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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x86
import (
"cmd/compile/internal/gc"
"cmd/internal/obj"
"cmd/internal/obj/x86"
)
const (
LeftRdwr uint32 = gc.LeftRead | gc.LeftWrite
RightRdwr uint32 = gc.RightRead | gc.RightWrite
)
// This table gives the basic information about instruction
// generated by the compiler and processed in the optimizer.
// See opt.h for bit definitions.
//
// Instructions not generated need not be listed.
// As an exception to that rule, we typically write down all the
// size variants of an operation even if we just use a subset.
//
// The table is formatted for 8-space tabs.
var progtable = [x86.ALAST & obj.AMask]gc.ProgInfo{
obj.ATYPE: {Flags: gc.Pseudo | gc.Skip},
obj.ATEXT: {Flags: gc.Pseudo},
obj.AFUNCDATA: {Flags: gc.Pseudo},
obj.APCDATA: {Flags: gc.Pseudo},
obj.AUNDEF: {Flags: gc.Break},
obj.AUSEFIELD: {Flags: gc.OK},
obj.AVARDEF: {Flags: gc.Pseudo | gc.RightWrite},
obj.AVARKILL: {Flags: gc.Pseudo | gc.RightWrite},
obj.AVARLIVE: {Flags: gc.Pseudo | gc.LeftRead},
// NOP is an internal no-op that also stands
// for USED and SET annotations, not the Intel opcode.
obj.ANOP: {Flags: gc.LeftRead | gc.RightWrite},
x86.AADCL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry},
x86.AADCW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry},
x86.AADDB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AADDL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AADDW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AADDSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr},
x86.AADDSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr},
x86.AANDB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AANDL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AANDW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry},
obj.ACALL: {Flags: gc.RightAddr | gc.Call | gc.KillCarry},
x86.ACDQ & obj.AMask: {Flags: gc.OK},
x86.ACWD & obj.AMask: {Flags: gc.OK},
x86.ACLD & obj.AMask: {Flags: gc.OK},
x86.ASTD & obj.AMask: {Flags: gc.OK},
x86.ACMPB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ACMPL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ACMPW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ACOMISD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ACOMISS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ACVTSD2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTSD2SS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTSL2SD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTSL2SS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTSS2SD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTSS2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTTSD2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ACVTTSS2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.ADECB & obj.AMask: {Flags: gc.SizeB | RightRdwr},
x86.ADECL & obj.AMask: {Flags: gc.SizeL | RightRdwr},
x86.ADECW & obj.AMask: {Flags: gc.SizeW | RightRdwr},
x86.ADIVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry},
x86.ADIVL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry},
x86.ADIVW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry},
x86.ADIVSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr},
x86.ADIVSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr},
x86.AFLDCW & obj.AMask: {Flags: gc.SizeW | gc.LeftAddr},
x86.AFSTCW & obj.AMask: {Flags: gc.SizeW | gc.RightAddr},
x86.AFSTSW & obj.AMask: {Flags: gc.SizeW | gc.RightAddr | gc.RightWrite},
x86.AFADDD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFADDDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFADDF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr},
x86.AFCOMD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightRead},
x86.AFCOMDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightRead},
x86.AFCOMDPP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightRead},
x86.AFCOMF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightRead},
x86.AFCOMFP & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightRead},
// NOTE(khr): don't use FUCOMI* instructions, not available
// on Pentium MMX. See issue 13923.
//x86.AFUCOMIP&obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightRead},
x86.AFUCOMP & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead},
x86.AFUCOMPP & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead},
x86.AFCHS & obj.AMask: {Flags: gc.SizeD | RightRdwr}, // also SizeF
x86.AFDIVDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFDIVF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr},
x86.AFDIVD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFDIVRDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFDIVRF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr},
x86.AFDIVRD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFXCHD & obj.AMask: {Flags: gc.SizeD | LeftRdwr | RightRdwr},
x86.AFSUBD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFSUBDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFSUBF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr},
x86.AFSUBRD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFSUBRDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFSUBRF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr},
x86.AFMOVD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightWrite},
x86.AFMOVF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightWrite},
x86.AFMOVL & obj.AMask: {Flags: gc.SizeL | gc.LeftAddr | gc.RightWrite},
x86.AFMOVW & obj.AMask: {Flags: gc.SizeW | gc.LeftAddr | gc.RightWrite},
x86.AFMOVV & obj.AMask: {Flags: gc.SizeQ | gc.LeftAddr | gc.RightWrite},
// These instructions are marked as RightAddr
// so that the register optimizer does not try to replace the
// memory references with integer register references.
