github.com/zxy12/go_duplicate_112_new@v0.0.0-20200807091221-747231827200/src/cmd/compile/internal/ssa/gen/ARM.rules (about) 1 // Copyright 2016 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 (Add(Ptr|32|16|8) x y) -> (ADD x y) 6 (Add(32|64)F x y) -> (ADD(F|D) x y) 7 (Add32carry x y) -> (ADDS x y) 8 (Add32withcarry x y c) -> (ADC x y c) 9 10 (Sub(Ptr|32|16|8) x y) -> (SUB x y) 11 (Sub(32|64)F x y) -> (SUB(F|D) x y) 12 (Sub32carry x y) -> (SUBS x y) 13 (Sub32withcarry x y c) -> (SBC x y c) 14 15 (Mul(32|16|8) x y) -> (MUL x y) 16 (Mul(32|64)F x y) -> (MUL(F|D) x y) 17 (Hmul(32|32u) x y) -> (HMU(L|LU) x y) 18 (Mul32uhilo x y) -> (MULLU x y) 19 20 (Div32 x y) -> 21 (SUB (XOR <typ.UInt32> // negate the result if one operand is negative 22 (Select0 <typ.UInt32> (CALLudiv 23 (SUB <typ.UInt32> (XOR x <typ.UInt32> (Signmask x)) (Signmask x)) // negate x if negative 24 (SUB <typ.UInt32> (XOR y <typ.UInt32> (Signmask y)) (Signmask y)))) // negate y if negative 25 (Signmask (XOR <typ.UInt32> x y))) (Signmask (XOR <typ.UInt32> x y))) 26 (Div32u x y) -> (Select0 <typ.UInt32> (CALLudiv x y)) 27 (Div16 x y) -> (Div32 (SignExt16to32 x) (SignExt16to32 y)) 28 (Div16u x y) -> (Div32u (ZeroExt16to32 x) (ZeroExt16to32 y)) 29 (Div8 x y) -> (Div32 (SignExt8to32 x) (SignExt8to32 y)) 30 (Div8u x y) -> (Div32u (ZeroExt8to32 x) (ZeroExt8to32 y)) 31 (Div(32|64)F x y) -> (DIV(F|D) x y) 32 33 (Mod32 x y) -> 34 (SUB (XOR <typ.UInt32> // negate the result if x is negative 35 (Select1 <typ.UInt32> (CALLudiv 36 (SUB <typ.UInt32> (XOR <typ.UInt32> x (Signmask x)) (Signmask x)) // negate x if negative 37 (SUB <typ.UInt32> (XOR <typ.UInt32> y (Signmask y)) (Signmask y)))) // negate y if negative 38 (Signmask x)) (Signmask x)) 39 (Mod32u x y) -> (Select1 <typ.UInt32> (CALLudiv x y)) 40 (Mod16 x y) -> (Mod32 (SignExt16to32 x) (SignExt16to32 y)) 41 (Mod16u x y) -> (Mod32u (ZeroExt16to32 x) (ZeroExt16to32 y)) 42 (Mod8 x y) -> (Mod32 (SignExt8to32 x) (SignExt8to32 y)) 43 (Mod8u x y) -> (Mod32u (ZeroExt8to32 x) (ZeroExt8to32 y)) 44 45 // (x + y) / 2 with x>=y -> (x - y) / 2 + y 46 (Avg32u <t> x y) -> (ADD (SRLconst <t> (SUB <t> x y) [1]) y) 47 48 (And(32|16|8) x y) -> (AND x y) 49 (Or(32|16|8) x y) -> (OR x y) 50 (Xor(32|16|8) x y) -> (XOR x y) 51 52 // unary ops 53 (Neg(32|16|8) x) -> (RSBconst [0] x) 54 (Neg(32|64)F x) -> (NEG(F|D) x) 55 56 (Com(32|16|8) x) -> (MVN x) 57 58 (Sqrt x) -> (SQRTD x) 59 60 // TODO: optimize this for ARMv5 and ARMv6 61 (Ctz32NonZero x) -> (Ctz32 x) 62 63 // count trailing zero for ARMv5 and ARMv6 64 // 32 - CLZ(x&-x - 1) 65 (Ctz32 <t> x) && objabi.GOARM<=6 -> (RSBconst [32] (CLZ <t> (SUBconst <t> (AND <t> x (RSBconst <t> [0] x)) [1]))) 66 67 // count trailing zero for ARMv7 68 (Ctz32 <t> x) && objabi.GOARM==7 -> (CLZ <t> (RBIT <t> x)) 69 70 // bit length 71 (BitLen32 <t> x) -> (RSBconst [32] (CLZ <t> x)) 72 73 // byte swap for ARMv5 74 // let (a, b, c, d) be the bytes of x from high to low 75 // t1 = x right rotate 16 bits -- (c, d, a, b ) 76 // t2 = x ^ t1 -- (a^c, b^d, a^c, b^d) 77 // t3 = t2 &^ 0xff0000 -- (a^c, 0, a^c, b^d) 78 // t4 = t3 >> 8 -- (0, a^c, 0, a^c) 79 // t5 = x right rotate 8 bits -- (d, a, b, c ) 80 // result = t4 ^ t5 -- (d, c, b, a ) 81 // using shifted ops this can be done in 4 instructions. 82 (Bswap32 <t> x) && objabi.GOARM==5 -> 83 (XOR <t> 84 (SRLconst <t> (BICconst <t> (XOR <t> x (SRRconst <t> [16] x)) [0xff0000]) [8]) 85 (SRRconst <t> x [8])) 86 87 // byte swap for ARMv6 and above 88 (Bswap32 x) && objabi.GOARM>=6 -> (REV x) 89 90 // boolean ops -- booleans are represented with 0=false, 1=true 91 (AndB x y) -> (AND x y) 92 (OrB x y) -> (OR x y) 93 (EqB x y) -> (XORconst [1] (XOR <typ.Bool> x y)) 94 (NeqB x y) -> (XOR x y) 95 (Not x) -> (XORconst [1] x) 96 97 // shifts 98 // hardware instruction uses only the low byte of the shift 99 // we compare to 256 to ensure Go semantics for large shifts 100 (Lsh32x32 x y) -> (CMOVWHSconst (SLL <x.Type> x y) (CMPconst [256] y) [0]) 101 (Lsh32x16 x y) -> (CMOVWHSconst (SLL <x.Type> x (ZeroExt16to32 y)) (CMPconst [256] (ZeroExt16to32 y)) [0]) 102 (Lsh32x8 x y) -> (SLL x (ZeroExt8to32 y)) 103 104 (Lsh16x32 x y) -> (CMOVWHSconst (SLL <x.Type> x y) (CMPconst [256] y) [0]) 105 (Lsh16x16 x y) -> (CMOVWHSconst (SLL <x.Type> x (ZeroExt16to32 y)) (CMPconst [256] (ZeroExt16to32 y)) [0]) 106 (Lsh16x8 x y) -> (SLL x (ZeroExt8to32 y)) 107 108 (Lsh8x32 x y) -> (CMOVWHSconst (SLL <x.Type> x y) (CMPconst [256] y) [0]) 109 (Lsh8x16 x y) -> (CMOVWHSconst (SLL <x.Type> x (ZeroExt16to32 y)) (CMPconst [256] (ZeroExt16to32 y)) [0]) 110 (Lsh8x8 x y) -> (SLL x (ZeroExt8to32 y)) 111 112 (Rsh32Ux32 x y) -> (CMOVWHSconst (SRL <x.Type> x y) (CMPconst [256] y) [0]) 113 (Rsh32Ux16 x y) -> (CMOVWHSconst (SRL <x.Type> x (ZeroExt16to32 y)) (CMPconst [256] (ZeroExt16to32 y)) [0]) 114 (Rsh32Ux8 x y) -> (SRL x (ZeroExt8to32 y)) 115 116 (Rsh16Ux32 x y) -> (CMOVWHSconst (SRL <x.Type> (ZeroExt16to32 x) y) (CMPconst [256] y) [0]) 117 (Rsh16Ux16 x y) -> (CMOVWHSconst (SRL <x.Type> (ZeroExt16to32 x) (ZeroExt16to32 y)) (CMPconst [256] (ZeroExt16to32 y)) [0]) 118 (Rsh16Ux8 x y) -> (SRL (ZeroExt16to32 x) (ZeroExt8to32 y)) 119 120 (Rsh8Ux32 x y) -> (CMOVWHSconst (SRL <x.Type> (ZeroExt8to32 x) y) (CMPconst [256] y) [0]) 121 (Rsh8Ux16 x y) -> (CMOVWHSconst (SRL <x.Type> (ZeroExt8to32 x) (ZeroExt16to32 y)) (CMPconst [256] (ZeroExt16to32 y)) [0]) 122 (Rsh8Ux8 x y) -> (SRL (ZeroExt8to32 x) (ZeroExt8to32 y)) 123 124 (Rsh32x32 x y) -> (SRAcond x y (CMPconst [256] y)) 125 (Rsh32x16 x y) -> (SRAcond x (ZeroExt16to32 y) (CMPconst [256] (ZeroExt16to32 y))) 126 (Rsh32x8 x y) -> (SRA x (ZeroExt8to32 y)) 127 128 (Rsh16x32 x y) -> (SRAcond (SignExt16to32 x) y (CMPconst [256] y)) 129 (Rsh16x16 x y) -> (SRAcond (SignExt16to32 x) (ZeroExt16to32 y) (CMPconst [256] (ZeroExt16to32 y))) 130 (Rsh16x8 x y) -> (SRA (SignExt16to32 x) (ZeroExt8to32 y)) 131 132 (Rsh8x32 x y) -> (SRAcond (SignExt8to32 x) y (CMPconst [256] y)) 133 (Rsh8x16 x y) -> (SRAcond (SignExt8to32 x) (ZeroExt16to32 y) (CMPconst [256] (ZeroExt16to32 y))) 134 (Rsh8x8 x y) -> (SRA (SignExt8to32 x) (ZeroExt8to32 y)) 135 136 // constant shifts 137 // generic opt rewrites all constant shifts to shift by Const64 138 (Lsh32x64 x (Const64 [c])) && uint64(c) < 32 -> (SLLconst x [c]) 139 (Rsh32x64 x (Const64 [c])) && uint64(c) < 32 -> (SRAconst x [c]) 140 (Rsh32Ux64 x (Const64 [c])) && uint64(c) < 32 -> (SRLconst x [c]) 141 (Lsh16x64 x (Const64 [c])) && uint64(c) < 16 -> (SLLconst x [c]) 142 (Rsh16x64 x (Const64 [c])) && uint64(c) < 16 -> (SRAconst (SLLconst <typ.UInt32> x [16]) [c+16]) 143 (Rsh16Ux64 x (Const64 [c])) && uint64(c) < 16 -> (SRLconst (SLLconst <typ.UInt32> x [16]) [c+16]) 144 (Lsh8x64 x (Const64 [c])) && uint64(c) < 8 -> (SLLconst x [c]) 145 (Rsh8x64 x (Const64 [c])) && uint64(c) < 8 -> (SRAconst (SLLconst <typ.UInt32> x [24]) [c+24]) 146 (Rsh8Ux64 x (Const64 [c])) && uint64(c) < 8 -> (SRLconst (SLLconst <typ.UInt32> x [24]) [c+24]) 147 148 // large constant shifts 149 (Lsh32x64 _ (Const64 [c])) && uint64(c) >= 32 -> (Const32 [0]) 150 (Rsh32Ux64 _ (Const64 [c])) && uint64(c) >= 32 -> (Const32 [0]) 151 (Lsh16x64 _ (Const64 [c])) && uint64(c) >= 16 -> (Const16 [0]) 152 (Rsh16Ux64 _ (Const64 [c])) && uint64(c) >= 16 -> (Const16 [0]) 153 (Lsh8x64 _ (Const64 [c])) && uint64(c) >= 8 -> (Const8 [0]) 154 (Rsh8Ux64 _ (Const64 [c])) && uint64(c) >= 8 -> (Const8 [0]) 155 156 // large constant signed right shift, we leave the sign bit 157 (Rsh32x64 x (Const64 [c])) && uint64(c) >= 32 -> (SRAconst x [31]) 158 (Rsh16x64 x (Const64 [c])) && uint64(c) >= 16 -> (SRAconst (SLLconst <typ.UInt32> x [16]) [31]) 159 (Rsh8x64 x (Const64 [c])) && uint64(c) >= 8 -> (SRAconst (SLLconst <typ.UInt32> x [24]) [31]) 160 161 // constants 162 (Const8 [val]) -> (MOVWconst [val]) 163 (Const16 [val]) -> (MOVWconst [val]) 164 (Const32 [val]) -> (MOVWconst [val]) 165 (Const32F [val]) -> (MOVFconst [val]) 166 (Const64F [val]) -> (MOVDconst [val]) 167 (ConstNil) -> (MOVWconst [0]) 168 (ConstBool [b]) -> (MOVWconst [b]) 169 170 // truncations 171 // Because we ignore high parts of registers, truncates are just copies. 172 (Trunc16to8 x) -> x 173 (Trunc32to8 x) -> x 174 (Trunc32to16 x) -> x 175 176 // Zero-/Sign-extensions 177 (ZeroExt8to16 x) -> (MOVBUreg x) 178 (ZeroExt8to32 x) -> (MOVBUreg x) 179 (ZeroExt16to32 x) -> (MOVHUreg x) 180 181 (SignExt8to16 x) -> (MOVBreg x) 182 (SignExt8to32 x) -> (MOVBreg x) 183 (SignExt16to32 x) -> (MOVHreg x) 184 185 (Signmask x) -> (SRAconst x [31]) 186 (Zeromask x) -> (SRAconst (RSBshiftRL <typ.Int32> x x [1]) [31]) // sign bit of uint32(x)>>1 - x 187 (Slicemask <t> x) -> (SRAconst (RSBconst <t> [0] x) [31]) 188 189 // float <-> int conversion 190 (Cvt32to32F x) -> (MOVWF x) 191 (Cvt32to64F x) -> (MOVWD x) 192 (Cvt32Uto32F x) -> (MOVWUF x) 193 (Cvt32Uto64F x) -> (MOVWUD x) 194 (Cvt32Fto32 x) -> (MOVFW x) 195 (Cvt64Fto32 x) -> (MOVDW x) 196 (Cvt32Fto32U x) -> (MOVFWU x) 197 (Cvt64Fto32U x) -> (MOVDWU x) 198 (Cvt32Fto64F x) -> (MOVFD x) 199 (Cvt64Fto32F x) -> (MOVDF x) 200 201 (Round(32|64)F x) -> x 202 203 // comparisons 204 (Eq8 x y) -> (Equal (CMP (ZeroExt8to32 x) (ZeroExt8to32 y))) 205 (Eq16 x y) -> (Equal (CMP (ZeroExt16to32 x) (ZeroExt16to32 y))) 206 (Eq32 x y) -> (Equal (CMP x y)) 207 (EqPtr x y) -> (Equal (CMP x y)) 208 (Eq(32|64)F x y) -> (Equal (CMP(F|D) x y)) 209 210 (Neq8 x y) -> (NotEqual (CMP (ZeroExt8to32 x) (ZeroExt8to32 y))) 211 (Neq16 x y) -> (NotEqual (CMP (ZeroExt16to32 x) (ZeroExt16to32 y))) 212 (Neq32 x y) -> (NotEqual (CMP x y)) 213 (NeqPtr x y) -> (NotEqual (CMP x y)) 214 (Neq(32|64)F x y) -> (NotEqual (CMP(F|D) x y)) 215 216 (Less8 x y) -> (LessThan (CMP (SignExt8to32 x) (SignExt8to32 y))) 217 (Less16 x y) -> (LessThan (CMP (SignExt16to32 x) (SignExt16to32 y))) 218 (Less32 x y) -> (LessThan (CMP x y)) 219 (Less(32|64)F x y) -> (GreaterThan (CMP(F|D) y x)) // reverse operands to work around NaN 220 221 (Less8U x y) -> (LessThanU (CMP (ZeroExt8to32 x) (ZeroExt8to32 y))) 222 (Less16U x y) -> (LessThanU (CMP (ZeroExt16to32 x) (ZeroExt16to32 y))) 223 (Less32U x y) -> (LessThanU (CMP x y)) 224 225 (Leq8 x y) -> (LessEqual (CMP (SignExt8to32 x) (SignExt8to32 y))) 226 (Leq16 x y) -> (LessEqual (CMP (SignExt16to32 x) (SignExt16to32 y))) 227 (Leq32 x y) -> (LessEqual (CMP x y)) 228 (Leq(32|64)F x y) -> (GreaterEqual (CMP(F|D) y x)) // reverse operands to work around NaN 229 230 (Leq8U x y) -> (LessEqualU (CMP (ZeroExt8to32 x) (ZeroExt8to32 y))) 231 (Leq16U x y) -> (LessEqualU (CMP (ZeroExt16to32 x) (ZeroExt16to32 y))) 232 (Leq32U x y) -> (LessEqualU (CMP x y)) 233 234 (Greater8 x y) -> (GreaterThan (CMP (SignExt8to32 x) (SignExt8to32 y))) 235 (Greater16 x y) -> (GreaterThan (CMP (SignExt16to32 x) (SignExt16to32 y))) 236 (Greater32 x y) -> (GreaterThan (CMP x y)) 237 (Greater(32|64)F x y) -> (GreaterThan (CMP(F|D) x y)) 238 239 (Greater8U x y) -> (GreaterThanU (CMP (ZeroExt8to32 x) (ZeroExt8to32 y))) 240 (Greater16U x y) -> (GreaterThanU (CMP (ZeroExt16to32 x) (ZeroExt16to32 y))) 241 (Greater32U x y) -> (GreaterThanU (CMP x y)) 242 243 (Geq8 x y) -> (GreaterEqual (CMP (SignExt8to32 x) (SignExt8to32 y))) 244 (Geq16 x y) -> (GreaterEqual (CMP (SignExt16to32 x) (SignExt16to32 y))) 245 (Geq32 x y) -> (GreaterEqual (CMP x y)) 246 (Geq(32|64)F x y) -> (GreaterEqual (CMP(F|D) x y)) 247 248 (Geq8U x y) -> (GreaterEqualU (CMP (ZeroExt8to32 x) (ZeroExt8to32 y))) 249 (Geq16U x y) -> (GreaterEqualU (CMP (ZeroExt16to32 x) (ZeroExt16to32 y))) 250 (Geq32U x y) -> (GreaterEqualU (CMP x y)) 251 252 (OffPtr [off] ptr:(SP)) -> (MOVWaddr [off] ptr) 253 (OffPtr [off] ptr) -> (ADDconst [off] ptr) 254 255 (Addr {sym} base) -> (MOVWaddr {sym} base) 256 (LocalAddr {sym} base _) -> (MOVWaddr {sym} base) 257 258 // loads 259 (Load <t> ptr mem) && t.IsBoolean() -> (MOVBUload ptr mem) 260 (Load <t> ptr mem) && (is8BitInt(t) && isSigned(t)) -> (MOVBload ptr mem) 261 (Load <t> ptr mem) && (is8BitInt(t) && !isSigned(t)) -> (MOVBUload ptr mem) 262 (Load <t> ptr mem) && (is16BitInt(t) && isSigned(t)) -> (MOVHload ptr mem) 263 (Load <t> ptr mem) && (is16BitInt(t) && !isSigned(t)) -> (MOVHUload ptr mem) 264 (Load <t> ptr mem) && (is32BitInt(t) || isPtr(t)) -> (MOVWload ptr mem) 265 (Load <t> ptr mem) && is32BitFloat(t) -> (MOVFload ptr mem) 266 (Load <t> ptr mem) && is64BitFloat(t) -> (MOVDload ptr mem) 267 268 // stores 269 (Store {t} ptr val mem) && t.(*types.Type).Size() == 1 -> (MOVBstore ptr val mem) 270 (Store {t} ptr val mem) && t.(*types.Type).Size() == 2 -> (MOVHstore ptr val mem) 271 (Store {t} ptr val mem) && t.(*types.Type).Size() == 4 && !is32BitFloat(val.Type) -> (MOVWstore ptr val mem) 272 (Store {t} ptr val mem) && t.(*types.Type).Size() == 4 && is32BitFloat(val.Type) -> (MOVFstore ptr val mem) 273 (Store {t} ptr val mem) && t.(*types.Type).Size() == 8 && is64BitFloat(val.Type) -> (MOVDstore ptr val mem) 274 275 // zero instructions 276 (Zero [0] _ mem) -> mem 277 (Zero [1] ptr mem) -> (MOVBstore ptr (MOVWconst [0]) mem) 278 (Zero [2] {t} ptr mem) && t.(*types.Type).Alignment()%2 == 0 -> 279 (MOVHstore ptr (MOVWconst [0]) mem) 280 (Zero [2] ptr mem) -> 281 (MOVBstore [1] ptr (MOVWconst [0]) 282 (MOVBstore [0] ptr (MOVWconst [0]) mem)) 283 (Zero [4] {t} ptr mem) && t.(*types.Type).Alignment()%4 == 0 -> 284 (MOVWstore ptr (MOVWconst [0]) mem) 285 (Zero [4] {t} ptr mem) && t.(*types.Type).Alignment()%2 == 0 -> 286 (MOVHstore [2] ptr (MOVWconst [0]) 287 (MOVHstore [0] ptr (MOVWconst [0]) mem)) 288 (Zero [4] ptr mem) -> 289 (MOVBstore [3] ptr (MOVWconst [0]) 290 (MOVBstore [2] ptr (MOVWconst [0]) 291 (MOVBstore [1] ptr (MOVWconst [0]) 292 (MOVBstore [0] ptr (MOVWconst [0]) mem)))) 293 294 (Zero [3] ptr mem) -> 295 (MOVBstore [2] ptr (MOVWconst [0]) 296 (MOVBstore [1] ptr (MOVWconst [0]) 297 (MOVBstore [0] ptr (MOVWconst [0]) mem))) 298 299 // Medium zeroing uses a duff device 300 // 4 and 128 are magic constants, see runtime/mkduff.go 301 (Zero [s] {t} ptr mem) 302 && s%4 == 0 && s > 4 && s <= 512 303 && t.