// Table lookup instructions
def XLAT : I<0xD7, RawFrm, (outs), (ins), "xlatb", [], IIC_XLAT>;
+let SchedRW = [WriteMicrocoded] in {
// ASCII Adjust After Addition
// sets AL, AH and CF and AF of EFLAGS and uses AL and AF of EFLAGS
def AAA : I<0x37, RawFrm, (outs), (ins), "aaa", [], IIC_AAA>,
// sets AL, CF and AF of EFLAGS and uses AL, CF and AF of EFLAGS
def DAS : I<0x2F, RawFrm, (outs), (ins), "das", [], IIC_DAS>,
Requires<[In32BitMode]>;
+} // SchedRW
+let SchedRW = [WriteSystem] in {
// Check Array Index Against Bounds
def BOUNDS16rm : I<0x62, MRMSrcMem, (outs GR16:$dst), (ins i16mem:$src),
"bound\t{$src, $dst|$dst, $src}", [], IIC_BOUND>, OpSize,
def ARPL16mr : I<0x63, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src),
"arpl\t{$src, $dst|$dst, $src}", [], IIC_ARPL_MEM>,
Requires<[In32BitMode]>;
+} // SchedRW
//===----------------------------------------------------------------------===//
// MOVBE Instructions
// Catch-all for expensive system instructions.
def WriteSystem : SchedWrite;
+// Old microcoded instructions that nobody use.
+def WriteMicrocoded : SchedWrite;
+
//===----------------------------------------------------------------------===//
// Instruction Itinerary classes used for X86
def IIC_DEFAULT : InstrItinClass;