// But they do not use the previous value at the address, so
// we also mark them RightWrite.
x86.AFMOVDP & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.RightAddr},
x86.AFMOVFP & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.RightAddr},
x86.AFMOVLP & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.RightAddr},
x86.AFMOVWP & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.RightAddr},
x86.AFMOVVP & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.RightAddr},
x86.AFMULD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFMULDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr},
x86.AFMULF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr},
x86.AIDIVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry},
x86.AIDIVL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry},
x86.AIDIVW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry},
x86.AIMULB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry},
x86.AIMULL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.ImulAXDX | gc.SetCarry},
x86.AIMULW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.ImulAXDX | gc.SetCarry},
x86.AINCB & obj.AMask: {Flags: gc.SizeB | RightRdwr},
x86.AINCL & obj.AMask: {Flags: gc.SizeL | RightRdwr},
x86.AINCW & obj.AMask: {Flags: gc.SizeW | RightRdwr},
x86.AJCC & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJCS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJEQ & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJGE & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJGT & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJHI & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJLE & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJLS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJLT & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJMI & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJNE & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJOC & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJOS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJPC & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJPL & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
x86.AJPS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry},
obj.AJMP: {Flags: gc.Jump | gc.Break | gc.KillCarry},
x86.ALEAW & obj.AMask: {Flags: gc.LeftAddr | gc.RightWrite},
x86.ALEAL & obj.AMask: {Flags: gc.LeftAddr | gc.RightWrite},
x86.AMOVBLSX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.AMOVBLZX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.AMOVBWSX & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.AMOVBWZX & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.AMOVWLSX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.AMOVWLZX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv},
x86.AMOVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move},
x86.AMOVL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move},
x86.AMOVW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move},
x86.AMOVSB & obj.AMask: {Flags: gc.OK},
x86.AMOVSL & obj.AMask: {Flags: gc.OK},
x86.AMOVSW & obj.AMask: {Flags: gc.OK},
obj.ADUFFCOPY: {Flags: gc.OK},
x86.AMOVSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move},
x86.AMOVSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Move},
// We use MOVAPD as a faster synonym for MOVSD.
x86.AMOVAPD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move},
x86.AMULB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry},
x86.AMULL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry},
x86.AMULW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry},
x86.AMULSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr},
x86.AMULSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr},
x86.ANEGB & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.SetCarry},
x86.ANEGL & obj.AMask: {Flags: gc.SizeL | RightRdwr | gc.SetCarry},
x86.ANEGW & obj.AMask: {Flags: gc.SizeW | RightRdwr | gc.SetCarry},
x86.ANOTB & obj.AMask: {Flags: gc.SizeB | RightRdwr},
x86.ANOTL & obj.AMask: {Flags: gc.SizeL | RightRdwr},
x86.ANOTW & obj.AMask: {Flags: gc.SizeW | RightRdwr},
x86.AORB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AORL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AORW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.APOPL & obj.AMask: {Flags: gc.SizeL | gc.RightWrite},
x86.APUSHL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead},
x86.APXOR & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr},
x86.ARCLB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry},
x86.ARCLL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry},
x86.ARCLW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry},
x86.ARCRB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry},
x86.ARCRL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry},
x86.ARCRW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry},
x86.AREP & obj.AMask: {Flags: gc.OK},
x86.AREPN & obj.AMask: {Flags: gc.OK},
obj.ARET: {Flags: gc.Break | gc.KillCarry},
x86.AROLB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.AROLL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.AROLW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ARORB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ARORL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ARORW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASAHF & obj.AMask: {Flags: gc.OK},
x86.ASALB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASALL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASALW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASARB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASARL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASARW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASBBB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry},
x86.ASBBL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry},
x86.ASBBW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry},
x86.ASETCC & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETCS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETEQ & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETGE & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETGT & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETHI & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETLE & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETLS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETLT & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETMI & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETNE & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETOC & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETOS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETPC & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETPL & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASETPS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry},
x86.ASHLB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASHLL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASHLW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASHRB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASHRL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASHRW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry},
x86.ASTOSB & obj.AMask: {Flags: gc.OK},
x86.ASTOSL & obj.AMask: {Flags: gc.OK},
x86.ASTOSW & obj.AMask: {Flags: gc.OK},
obj.ADUFFZERO: {Flags: gc.OK},
x86.ASUBB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.ASUBL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.ASUBW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.ASUBSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr},
x86.ASUBSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr},
x86.ATESTB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ATESTL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.ATESTW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry},
x86.AUCOMISD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead},
x86.AUCOMISS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightRead},
x86.AXCHGB & obj.AMask: {Flags: gc.SizeB | LeftRdwr | RightRdwr},
x86.AXCHGL & obj.AMask: {Flags: gc.SizeL | LeftRdwr | RightRdwr},
x86.AXCHGW & obj.AMask: {Flags: gc.SizeW | LeftRdwr | RightRdwr},
x86.AXORB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AXORL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry},
x86.AXORW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry},
}
func proginfo(p *obj.Prog) gc.ProgInfo {
info := progtable[p.As&obj.AMask]
if info.Flags == 0 {
gc.Fatalf("unknown instruction %v", p)
}
if info.Flags&gc.ImulAXDX != 0 && p.To.Type != obj.TYPE_NONE {
info.Flags |= RightRdwr
}
return info
}