(*types.Type).Alignment()%4 == 0 && !config.noDuffDevice -> 304 (DUFFZERO [4 * (128 - s/4)] ptr (MOVWconst [0]) mem) 305 306 // Large zeroing uses a loop 307 (Zero [s] {t} ptr mem) 308 && (s > 512 || config.noDuffDevice) || t.(*types.Type).Alignment()%4 != 0 -> 309 (LoweredZero [t.(*types.Type).Alignment()] 310 ptr 311 (ADDconst <ptr.Type> ptr [s-moveSize(t.(*types.Type).Alignment(), config)]) 312 (MOVWconst [0]) 313 mem) 314 315 // moves 316 (Move [0] _ _ mem) -> mem 317 (Move [1] dst src mem) -> (MOVBstore dst (MOVBUload src mem) mem) 318 (Move [2] {t} dst src mem) && t.(*types.Type).Alignment()%2 == 0 -> 319 (MOVHstore dst (MOVHUload src mem) mem) 320 (Move [2] dst src mem) -> 321 (MOVBstore [1] dst (MOVBUload [1] src mem) 322 (MOVBstore dst (MOVBUload src mem) mem)) 323 (Move [4] {t} dst src mem) && t.(*types.Type).Alignment()%4 == 0 -> 324 (MOVWstore dst (MOVWload src mem) mem) 325 (Move [4] {t} dst src mem) && t.(*types.Type).Alignment()%2 == 0 -> 326 (MOVHstore [2] dst (MOVHUload [2] src mem) 327 (MOVHstore dst (MOVHUload src mem) mem)) 328 (Move [4] dst src mem) -> 329 (MOVBstore [3] dst (MOVBUload [3] src mem) 330 (MOVBstore [2] dst (MOVBUload [2] src mem) 331 (MOVBstore [1] dst (MOVBUload [1] src mem) 332 (MOVBstore dst (MOVBUload src mem) mem)))) 333 334 (Move [3] dst src mem) -> 335 (MOVBstore [2] dst (MOVBUload [2] src mem) 336 (MOVBstore [1] dst (MOVBUload [1] src mem) 337 (MOVBstore dst (MOVBUload src mem) mem))) 338 339 // Medium move uses a duff device 340 // 8 and 128 are magic constants, see runtime/mkduff.go 341 (Move [s] {t} dst src mem) 342 && s%4 == 0 && s > 4 && s <= 512 343 && t.(*types.Type).Alignment()%4 == 0 && !config.noDuffDevice -> 344 (DUFFCOPY [8 * (128 - s/4)] dst src mem) 345 346 // Large move uses a loop 347 (Move [s] {t} dst src mem) 348 && (s > 512 || config.noDuffDevice) || t.(*types.Type).Alignment()%4 != 0 -> 349 (LoweredMove [t.(*types.Type).Alignment()] 350 dst 351 src 352 (ADDconst <src.Type> src [s-moveSize(t.(*types.Type).Alignment(), config)]) 353 mem) 354 355 // calls 356 (StaticCall [argwid] {target} mem) -> (CALLstatic [argwid] {target} mem) 357 (ClosureCall [argwid] entry closure mem) -> (CALLclosure [argwid] entry closure mem) 358 (InterCall [argwid] entry mem) -> (CALLinter [argwid] entry mem) 359 360 // checks 361 (NilCheck ptr mem) -> (LoweredNilCheck ptr mem) 362 (IsNonNil ptr) -> (NotEqual (CMPconst [0] ptr)) 363 (IsInBounds idx len) -> (LessThanU (CMP idx len)) 364 (IsSliceInBounds idx len) -> (LessEqualU (CMP idx len)) 365 366 // pseudo-ops 367 (GetClosurePtr) -> (LoweredGetClosurePtr) 368 (GetCallerSP) -> (LoweredGetCallerSP) 369 (GetCallerPC) -> (LoweredGetCallerPC) 370 371 // Absorb pseudo-ops into blocks. 372 (If (Equal cc) yes no) -> (EQ cc yes no) 373 (If (NotEqual cc) yes no) -> (NE cc yes no) 374 (If (LessThan cc) yes no) -> (LT cc yes no) 375 (If (LessThanU cc) yes no) -> (ULT cc yes no) 376 (If (LessEqual cc) yes no) -> (LE cc yes no) 377 (If (LessEqualU cc) yes no) -> (ULE cc yes no) 378 (If (GreaterThan cc) yes no) -> (GT cc yes no) 379 (If (GreaterThanU cc) yes no) -> (UGT cc yes no) 380 (If (GreaterEqual cc) yes no) -> (GE cc yes no) 381 (If (GreaterEqualU cc) yes no) -> (UGE cc yes no) 382 383 (If cond yes no) -> (NE (CMPconst [0] cond) yes no) 384 385 // Absorb boolean tests into block 386 (NE (CMPconst [0] (Equal cc)) yes no) -> (EQ cc yes no) 387 (NE (CMPconst [0] (NotEqual cc)) yes no) -> (NE cc yes no) 388 (NE (CMPconst [0] (LessThan cc)) yes no) -> (LT cc yes no) 389 (NE (CMPconst [0] (LessThanU cc)) yes no) -> (ULT cc yes no) 390 (NE (CMPconst [0] (LessEqual cc)) yes no) -> (LE cc yes no) 391 (NE (CMPconst [0] (LessEqualU cc)) yes no) -> (ULE cc yes no) 392 (NE (CMPconst [0] (GreaterThan cc)) yes no) -> (GT cc yes no) 393 (NE (CMPconst [0] (GreaterThanU cc)) yes no) -> (UGT cc yes no) 394 (NE (CMPconst [0] (GreaterEqual cc)) yes no) -> (GE cc yes no) 395 (NE (CMPconst [0] (GreaterEqualU cc)) yes no) -> (UGE cc yes no) 396 397 // Write barrier. 398 (WB {fn} destptr srcptr mem) -> (LoweredWB {fn} destptr srcptr mem) 399 400 // Optimizations 401 402 // fold offset into address 403 (ADDconst [off1] (MOVWaddr [off2] {sym} ptr)) -> (MOVWaddr [off1+off2] {sym} ptr) 404 (SUBconst [off1] (MOVWaddr [off2] {sym} ptr)) -> (MOVWaddr [off2-off1] {sym} ptr) 405 406 // fold address into load/store 407 (MOVBload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVBload [off1+off2] {sym} ptr mem) 408 (MOVBload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVBload [off1-off2] {sym} ptr mem) 409 (MOVBUload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVBUload [off1+off2] {sym} ptr mem) 410 (MOVBUload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVBUload [off1-off2] {sym} ptr mem) 411 (MOVHload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVHload [off1+off2] {sym} ptr mem) 412 (MOVHload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVHload [off1-off2] {sym} ptr mem) 413 (MOVHUload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVHUload [off1+off2] {sym} ptr mem) 414 (MOVHUload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVHUload [off1-off2] {sym} ptr mem) 415 (MOVWload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVWload [off1+off2] {sym} ptr mem) 416 (MOVWload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVWload [off1-off2] {sym} ptr mem) 417 (MOVFload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVFload [off1+off2] {sym} ptr mem) 418 (MOVFload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVFload [off1-off2] {sym} ptr mem) 419 (MOVDload [off1] {sym} (ADDconst [off2] ptr) mem) -> (MOVDload [off1+off2] {sym} ptr mem) 420 (MOVDload [off1] {sym} (SUBconst [off2] ptr) mem) -> (MOVDload [off1-off2] {sym} ptr mem) 421 422 (MOVBstore [off1] {sym} (ADDconst [off2] ptr) val mem) -> (MOVBstore [off1+off2] {sym} ptr val mem) 423 (MOVBstore [off1] {sym} (SUBconst [off2] ptr) val mem) -> (MOVBstore [off1-off2] {sym} ptr val mem) 424 (MOVHstore [off1] {sym} (ADDconst [off2] ptr) val mem) -> (MOVHstore [off1+off2] {sym} ptr val mem) 425 (MOVHstore [off1] {sym} (SUBconst [off2] ptr) val mem) -> (MOVHstore [off1-off2] {sym} ptr val mem) 426 (MOVWstore [off1] {sym} (ADDconst [off2] ptr) val mem) -> (MOVWstore [off1+off2] {sym} ptr val mem) 427 (MOVWstore [off1] {sym} (SUBconst [off2] ptr) val mem) -> (MOVWstore [off1-off2] {sym} ptr val mem) 428 (MOVFstore [off1] {sym} (ADDconst [off2] ptr) val mem) -> (MOVFstore [off1+off2] {sym} ptr val mem) 429 (MOVFstore [off1] {sym} (SUBconst [off2] ptr) val mem) -> (MOVFstore [off1-off2] {sym} ptr val mem) 430 (MOVDstore [off1] {sym} (ADDconst [off2] ptr) val mem) -> (MOVDstore [off1+off2] {sym} ptr val mem) 431 (MOVDstore [off1] {sym} (SUBconst [off2] ptr) val mem) -> (MOVDstore [off1-off2] {sym} ptr val mem) 432 433 (MOVBload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 434 (MOVBload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 435 (MOVBUload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 436 (MOVBUload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 437 (MOVHload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 438 (MOVHload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 439 (MOVHUload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 440 (MOVHUload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 441 (MOVWload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 442 (MOVWload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 443 (MOVFload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 444 (MOVFload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 445 (MOVDload [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) -> 446 (MOVDload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) 447 448 (MOVBstore [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) -> 449 (MOVBstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) 450 (MOVHstore [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) -> 451 (MOVHstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) 452 (MOVWstore [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) -> 453 (MOVWstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) 454 (MOVFstore [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) -> 455 (MOVFstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) 456 (MOVDstore [off1] {sym1} (MOVWaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) -> 457 (MOVDstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) 458 459 // replace load from same location as preceding store with zero/sign extension (or copy in case of full width) 460 (MOVBload [off] {sym} ptr (MOVBstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> (MOVBreg x) 461 (MOVBUload [off] {sym} ptr (MOVBstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> (MOVBUreg x) 462 (MOVHload [off] {sym} ptr (MOVHstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> (MOVHreg x) 463 (MOVHUload [off] {sym} ptr (MOVHstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> (MOVHUreg x) 464 (MOVWload [off] {sym} ptr (MOVWstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> x 465 466 (MOVFload [off] {sym} ptr (MOVFstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> x 467 (MOVDload [off] {sym} ptr (MOVDstore [off2] {sym2} ptr2 x _)) && sym == sym2 && off == off2 && isSamePtr(ptr, ptr2) -> x 468 469 (MOVWloadidx ptr idx (MOVWstoreidx ptr2 idx x _)) && isSamePtr(ptr, ptr2) -> x 470 (MOVWloadshiftLL ptr idx [c] (MOVWstoreshiftLL ptr2 idx [d] x _)) && c==d && isSamePtr(ptr, ptr2) -> x 471 (MOVWloadshiftRL ptr idx [c] (MOVWstoreshiftRL ptr2 idx [d] x _)) && c==d && isSamePtr(ptr, ptr2) -> x 472 (MOVWloadshiftRA ptr idx [c] (MOVWstoreshiftRA ptr2 idx [d] x _)) && c==d && isSamePtr(ptr, ptr2) -> x 473 (MOVBUloadidx ptr idx (MOVBstoreidx ptr2 idx x _)) && isSamePtr(ptr, ptr2) -> (MOVBUreg x) 474 (MOVBloadidx ptr idx (MOVBstoreidx ptr2 idx x _)) && isSamePtr(ptr, ptr2) -> (MOVBreg x) 475 (MOVHUloadidx ptr idx (MOVHstoreidx ptr2 idx x _)) && isSamePtr(ptr, ptr2) -> (MOVHUreg x) 476 (MOVHloadidx ptr idx (MOVHstoreidx ptr2 idx x _)) && isSamePtr(ptr, ptr2) -> (MOVHreg x) 477 478 // fold constant into arithmatic ops 479 (ADD x (MOVWconst [c])) -> (ADDconst [c] x) 480 (SUB (MOVWconst [c]) x) -> (RSBconst [c] x) 481 (SUB x (MOVWconst [c])) -> (SUBconst [c] x) 482 (RSB (MOVWconst [c]) x) -> (SUBconst [c] x) 483 (RSB x (MOVWconst [c])) -> (RSBconst [c] x) 484 485 (ADDS x (MOVWconst [c])) -> (ADDSconst [c] x) 486 (SUBS x (MOVWconst [c])) -> (SUBSconst [c] x) 487 488 (ADC (MOVWconst [c]) x flags) -> (ADCconst [c] x flags) 489 (ADC x (MOVWconst [c]) flags) -> (ADCconst [c] x flags) 490 (SBC (MOVWconst [c]) x flags) -> (RSCconst [c] x flags) 491 (SBC x (MOVWconst [c]) flags) -> (SBCconst [c] x flags) 492 493 (AND x (MOVWconst [c])) -> (ANDconst [c] x) 494 (OR x (MOVWconst [c])) -> (ORconst [c] x) 495 (XOR x (MOVWconst [c])) -> (XORconst [c] x) 496 (BIC x (MOVWconst [c])) -> (BICconst [c] x) 497 498 (SLL x (MOVWconst [c])) -> (SLLconst x [c&31]) // Note: I don't think we ever generate bad constant shifts (i.e. c>=32) 499 (SRL x (MOVWconst [c])) -> (SRLconst x [c&31]) 500 (SRA x (MOVWconst [c])) -> (SRAconst x [c&31]) 501 502 (CMP x (MOVWconst [c])) -> (CMPconst [c] x) 503 (CMP (MOVWconst [c]) x) -> (InvertFlags (CMPconst [c] x)) 504 (CMN x (MOVWconst [c])) -> (CMNconst [c] x) 505 (TST x (MOVWconst [c])) -> (TSTconst [c] x) 506 (TEQ x (MOVWconst [c])) -> (TEQconst [c] x) 507 508 // don't extend after proper load 509 // MOVWreg instruction is not emitted if src and dst registers are same, but it ensures the type. 510 (MOVBreg x:(MOVBload _ _)) -> (MOVWreg x) 511 (MOVBUreg x:(MOVBUload _ _)) -> (MOVWreg x) 512 (MOVHreg x:(MOVBload _ _)) -> (MOVWreg x) 513 (MOVHreg x:(MOVBUload _ _)) -> (MOVWreg x) 514 (MOVHreg x:(MOVHload _ _)) -> (MOVWreg x) 515 (MOVHUreg x:(MOVBUload _ _)) -> (MOVWreg x) 516 (MOVHUreg x:(MOVHUload _ _)) -> (MOVWreg x) 517 518 // fold extensions and ANDs together 519 (MOVBUreg (ANDconst [c] x)) -> (ANDconst [c&0xff] x) 520 (MOVHUreg (ANDconst [c] x)) -> (ANDconst [c&0xffff] x) 521 (MOVBreg (ANDconst [c] x)) && c & 0x80 == 0 -> (ANDconst [c&0x7f] x) 522 (MOVHreg (ANDconst [c] x)) && c & 0x8000 == 0 -> (ANDconst [c&0x7fff] x) 523 524 // fold double extensions 525 (MOVBreg x:(MOVBreg _)) -> (MOVWreg x) 526 (MOVBUreg x:(MOVBUreg _)) -> (MOVWreg x) 527 (MOVHreg x:(MOVBreg _)) -> (MOVWreg x) 528 (MOVHreg x:(MOVBUreg _)) -> (MOVWreg x) 529 (MOVHreg x:(MOVHreg _)) -> (MOVWreg x) 530 (MOVHUreg x:(MOVBUreg _)) -> (MOVWreg x) 531 (MOVHUreg x:(MOVHUreg _)) -> (MOVWreg x) 532 533 // don't extend before store 534 (MOVBstore [off] {sym} ptr (MOVBreg x) mem) -> (MOVBstore [off] {sym} ptr x mem) 535 (MOVBstore [off] {sym} ptr (MOVBUreg x) mem) -> (MOVBstore [off] {sym} ptr x mem) 536 (MOVBstore [off] {sym} ptr (MOVHreg x) mem) -> (MOVBstore [off] {sym} ptr x mem) 537 (MOVBstore [off] {sym} ptr (MOVHUreg x) mem) -> (MOVBstore [off] {sym} ptr x mem) 538 (MOVHstore [off] {sym} ptr (MOVHreg x) mem) -> (MOVHstore [off] {sym} ptr x mem) 539 (MOVHstore [off] {sym} ptr (MOVHUreg x) mem) -> (MOVHstore [off] {sym} ptr x mem) 540 541 // if a register move has only 1 use, just use the same register without emitting instruction 542 // MOVWnop doesn't emit instruction, only for ensuring the type. 543 (MOVWreg x) && x.Uses == 1 -> (MOVWnop x) 544 545 // mul by constant 546 (MUL x (MOVWconst [c])) && int32(c) == -1 -> (RSBconst [0] x) 547 (MUL _ (MOVWconst [0])) -> (MOVWconst [0]) 548 (MUL x (MOVWconst [1])) -> x 549 (MUL x (MOVWconst [c])) && isPowerOfTwo(c) -> (SLLconst [log2(c)] x) 550 (MUL x (MOVWconst [c])) && isPowerOfTwo(c-1) && int32(c) >= 3 -> (ADDshiftLL x x [log2(c-1)]) 551 (MUL x (MOVWconst [c])) && isPowerOfTwo(c+1) && int32(c) >= 7 -> (RSBshiftLL x x [log2(c+1)]) 552 (MUL x (MOVWconst [c])) && c%3 == 0 && isPowerOfTwo(c/3) && is32Bit(c) -> (SLLconst [log2(c/3)] (ADDshiftLL <x.Type> x x [1])) 553 (MUL x (MOVWconst [c])) && c%5 == 0 && isPowerOfTwo(c/5) && is32Bit(c) -> (SLLconst [log2(c/5)] (ADDshiftLL <x.Type> x