github.com/FenixAra/go@v0.0.0-20170127160404-96ea0918e670/src/cmd/compile/internal/arm64/prog.go (about) 1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package arm64 6 7 import ( 8 "cmd/compile/internal/gc" 9 "cmd/internal/obj" 10 "cmd/internal/obj/arm64" 11 ) 12 13 const ( 14 LeftRdwr uint32 = gc.LeftRead | gc.LeftWrite 15 RightRdwr uint32 = gc.RightRead | gc.RightWrite 16 ) 17 18 // This table gives the basic information about instruction 19 // generated by the compiler and processed in the optimizer. 20 // See opt.h for bit definitions. 21 // 22 // Instructions not generated need not be listed. 23 // As an exception to that rule, we typically write down all the 24 // size variants of an operation even if we just use a subset. 25 // 26 // The table is formatted for 8-space tabs. 27 var progtable = [arm64.ALAST & obj.AMask]gc.ProgInfo{ 28 obj.ATYPE: {Flags: gc.Pseudo | gc.Skip}, 29 obj.ATEXT: {Flags: gc.Pseudo}, 30 obj.AFUNCDATA: {Flags: gc.Pseudo}, 31 obj.APCDATA: {Flags: gc.Pseudo}, 32 obj.AUNDEF: {Flags: gc.Break}, 33 obj.AUSEFIELD: {Flags: gc.OK}, 34 obj.AVARDEF: {Flags: gc.Pseudo | gc.RightWrite}, 35 obj.AVARKILL: {Flags: gc.Pseudo | gc.RightWrite}, 36 obj.AVARLIVE: {Flags: gc.Pseudo | gc.LeftRead}, 37 38 // NOP is an internal no-op that also stands 39 // for USED and SET annotations, not the Power opcode. 40 obj.ANOP: {Flags: gc.LeftRead | gc.RightWrite}, 41 arm64.AHINT & obj.AMask: {Flags: gc.OK}, 42 43 // Integer 44 arm64.AADD & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 45 arm64.ASUB & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 46 arm64.ANEG & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, // why RegRead? revisit once the old backend gone 47 arm64.AAND & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 48 arm64.AORR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 49 arm64.AEOR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 50 arm64.ABIC & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 51 arm64.AMVN & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite}, 52 arm64.AMUL & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 53 arm64.AMULW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite}, 54 arm64.ASMULL & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 55 arm64.AUMULL & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 56 arm64.ASMULH & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 57 arm64.AUMULH & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 58 arm64.ASDIV & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 59 arm64.AUDIV & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 60 arm64.ASDIVW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite}, 61 arm64.AUDIVW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite}, 62 arm64.AREM & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 63 arm64.AUREM & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 64 arm64.AREMW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite}, 65 arm64.AUREMW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite}, 66 arm64.ALSL & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 67 arm64.ALSR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 68 arm64.AASR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 69 arm64.ACMP & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead}, 70 arm64.ACMPW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead}, 71 arm64.AADC & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite | gc.UseCarry}, 72 arm64.AROR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite}, 73 arm64.ARORW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite}, 74 arm64.AADDS & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite | gc.SetCarry}, 75 arm64.ACSET & obj.AMask: {Flags: gc.SizeQ | gc.RightWrite}, 76 arm64.ACSEL & obj.AMask: {Flags: gc.SizeQ | gc.RegRead | gc.RightWrite}, 77 arm64.AREV & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite}, 78 arm64.AREVW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite}, 79 arm64.AREV16W & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite}, 80 arm64.ARBIT & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite}, 81 arm64.ARBITW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite}, 82 arm64.ACLZ & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite}, 83 arm64.ACLZW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite}, 84 85 // Floating point. 