTE: No include guards desired

#ifndef I
#errror "Must define I macro before including X86/X86InstructionInfo.def!"
#endif

// Arguments to be passed into the I macro
//  #1: Enum name - This ends up being the opcode symbol in the X86 namespace
//  #2: Opcode name, as used by the gnu assembler
//  #3: Instruction Flags - This should be a field or'd together that contains
//      constants from the MachineInstrInfo.h file.
//  #4: Target Specific Flags - Another bitfield containing X86 specific flags
//      that we are interested in for each instruction.  These should be flags
//      defined in X86InstrInfo.h in the X86II namespace.
//

// The first instruction must always be the PHI instruction: (FIXME, not yet)
I(PHI         , "phi",                0, 0)

// The second instruction must always be the noop instruction: (FIXME, not yet)
I(NOOP        , "nop",                0, X86II::Void) // nop          90

// Miscellaneous instructions
I(RET         , "ret",       M_RET_FLAG, X86II::Void) // ret          CB

// Move instructions
I(MOVir8      , "movb",               0, 0)           // R = imm8     B0+ rb
I(MOVir16     , "movw",               0, 0)           // R = imm16    B8+ rw
I(MOVir32     , "movl",               0, 0)           // R = imm32    B8+ rd

// Arithmetic instructions
I(ADDrr8      , "addb",               0, 0)           // R8  += R8    00/r
I(ADDrr16     , "addw",               0, 0)           // R16 += R16   01/r
I(ADDrr32     , "addl",               0, 0)           // R32 += R32   02/r


// At this point, I is dead, so undefine the macro
#undef I