x [2])) 554 (MUL x (MOVWconst [c])) && c%7 == 0 && isPowerOfTwo(c/7) && is32Bit(c) -> (SLLconst [log2(c/7)] (RSBshiftLL <x.Type> x x [3])) 555 (MUL x (MOVWconst [c])) && c%9 == 0 && isPowerOfTwo(c/9) && is32Bit(c) -> (SLLconst [log2(c/9)] (ADDshiftLL <x.Type> x x [3])) 556 557 (MULA x (MOVWconst [c]) a) && int32(c) == -1 -> (SUB a x) 558 (MULA _ (MOVWconst [0]) a) -> a 559 (MULA x (MOVWconst [1]) a) -> (ADD x a) 560 (MULA x (MOVWconst [c]) a) && isPowerOfTwo(c) -> (ADD (SLLconst <x.Type> [log2(c)] x) a) 561 (MULA x (MOVWconst [c]) a) && isPowerOfTwo(c-1) && int32(c) >= 3 -> (ADD (ADDshiftLL <x.Type> x x [log2(c-1)]) a) 562 (MULA x (MOVWconst [c]) a) && isPowerOfTwo(c+1) && int32(c) >= 7 -> (ADD (RSBshiftLL <x.Type> x x [log2(c+1)]) a) 563 (MULA x (MOVWconst [c]) a) && c%3 == 0 && isPowerOfTwo(c/3) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/3)] (ADDshiftLL <x.Type> x x [1])) a) 564 (MULA x (MOVWconst [c]) a) && c%5 == 0 && isPowerOfTwo(c/5) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/5)] (ADDshiftLL <x.Type> x x [2])) a) 565 (MULA x (MOVWconst [c]) a) && c%7 == 0 && isPowerOfTwo(c/7) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/7)] (RSBshiftLL <x.Type> x x [3])) a) 566 (MULA x (MOVWconst [c]) a) && c%9 == 0 && isPowerOfTwo(c/9) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/9)] (ADDshiftLL <x.Type> x x [3])) a) 567 568 (MULA (MOVWconst [c]) x a) && int32(c) == -1 -> (SUB a x) 569 (MULA (MOVWconst [0]) _ a) -> a 570 (MULA (MOVWconst [1]) x a) -> (ADD x a) 571 (MULA (MOVWconst [c]) x a) && isPowerOfTwo(c) -> (ADD (SLLconst <x.Type> [log2(c)] x) a) 572 (MULA (MOVWconst [c]) x a) && isPowerOfTwo(c-1) && int32(c) >= 3 -> (ADD (ADDshiftLL <x.Type> x x [log2(c-1)]) a) 573 (MULA (MOVWconst [c]) x a) && isPowerOfTwo(c+1) && int32(c) >= 7 -> (ADD (RSBshiftLL <x.Type> x x [log2(c+1)]) a) 574 (MULA (MOVWconst [c]) x a) && c%3 == 0 && isPowerOfTwo(c/3) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/3)] (ADDshiftLL <x.Type> x x [1])) a) 575 (MULA (MOVWconst [c]) x a) && c%5 == 0 && isPowerOfTwo(c/5) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/5)] (ADDshiftLL <x.Type> x x [2])) a) 576 (MULA (MOVWconst [c]) x a) && c%7 == 0 && isPowerOfTwo(c/7) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/7)] (RSBshiftLL <x.Type> x x [3])) a) 577 (MULA (MOVWconst [c]) x a) && c%9 == 0 && isPowerOfTwo(c/9) && is32Bit(c) -> (ADD (SLLconst <x.Type> [log2(c/9)] (ADDshiftLL <x.Type> x x [3])) a) 578 579 (MULS x (MOVWconst [c]) a) && int32(c) == -1 -> (ADD a x) 580 (MULS _ (MOVWconst [0]) a) -> a 581 (MULS x (MOVWconst [1]) a) -> (RSB x a) 582 (MULS x (MOVWconst [c]) a) && isPowerOfTwo(c) -> (RSB (SLLconst <x.Type> [log2(c)] x) a) 583 (MULS x (MOVWconst [c]) a) && isPowerOfTwo(c-1) && int32(c) >= 3 -> (RSB (ADDshiftLL <x.Type> x x [log2(c-1)]) a) 584 (MULS x (MOVWconst [c]) a) && isPowerOfTwo(c+1) && int32(c) >= 7 -> (RSB (RSBshiftLL <x.Type> x x [log2(c+1)]) a) 585 (MULS x (MOVWconst [c]) a) && c%3 == 0 && isPowerOfTwo(c/3) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/3)] (ADDshiftLL <x.Type> x x [1])) a) 586 (MULS x (MOVWconst [c]) a) && c%5 == 0 && isPowerOfTwo(c/5) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/5)] (ADDshiftLL <x.Type> x x [2])) a) 587 (MULS x (MOVWconst [c]) a) && c%7 == 0 && isPowerOfTwo(c/7) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/7)] (RSBshiftLL <x.Type> x x [3])) a) 588 (MULS x (MOVWconst [c]) a) && c%9 == 0 && isPowerOfTwo(c/9) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/9)] (ADDshiftLL <x.Type> x x [3])) a) 589 590 (MULS (MOVWconst [c]) x a) && int32(c) == -1 -> (ADD a x) 591 (MULS (MOVWconst [0]) _ a) -> a 592 (MULS (MOVWconst [1]) x a) -> (RSB x a) 593 (MULS (MOVWconst [c]) x a) && isPowerOfTwo(c) -> (RSB (SLLconst <x.Type> [log2(c)] x) a) 594 (MULS (MOVWconst [c]) x a) && isPowerOfTwo(c-1) && int32(c) >= 3 -> (RSB (ADDshiftLL <x.Type> x x [log2(c-1)]) a) 595 (MULS (MOVWconst [c]) x a) && isPowerOfTwo(c+1) && int32(c) >= 7 -> (RSB (RSBshiftLL <x.Type> x x [log2(c+1)]) a) 596 (MULS (MOVWconst [c]) x a) && c%3 == 0 && isPowerOfTwo(c/3) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/3)] (ADDshiftLL <x.Type> x x [1])) a) 597 (MULS (MOVWconst [c]) x a) && c%5 == 0 && isPowerOfTwo(c/5) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/5)] (ADDshiftLL <x.Type> x x [2])) a) 598 (MULS (MOVWconst [c]) x a) && c%7 == 0 && isPowerOfTwo(c/7) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/7)] (RSBshiftLL <x.Type> x x [3])) a) 599 (MULS (MOVWconst [c]) x a) && c%9 == 0 && isPowerOfTwo(c/9) && is32Bit(c) -> (RSB (SLLconst <x.Type> [log2(c/9)] (ADDshiftLL <x.Type> x x [3])) a) 600 601 // div by constant 602 (Select0 (CALLudiv x (MOVWconst [1]))) -> x 603 (Select1 (CALLudiv _ (MOVWconst [1]))) -> (MOVWconst [0]) 604 (Select0 (CALLudiv x (MOVWconst [c]))) && isPowerOfTwo(c) -> (SRLconst [log2(c)] x) 605 (Select1 (CALLudiv x (MOVWconst [c]))) && isPowerOfTwo(c) -> (ANDconst [c-1] x) 606 607 // constant comparisons 608 (CMPconst (MOVWconst [x]) [y]) && int32(x)==int32(y) -> (FlagEQ) 609 (CMPconst (MOVWconst [x]) [y]) && int32(x)<int32(y) && uint32(x)<uint32(y) -> (FlagLT_ULT) 610 (CMPconst (MOVWconst [x]) [y]) && int32(x)<int32(y) && uint32(x)>uint32(y) -> (FlagLT_UGT) 611 (CMPconst (MOVWconst [x]) [y]) && int32(x)>int32(y) && uint32(x)<uint32(y) -> (FlagGT_ULT) 612 (CMPconst (MOVWconst [x]) [y]) && int32(x)>int32(y) && uint32(x)>uint32(y) -> (FlagGT_UGT) 613 (CMNconst (MOVWconst [x]) [y]) && int32(x)==int32(-y) -> (FlagEQ) 614 (CMNconst (MOVWconst [x]) [y]) && int32(x)<int32(-y) && uint32(x)<uint32(-y) -> (FlagLT_ULT) 615 (CMNconst (MOVWconst [x]) [y]) && int32(x)<int32(-y) && uint32(x)>uint32(-y) -> (FlagLT_UGT) 616 (CMNconst (MOVWconst [x]) [y]) && int32(x)>int32(-y) && uint32(x)<uint32(-y) -> (FlagGT_ULT) 617 (CMNconst (MOVWconst [x]) [y]) && int32(x)>int32(-y) && uint32(x)>uint32(-y) -> (FlagGT_UGT) 618 (TSTconst (MOVWconst [x]) [y]) && int32(x&y)==0 -> (FlagEQ) 619 (TSTconst (MOVWconst [x]) [y]) && int32(x&y)<0 -> (FlagLT_UGT) 620 (TSTconst (MOVWconst [x]) [y]) && int32(x&y)>0 -> (FlagGT_UGT) 621 (TEQconst (MOVWconst [x]) [y]) && int32(x^y)==0 -> (FlagEQ) 622 (TEQconst (MOVWconst [x]) [y]) && int32(x^y)<0 -> (FlagLT_UGT) 623 (TEQconst (MOVWconst [x]) [y]) && int32(x^y)>0 -> (FlagGT_UGT) 624 625 // other known comparisons 626 (CMPconst (MOVBUreg _) [c]) && 0xff < c -> (FlagLT_ULT) 627 (CMPconst (MOVHUreg _) [c]) && 0xffff < c -> (FlagLT_ULT) 628 (CMPconst (ANDconst _ [m]) [n]) && 0 <= int32(m) && int32(m) < int32(n) -> (FlagLT_ULT) 629 (CMPconst (SRLconst _ [c]) [n]) && 0 <= n && 0 < c && c <= 32 && (1<<uint32(32-c)) <= uint32(n) -> (FlagLT_ULT) 630 631 // absorb flag constants into branches 632 (EQ (FlagEQ) yes no) -> (First nil yes no) 633 (EQ (FlagLT_ULT) yes no) -> (First nil no yes) 634 (EQ (FlagLT_UGT) yes no) -> (First nil no yes) 635 (EQ (FlagGT_ULT) yes no) -> (First nil no yes) 636 (EQ (FlagGT_UGT) yes no) -> (First nil no yes) 637 638 (NE (FlagEQ) yes no) -> (First