86 arm64.AFADDD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite}, 87 arm64.AFADDS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite}, 88 arm64.AFSUBD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite}, 89 arm64.AFSUBS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite}, 90 arm64.AFNEGD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite}, 91 arm64.AFNEGS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite}, 92 arm64.AFSQRTD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite}, 93 arm64.AFMULD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite}, 94 arm64.AFMULS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite}, 95 arm64.AFDIVD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite}, 96 arm64.AFDIVS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite}, 97 arm64.AFCMPD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RegRead}, 98 arm64.AFCMPS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RegRead}, 99 100 // float -> integer 101 arm64.AFCVTZSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 102 arm64.AFCVTZSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, 103 arm64.AFCVTZSDW & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 104 arm64.AFCVTZSSW & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, 105 arm64.AFCVTZUD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 106 arm64.AFCVTZUS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, 107 arm64.AFCVTZUDW & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 108 arm64.AFCVTZUSW & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, 109 110 // float -> float 111 arm64.AFCVTSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 112 arm64.AFCVTDS & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 113 114 // integer -> float 115 arm64.ASCVTFD & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, 116 arm64.ASCVTFS & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, 117 arm64.ASCVTFWD & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 118 arm64.ASCVTFWS & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 119 arm64.AUCVTFD & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, 120 arm64.AUCVTFS & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, 121 arm64.AUCVTFWD & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 122 arm64.AUCVTFWS & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 123 124 // Moves 125 arm64.AMOVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 126 arm64.AMOVBU & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 127 arm64.AMOVH & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 128 arm64.AMOVHU & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 129 arm64.AMOVW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 130 arm64.AMOVWU & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 131 arm64.AMOVD & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move}, 132 arm64.AFMOVS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv}, 133 arm64.AFMOVD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move}, 134 arm64.ALDARW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move}, 135 arm64.ALDAR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move}, 136 arm64.ALDAXRB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move}, 137 arm64.ALDAXRW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move}, 138 arm64.ALDAXR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move}, 139 arm64.ASTLRW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move}, 140 arm64.ASTLR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move}, 141 arm64.ASTLXRB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move}, 142 arm64.ASTLXRW & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move}, 143 arm64.ASTLXR & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move}, 144 145 // Jumps 146 arm64.AB & obj.AMask: {Flags: gc.Jump | gc.Break}, 147 arm64.ABL & obj.AMask: {Flags: gc.Call}, 148 arm64.ABEQ & obj.AMask: {Flags: gc.Cjmp}, 149 arm64.ABNE & obj.AMask: {Flags: gc.Cjmp}, 150 arm64.ABGE & obj.AMask: {Flags: gc.Cjmp}, 151 arm64.ABLT & obj.AMask: {Flags: gc.Cjmp}, 152 arm64.ABGT & obj.AMask: {Flags: gc.Cjmp}, 153 arm64.ABLE & obj.AMask: {Flags: gc.Cjmp}, 154 arm64.ABLO & obj.AMask: {Flags: gc.Cjmp}, 155 arm64.ABLS & obj.AMask: {Flags: gc.Cjmp}, 156 arm64.ABHI & obj.AMask: {Flags: gc.Cjmp}, 157 arm64.ABHS & obj.AMask: {Flags: gc.Cjmp}, 158 arm64.ACBZ & obj.AMask: {Flags: gc.Cjmp}, 159 arm64.ACBNZ & obj.AMask: {Flags: gc.Cjmp}, 160 arm64.ACBZW & obj.AMask: {Flags: gc.Cjmp}, 161 arm64.ACBNZW & obj.AMask: {Flags: gc.Cjmp}, 162 obj.ARET: {Flags: gc.Break}, 163 obj.ADUFFZERO: {Flags: gc.Call}, 164 obj.ADUFFCOPY: {Flags: gc.Call}, 165 } 166 167 func proginfo(p *obj.Prog) gc.ProgInfo { 168 info := progtable[p.As&obj.AMask] 169 if info.Flags == 0 { 170 gc.Fatalf("proginfo: unknown instruction %v", p) 171 } 172 173 if (info.Flags&gc.RegRead != 0) && p.Reg == 0 { 174 info.Flags &^= gc.RegRead 175 info.Flags |= gc.RightRead /*CanRegRead |*/ 176 } 177 178 if p.From.Type == obj.TYPE_ADDR && p.From.Sym != nil && (info.Flags&gc.LeftRead != 0) { 179 info.Flags &^= gc.LeftRead 180 info.Flags |= gc.LeftAddr 181 } 182 183 return info 184 }