nil no yes) 639 (NE (FlagLT_ULT) yes no) -> (First nil yes no) 640 (NE (FlagLT_UGT) yes no) -> (First nil yes no) 641 (NE (FlagGT_ULT) yes no) -> (First nil yes no) 642 (NE (FlagGT_UGT) yes no) -> (First nil yes no) 643 644 (LT (FlagEQ) yes no) -> (First nil no yes) 645 (LT (FlagLT_ULT) yes no) -> (First nil yes no) 646 (LT (FlagLT_UGT) yes no) -> (First nil yes no) 647 (LT (FlagGT_ULT) yes no) -> (First nil no yes) 648 (LT (FlagGT_UGT) yes no) -> (First nil no yes) 649 650 (LE (FlagEQ) yes no) -> (First nil yes no) 651 (LE (FlagLT_ULT) yes no) -> (First nil yes no) 652 (LE (FlagLT_UGT) yes no) -> (First nil yes no) 653 (LE (FlagGT_ULT) yes no) -> (First nil no yes) 654 (LE (FlagGT_UGT) yes no) -> (First nil no yes) 655 656 (GT (FlagEQ) yes no) -> (First nil no yes) 657 (GT (FlagLT_ULT) yes no) -> (First nil no yes) 658 (GT (FlagLT_UGT) yes no) -> (First nil no yes) 659 (GT (FlagGT_ULT) yes no) -> (First nil yes no) 660 (GT (FlagGT_UGT) yes no) -> (First nil yes no) 661 662 (GE (FlagEQ) yes no) -> (First nil yes no) 663 (GE (FlagLT_ULT) yes no) -> (First nil no yes) 664 (GE (FlagLT_UGT) yes no) -> (First nil no yes) 665 (GE (FlagGT_ULT) yes no) -> (First nil yes no) 666 (GE (FlagGT_UGT) yes no) -> (First nil yes no) 667 668 (ULT (FlagEQ) yes no) -> (First nil no yes) 669 (ULT (FlagLT_ULT) yes no) -> (First nil yes no) 670 (ULT (FlagLT_UGT) yes no) -> (First nil no yes) 671 (ULT (FlagGT_ULT) yes no) -> (First nil yes no) 672 (ULT (FlagGT_UGT) yes no) -> (First nil no yes) 673 674 (ULE (FlagEQ) yes no) -> (First nil yes no) 675 (ULE (FlagLT_ULT) yes no) -> (First nil yes no) 676 (ULE (FlagLT_UGT) yes no) -> (First nil no yes) 677 (ULE (FlagGT_ULT) yes no) -> (First nil yes no) 678 (ULE (FlagGT_UGT) yes no) -> (First nil no yes) 679 680 (UGT (FlagEQ) yes no) -> (First nil no yes) 681 (UGT (FlagLT_ULT) yes no) -> (First nil no yes) 682 (UGT (FlagLT_UGT) yes no) -> (First nil yes no) 683 (UGT (FlagGT_ULT) yes no) -> (First nil no yes) 684 (UGT (FlagGT_UGT) yes no) -> (First nil yes no) 685 686 (UGE (FlagEQ) yes no) -> (First nil yes no) 687 (UGE (FlagLT_ULT) yes no) -> (First nil no yes) 688 (UGE (FlagLT_UGT) yes no) -> (First nil yes no) 689 (UGE (FlagGT_ULT) yes no) -> (First nil no yes) 690 (UGE (FlagGT_UGT) yes no) -> (First nil yes no) 691 692 // absorb InvertFlags into branches 693 (LT (InvertFlags cmp) yes no) -> (GT cmp yes no) 694 (GT (InvertFlags cmp) yes no) -> (LT cmp yes no) 695 (LE (InvertFlags cmp) yes no) -> (GE cmp yes no) 696 (GE (InvertFlags cmp) yes no) -> (LE cmp yes no) 697 (ULT (InvertFlags cmp) yes no) -> (UGT cmp yes no) 698 (UGT (InvertFlags cmp) yes no) -> (ULT cmp yes no) 699 (ULE (InvertFlags cmp) yes no) -> (UGE cmp yes no) 700 (UGE (InvertFlags cmp) yes no) -> (ULE cmp yes no) 701 (EQ (InvertFlags cmp) yes no) -> (EQ cmp yes no) 702 (NE (InvertFlags cmp) yes no) -> (NE cmp yes no) 703 704 // absorb flag constants into boolean values 705 (Equal (FlagEQ)) -> (MOVWconst [1]) 706 (Equal (FlagLT_ULT)) -> (MOVWconst [0]) 707 (Equal (FlagLT_UGT)) -> (MOVWconst [0]) 708 (Equal (FlagGT_ULT)) -> (MOVWconst [0]) 709 (Equal (FlagGT_UGT)) -> (MOVWconst [0]) 710 711 (NotEqual (FlagEQ)) -> (MOVWconst [0]) 712 (NotEqual (FlagLT_ULT)) -> (MOVWconst [1]) 713 (NotEqual (FlagLT_UGT)) -> (MOVWconst [1]) 714 (NotEqual (FlagGT_ULT)) -> (MOVWconst [1]) 715 (NotEqual (FlagGT_UGT)) -> (MOVWconst [1]) 716 717 (LessThan (FlagEQ)) -> (MOVWconst [0]) 718 (LessThan (FlagLT_ULT)) -> (MOVWconst [1]) 719 (LessThan (FlagLT_UGT)) -> (MOVWconst [1]) 720 (LessThan (FlagGT_ULT)) -> (MOVWconst [0]) 721 (LessThan (FlagGT_UGT)) -> (MOVWconst [0]) 722 723 (LessThanU (FlagEQ)) -> (MOVWconst [0]) 724 (LessThanU (FlagLT_ULT)) -> (MOVWconst [1]) 725 (LessThanU (FlagLT_UGT)) -> (MOVWconst [0]) 726 (LessThanU (FlagGT_ULT)) -> (MOVWconst [1]) 727 (LessThanU (FlagGT_UGT)) -> (MOVWconst [0]) 728 729 (LessEqual (FlagEQ)) -> (MOVWconst [1]) 730 (LessEqual (FlagLT_ULT)) -> (MOVWconst [1]) 731 (LessEqual (FlagLT_UGT)) -> (MOVWconst [1]) 732 (LessEqual (FlagGT_ULT)) -> (MOVWconst [0]) 733 (LessEqual (FlagGT_UGT)) -> (MOVWconst [0]) 734 735 (LessEqualU (FlagEQ)) -> (MOVWconst [1]) 736 (LessEqualU (FlagLT_ULT)) -> (MOVWconst [1]) 737 (LessEqualU (FlagLT_UGT)) -> (MOVWconst [0]) 738 (LessEqualU (FlagGT_ULT)) -> (MOVWconst [1]) 739 (LessEqualU (FlagGT_UGT)) -> (MOVWconst [0]) 740 741 (GreaterThan (FlagEQ)) -> (MOVWconst [0]) 742 (GreaterThan (FlagLT_ULT)) -> (MOVWconst [0]) 743 (GreaterThan (FlagLT_UGT)) -> (MOVWconst [0]) 744 (GreaterThan (FlagGT_ULT)) -> (MOVWconst [1]) 745 (GreaterThan (FlagGT_UGT)) -> (MOVWconst [1]) 746 747 (GreaterThanU (FlagEQ)) -> (MOVWconst [0]) 748 (GreaterThanU (FlagLT_ULT)) -> (MOVWconst [0]) 749 (GreaterThanU (FlagLT_UGT)) -> (MOVWconst [1]) 750 (GreaterThanU (FlagGT_ULT)) -> (MOVWconst [0]) 751 (GreaterThanU (FlagGT_UGT)) -> (MOVWconst [1]) 752 753 (GreaterEqual (FlagEQ)) -> (MOVWconst [1]) 754 (GreaterEqual (FlagLT_ULT)) -> (MOVWconst [0]) 755 (GreaterEqual (FlagLT_UGT)) -> (MOVWconst [0]) 756 (GreaterEqual (FlagGT_ULT)) -> (MOVWconst [1]) 757 (GreaterEqual (FlagGT_UGT)) -> (MOVWconst [1]) 758 759 (GreaterEqualU (FlagEQ)) -> (MOVWconst [1]) 760 (GreaterEqualU (FlagLT_ULT)) -> (MOVWconst [0]) 761 (GreaterEqualU (FlagLT_UGT)) -> (MOVWconst [1]) 762 (GreaterEqualU (FlagGT_ULT)) -> (MOVWconst [0]) 763 (GreaterEqualU (FlagGT_UGT)) -> (MOVWconst [1]) 764 765 // absorb InvertFlags into boolean values 766 (Equal (InvertFlags x)) -> (Equal x) 767 (NotEqual (InvertFlags x)) -> (NotEqual x) 768 (LessThan (InvertFlags x)) -> (GreaterThan x) 769 (LessThanU (InvertFlags x)) -> (GreaterThanU x) 770 (GreaterThan (InvertFlags x)) -> (LessThan x) 771 (GreaterThanU (InvertFlags x)) -> (LessThanU x) 772 (LessEqual (InvertFlags x)) -> (GreaterEqual x) 773 (LessEqualU (InvertFlags x)) -> (GreaterEqualU x) 774 (GreaterEqual (InvertFlags x)) -> (LessEqual x) 775 (GreaterEqualU (InvertFlags x)) -> (LessEqualU x) 776 777 // absorb flag constants into conditional instructions 778 (CMOVWLSconst _ (FlagEQ) [c]) -> (MOVWconst [c]) 779 (CMOVWLSconst _ (FlagLT_ULT) [c]) -> (MOVWconst [c]) 780 (CMOVWLSconst x (FlagLT_UGT)) -> x 781 (CMOVWLSconst _ (FlagGT_ULT) [c]) -> (MOVWconst [c]) 782 (CMOVWLSconst x (FlagGT_UGT)) -> x 783 784 (CMOVWHSconst _ (FlagEQ) [c]) -> (MOVWconst [c]) 785 (CMOVWHSconst x (FlagLT_ULT)) -> x 786 (CMOVWHSconst _ (FlagLT_UGT) [c]) -> (MOVWconst [c]) 787 (CMOVWHSconst x (FlagGT_ULT)) -> x 788 (CMOVWHSconst _ (FlagGT_UGT) [c]) -> (MOVWconst [c]) 789 790 (CMOVWLSconst x (InvertFlags flags) [c]) -> (CMOVWHSconst x flags [c]) 791 (CMOVWHSconst x (InvertFlags flags) [c]) -> (CMOVWLSconst x flags [c]) 792 793 (SRAcond x _ (FlagEQ)) -> (SRAconst x [31]) 794 (SRAcond x y (FlagLT_ULT)) -> (SRA x y) 795 (SRAcond x _ (FlagLT_UGT)) -> (SRAconst x [31]) 796 (SRAcond x y (FlagGT_ULT)) -> (SRA x y) 797 (SRAcond x _ (FlagGT_UGT)) -> (SRAconst x [31]) 798 799 // remove redundant *const ops 800 (ADDconst [0] x) -> x 801 (SUBconst [0] x) -> x 802 (ANDconst [0] _) -> (MOVWconst [0]) 803 (ANDconst [c] x) && int32(c)==-1 -> x 804 (ORconst [0] x) -> x 805 (ORconst [c] _) && int32(c)==-1 -> (MOVWconst [-1]) 806 (XORconst [0] x) -> x 807 (BICconst [0] x) -> x 808 (BICconst [c] _) && int32(c)==-1 -> (MOVWconst [0]) 809 810 // generic constant folding 811 (ADDconst [c] x) && !isARMImmRot(uint32(c)) && isARMImmRot(uint32(-c)) -> (SUBconst [int64(int32(-c))] x) 812 (SUBconst [c] x) && !isARMImmRot(uint32(c)) && isARMImmRot(uint32(-c)) -> (ADDconst [int64(int32(-c))] x) 813 (ANDconst [c] x) && !isARMImmRot(uint32(c)) && isARMImmRot(^uint32(c)) -> (BICconst [int64(int32(^uint32(c)))] x) 814 (BICconst [c] x) && !isARMImmRot(uint32(c)) && isARMImmRot(^uint32(c)) -> (ANDconst [int64(int32(^uint32(c)))] x) 815 (ADDconst [c] x) && objabi.GOARM==7 && !isARMImmRot(uint32(c)) && uint32(c)>0xffff && uint32(-c)<=0xffff -> (SUBconst [int64(int32(-c))] x) 816 (SUBconst [c] x) && objabi.GOARM==7 && !isARMImmRot(uint32(c)) && uint32(c)>0xffff && uint32(-c)<=0xffff -> (ANDconst [int64(int32(-c))] x) 817 (ANDconst [c] x) && objabi.GOARM==7 && !isARMImmRot(uint32(c)) && uint32(c)>0xffff && ^uint32(c)<=0xffff -> (BICconst [int64(int32(^uint32(c)))] x) 818 (BICconst [c] x) && objabi.GOARM==7 && !isARMImmRot(uint32(c)) && uint32(c)>0xffff && ^uint32(c)<=0xffff -> (ANDconst [int64(int32(^uint32(c)))] x) 819 (ADDconst [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(c+d))]) 820 (ADDconst [c] (ADDconst [d] x)) -> (ADDconst [int64(int32(c+d))] x) 821 (ADDconst [c] (SUBconst [d] x)) -> (ADDconst [int64(int32(c-d))] x) 822 (ADDconst [c] (RSBconst [d] x)) -> (RSBconst [int64(int32(c+d))] x) 823 (ADCconst [c] (ADDconst [d] x) flags) -> (ADCconst [int64(int32(c+d))] x flags) 824 (ADCconst [c] (SUBconst [d] x) flags) -> (ADCconst [int64(int32(c-d))] x flags) 825 (SUBconst [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(d-c))]) 826 (SUBconst [c] (SUBconst [d] x)) -> (ADDconst [int64(int32(-c-d))] x) 827 (SUBconst [c] (ADDconst [d] x)) -> (ADDconst [int64(int32(-c+d))] x) 828 (SUBconst [c] (RSBconst [d] x)) -> (RSBconst [int64(int32(-c+d))] x) 829 (SBCconst [c] (ADDconst [d] x) flags) -> (SBCconst [int64(int32(c-d))] x flags) 830 (SBCconst [c] (SUBconst [d] x) flags) -> (SBCconst [int64(int32(c+d))] x flags) 831 (RSBconst [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(c-d))]) 832 (RSBconst [c] (RSBconst [d] x)) -> (ADDconst [int64(int32(c-d))] x) 833 (RSBconst [c] (ADDconst [d] x)) -> (RSBconst [int64(int32(c-d))] x) 834 (RSBconst [c] (SUBconst [d] x)) -> (RSBconst [int64(int32(c+d))] x) 835 (RSCconst [c] (ADDconst [d] x) flags) -> (RSCconst [int64(int32(c-d))] x flags) 836 (RSCconst [c] (SUBconst [d] x) flags) -> (RSCconst [int64(int32(c+d))] x flags) 837 (SLLconst [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(uint32(d)<<uint64(c)))]) 838 (SRLconst [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(uint32(d)>>uint64(c)))]) 839 (SRAconst [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(d)>>uint64(c))]) 840 (MUL (MOVWconst [c]) (MOVWconst [d])) -> (MOVWconst [int64(int32(c*d))]) 841 (MULA (MOVWconst [c]) (MOVWconst [d]) a) -> (ADDconst [int64(int32(c*d))] a) 842 (MULS (MOVWconst [c]) (MOVWconst [d]) a) -> (SUBconst [int64(int32(c*d))] a) 843 (Select0 (CALLudiv (MOVWconst [c]) (MOVWconst [d]))) -> (MOVWconst [int64(int32(uint32(c)/uint32(d)))]) 844 (Select1 (CALLudiv (MOVWconst [c]) (MOVWconst [d]))) -> (MOVWconst [int64(int32(uint32(c)%uint32(d)))]) 845 (ANDconst [c] (MOVWconst [d])) -> (MOVWconst [c&d]) 846 (ANDconst [c] (ANDconst [d] x)) -> (ANDconst [c&d] x) 847 (ORconst [c] (MOVWconst [d])) -> (MOVWconst [c|d]) 848 (ORconst [c] (ORconst [d] x)) -> (ORconst [c|d] x) 849 (XORconst [c] (MOVWconst [d])) -> (MOVWconst [c^d]) 850 (XORconst [c] (XORconst [d] x)) -> (XORconst [c^d] x) 851 (BICconst [c] (MOVWconst [d])) -> (MOVWconst [d&^c]) 852 (BICconst [c] (BICconst [d] x)) -> (BICconst [int64(int32(c|d))] x) 853 (MVN (MOVWconst [c])) -> (MOVWconst [^c]) 854 (MOVBreg (MOVWconst [c])) -> (MOVWconst [int64(int8(c))]) 855 (MOVBUreg (MOVWconst [c])) -> (MOVWconst [int64(uint8(c))]) 856 (MOVHreg (MOVWconst [c])) -> (MOVWconst [int64(int16(c))]) 857 (MOVHUreg (MOVWconst [c])) -> (MOVWconst [int64(uint16(c))]) 858 (MOVWreg (MOVWconst [c])) -> (MOVWconst [c]) 859 // BFX: Width = c >> 8, LSB = c & 0xff, result = d << (32 - Width - LSB) >> (32 - Width) 860 (BFX [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(d)<<(32-uint32(c&0xff)-uint32(c>>8))>>(32-uint32(c>>8)))]) 861 (BFXU [c] (MOVWconst [d])) -> (MOVWconst [int64(int32(uint32(d)<<(32-uint32(c&0xff)-uint32(c>>8))>>(32-uint32(c>>8))))]) 862 863 // absorb shifts into ops 864 (ADD x (SLLconst [c] y)) -> (ADDshiftLL x y [c]) 865 (ADD x (SRLconst [c] y)) -> (ADDshiftRL x y [c]) 866 (ADD x (SRAconst [c] y)) -> (ADDshiftRA x y [c]) 867 (ADD x (SLL y z)) -> (ADDshiftLLreg x y z) 868 (ADD x (SRL y z)) -> (ADDshiftRLreg x y z) 869 (ADD x (SRA y z)) -> (ADDshiftRAreg x y z) 870 (ADC x (SLLconst [c] y) flags) -> (ADCshiftLL x y [c] flags) 871 (ADC (SLLconst [c] y) x flags) -> (ADCshiftLL x y [c] flags) 872 (ADC x (SRLconst [c] y) flags) -> (ADCshiftRL x y [c] flags) 873 (ADC (SRLconst [c] y) x flags) -> (ADCshiftRL x y [c] flags) 874 (ADC x (SRAconst [c] y) flags) -> (ADCshiftRA x y [c] flags) 875 (ADC (SRAconst [c] y) x flags) -> (ADCshiftRA x y [c] flags) 876 (ADC x (SLL y z) flags) -> (ADCshiftLLreg x y z flags) 877 (ADC (SLL y z) x flags) -> (ADCshiftLLreg x y z flags) 878 (ADC x (SRL y z) flags) -> (ADCshiftRLreg x y z flags) 879 (ADC (SRL y z) x flags) -> (ADCshiftRLreg x y z flags) 880 (ADC x (SRA y z) flags) -> (ADCshiftRAreg x y z flags) 881 (ADC (SRA y z) x flags) -> (ADCshiftRAreg x y z flags) 882 (ADDS x (SLLconst [c] y)) -> (ADDSshiftLL x y [c]) 883 (ADDS x (SRLconst [c] y)) -> (ADDSshiftRL x y [c]) 884 (ADDS x (SRAconst [c] y)) -> (ADDSshiftRA x y [c]) 885 (ADDS x (SLL y z)) -> (ADDSshiftLLreg x y z) 886 (ADDS x (SRL y z)) -> (ADDSshiftRLreg x y z) 887 (ADDS x (SRA y z)) -> (ADDSshiftRAreg x y z) 888 (SUB x (SLLconst [c] y)) -> (SUBshiftLL x y [c]) 889 (SUB (SLLconst [c] y) x) -> (RSBshiftLL x y [c]) 890 (SUB x (SRLconst [c] y)) -> (SUBshiftRL x y [c]) 891 (SUB (SRLconst [c] y) x) -> (RSBshiftRL x y [c]) 892 (SUB x (SRAconst [c] y)) -> (SUBshiftRA x y [c]) 893 (SUB (SRAconst [c] y) x) -> (RSBshiftRA x y [c]) 894 (SUB x (SLL y z)) -> (SUBshiftLLreg x y z) 895 (SUB (SLL y z) x) -> (RSBshiftLLreg x y z) 896 (SUB x (SRL y z)) -> (SUBshiftRLreg x y z) 897 (SUB (SRL y z) x) -> (RSBshiftRLreg x y z) 898 (SUB x (SRA y z)) -> (SUBshiftRAreg x y z) 899 (SUB (SRA y z) x) -> (RSBshiftRAreg x y z) 900 (SBC x (SLLconst [c] y) flags) -> (SBCshiftLL x y [c] flags) 901 (SBC (SLLconst [c] y) x flags) -> (RSCshiftLL x y [c] flags) 902 (SBC x (SRLconst [c] y) flags) -> (SBCshiftRL x y [c] flags) 903 (SBC (SRLconst [c] y) x flags) -> (RSCshiftRL x y [c] flags) 904 (SBC x (SRAconst [c] y) flags) -> (SBCshiftRA x y [c] flags) 905 (SBC (SRAconst [c] y) x flags) -> (RSCshiftRA x y [c] flags) 906 (SBC x (SLL y z) flags) -> (SBCshiftLLreg x y z flags) 907 (SBC (SLL y z) x flags) -> (RSCshiftLLreg x y z flags) 908 (SBC x (SRL y z) flags) -> (SBCshiftRLreg x y z flags) 909 (SBC (SRL y z) x flags) -> (RSCshiftRLreg x y z flags) 910 (SBC x (SRA y z) flags) -> (SBCshiftRAreg x y z flags) 911 (SBC (SRA y z) x flags) -> (RSCshiftRAreg x y z flags) 912 (SUBS x (SLLconst [c] y)) -> (SUBSshiftLL x y [c]) 913 (SUBS (SLLconst [c] y) x) -> (RSBSshiftLL x y [c]) 914 (SUBS x (SRLconst [c] y)) -> (SUBSshiftRL x y [c]) 915 (SUBS (SRLconst [c] y) x) -> (RSBSshiftRL x y [c]) 916 (SUBS x (SRAconst [c] y)) -> (SUBSshiftRA x y [c]) 917 (SUBS (SRAconst [c] y) x) -> (RSBSshiftRA x y [c]) 918 (SUBS x (SLL y z)) -> (SUBSshiftLLreg x y z) 919 (SUBS (SLL y z) x) -> (RSBSshiftLLreg x y z) 920 (SUBS x (SRL y z)) -> (SUBSshiftRLreg x y z) 921 (SUBS (SRL y z) x) -> (RSBSshiftRLreg x y z) 922 (SUBS x (SRA y z)) -> (SUBSshiftRAreg x y z) 923 (SUBS (SRA y z) x) -> (RSBSshiftRAreg x y z) 924 (RSB x (SLLconst [c] y)) -> (RSBshiftLL x y [c]) 925 (RSB (SLLconst [c] y) x) -> (SUBshiftLL x y [c]) 926 (RSB x (SRLconst [c] y)) -> (RSBshiftRL x y [c]) 927 (RSB (SRLconst [c] y) x) -> (SUBshiftRL x y [c]) 928 (RSB x (SRAconst [c] y)) -> (RSBshiftRA x y [c]) 929 (RSB (SRAconst [c] y) x) -> (SUBshiftRA x y [c]) 930 (RSB x (SLL y z)) -> (RSBshiftLLreg x y z) 931 (RSB (SLL y z) x) -> (SUBshiftLLreg x y z) 932 (RSB x (SRL y z)) -> (RSBshiftRLreg x y z) 933 (RSB (SRL y z) x) -> (SUBshiftRLreg x y z) 934 (RSB x (SRA y z)) -> (RSBshiftRAreg x y z) 935 (RSB (SRA y z) x) -> (SUBshiftRAreg x y z) 936 (AND x (SLLconst [c] y)) -> (ANDshiftLL x y [c]) 937 (AND x (SRLconst [c] y)) -> (ANDshiftRL x y [c]) 938 (AND x (SRAconst [c] y)) -> (ANDshiftRA x y [c]) 939 (AND x (SLL y z)) -> (ANDshiftLLreg x y z) 940 (AND x (SRL y z)) -> (ANDshiftRLreg x y z) 941 (AND x (SRA y z)) -> (ANDshiftRAreg x y z) 942 (OR x (SLLconst [c] y)) -> (ORshiftLL x y [c]) 943 (OR x (SRLconst [c] y)) -> (ORshiftRL x y [c]) 944 (OR x (SRAconst [c] y)) -> (ORshiftRA x y [c]) 945 (OR x (SLL y z)) -> (ORshiftLLreg x y z) 946 (OR x (SRL y z)) -> (ORshiftRLreg x y z) 947 (OR x (SRA y z)) -> (ORshiftRAreg x y z) 948 (XOR x (SLLconst [c] y)) -> (XORshiftLL x y [c]) 949 (XOR x (SRLconst [c] y)) -> (XORshiftRL x y [c]) 950 (XOR x (SRAconst [c] y)) -> (XORshiftRA x y [c]) 951 (XOR x (SRRconst [c] y)) -> (XORshiftRR x y [c]) 952 (XOR x (SLL y z)) -> (XORshiftLLreg x y z) 953 (XOR x (SRL y z)) -> (XORshiftRLreg x y z) 954 (XOR x (SRA y z)) -> (XORshiftRAreg x y z) 955 (BIC x (SLLconst [c] y)) -> (BICshiftLL x y [c]) 956 (BIC x (SRLconst [c] y)) -> (BICshiftRL x y [c]) 957 (BIC x (SRAconst [c] y)) -> (BICshiftRA x y [c]) 958 (BIC x (SLL y z)) -> (BICshiftLLreg x y z) 959 (BIC x (SRL y z)) -> (BICshiftRLreg x y z) 960 (BIC x (SRA y z)) -> (BICshiftRAreg x y z) 961 (MVN (SLLconst [c] x)) -> (MVNshiftLL x [c]) 962 (MVN (SRLconst [c] x)) -> (MVNshiftRL x [c]) 963 (MVN (SRAconst [c] x)) -> (MVNshiftRA x [c]) 964 (MVN (SLL x y)) -> (MVNshiftLLreg x y) 965 (MVN (SRL x y)) -> (MVNshiftRLreg x y) 966 (MVN (SRA x y)) -> (MVNshiftRAreg x y) 967 968 (CMP x (SLLconst [c] y)) -> (CMPshiftLL x y [c]) 969 (CMP (SLLconst [c] y) x) -> (InvertFlags (CMPshiftLL x y [c])) 970 (CMP x (SRLconst [c] y)) -> (CMPshiftRL x y [c]) 971 (CMP (SRLconst [c] y) x) -> (InvertFlags (CMPshiftRL x y [c])) 972 (CMP x (SRAconst [c] y)) -> (CMPshiftRA x y [c]) 973 (CMP (SRAconst [c] y) x) -> (InvertFlags (CMPshiftRA x y [c])) 974 (CMP x (SLL y z)) -> (CMPshiftLLreg x y z) 975 (CMP (SLL y z) x) -> (InvertFlags (CMPshiftLLreg x y z)) 976 (CMP x (SRL y z)) -> (CMPshiftRLreg x y z) 977 (CMP (SRL y z) x) -> (InvertFlags (CMPshiftRLreg x y z)) 978 (CMP x (SRA y z)) -> (CMPshiftRAreg x y z) 979 (CMP (SRA y z) x) -> (InvertFlags (CMPshiftRAreg x y z)) 980 (TST x (SLLconst [c] y)) -> (TSTshiftLL x y [c]) 981 (TST x (SRLconst [c] y)) -> (TSTshiftRL x y [c]) 982 (TST x (SRAconst [c] y)) -> (TSTshiftRA x y [c]) 983 (TST x (SLL y z)) -> (TSTshiftLLreg x y z) 984 (TST x (SRL y z)) -> (TSTshiftRLreg x y z) 985 (TST x (SRA y z)) -> (TSTshiftRAreg x y z) 986 (TEQ x (SLLconst [c] y)) -> (TEQshiftLL x y [c]) 987 (TEQ x (SRLconst [c] y)) -> (TEQshiftRL x y [c]) 988 (TEQ x (SRAconst [c] y)) -> (TEQshiftRA x y [c]) 989 (TEQ x (SLL y z)) -> (TEQshiftLLreg x y z) 990 (TEQ x (SRL y z)) -> (TEQshiftRLreg x y z) 991 (TEQ x (SRA y z)) -> (TEQshiftRAreg x y z) 992 (CMN x (SLLconst [c] y)) -> (CMNshiftLL x y [c]) 993 (CMN x (SRLconst [c] y)) -> (CMNshiftRL x y [c]) 994 (CMN x (SRAconst [c] y)) -> (CMNshiftRA x y [c]) 995 (CMN x (SLL y z)) -> (CMNshiftLLreg x y z) 996 (CMN x (SRL y z)) -> (CMNshiftRLreg x y z) 997 (CMN x (SRA y z)) -> (CMNshiftRAreg x y z) 998 999 // prefer *const ops to *shift ops 1000 (ADDshiftLL (MOVWconst [c]) x [d]) -> (ADDconst [c] (SLLconst <x.Type> x [d])) 1001 (ADDshiftRL (MOVWconst [c]) x [d]) -> (ADDconst [c] (SRLconst <x.Type> x [d])) 1002 (ADDshiftRA (MOVWconst [c]) x [d]) -> (ADDconst [c] (SRAconst <x.Type> x [d])) 1003 (ADCshiftLL (MOVWconst [c]) x [d] flags) -> (ADCconst [c] (SLLconst <x.Type> x [d]) flags) 1004 (ADCshiftRL (MOVWconst [c]) x [d] flags) -> (ADCconst [c] (SRLconst <x.Type> x [d]) flags) 1005 (ADCshiftRA (MOVWconst [c]) x [d] flags) -> (ADCconst [c] (SRAconst <x.Type> x [d]) flags) 1006 (ADDSshiftLL (MOVWconst [c]) x [d]) -> (ADDSconst [c] (SLLconst <x.Type> x [d])) 1007 (ADDSshiftRL (MOVWconst [c]) x [d]) -> (ADDSconst [c] (SRLconst <x.Type> x [d])) 1008 (ADDSshiftRA (MOVWconst [c]) x [d]) -> (ADDSconst [c] (SRAconst <x.Type> x [d])) 1009 (SUBshiftLL (MOVWconst [c]) x [d]) -> (RSBconst [c] (SLLconst <x.Type> x [d])) 1010 (SUBshiftRL (MOVWconst [c]) x [d]) -> (RSBconst [c] (SRLconst <x.Type> x [d])) 1011 (SUBshiftRA (MOVWconst [c]) x [d]) -> (RSBconst [c] (SRAconst <x.Type> x [d])) 1012 (SBCshiftLL (MOVWconst [c]) x [d] flags) -> (RSCconst [c] (SLLconst <x.Type> x [d]) flags) 1013 (SBCshiftRL (MOVWconst [c]) x [d] flags) -> (RSCconst [c] (SRLconst <x.Type> x [d]) flags) 1014 (SBCshiftRA (MOVWconst [c]) x [d] flags) -> (RSCconst [c] (SRAconst <x.Type> x [d]) flags) 1015 (SUBSshiftLL (MOVWconst [c]) x [d]) -> (RSBSconst [c] (SLLconst <x.Type> x [d])) 1016 (SUBSshiftRL (MOVWconst [c]) x [d]) -> (RSBSconst [c] (SRLconst <x.Type> x [d])) 1017 (SUBSshiftRA (MOVWconst [c]) x [d]) -> (RSBSconst [c] (SRAconst <x.Type> x [d])) 1018 (RSBshiftLL (MOVWconst [c]) x [d]) -> (SUBconst [c] (SLLconst <x.Type> x [d])) 1019 (RSBshiftRL (MOVWconst [c]) x [d]) -> (SUBconst [c] (SRLconst <x.Type> x [d])) 1020 (RSBshiftRA (MOVWconst [c]) x [d]) -> (SUBconst [c] (SRAconst <x.Type> x [d])) 1021 (RSCshiftLL (MOVWconst [c]) x [d] flags) -> (SBCconst [c] (SLLconst <x.Type> x [d]) flags) 1022 (RSCshiftRL (MOVWconst [c]) x [d] flags) -> (SBCconst [c] (SRLconst <x.Type> x [d]) flags) 1023 (RSCshiftRA (MOVWconst [c]) x [d] flags) -> (SBCconst [c] (SRAconst <x.Type> x [d]) flags) 1024 (RSBSshiftLL (MOVWconst [c]) x [d]) -> (SUBSconst [c] (SLLconst <x.Type> x [d])) 1025 (RSBSshiftRL (MOVWconst [c]) x [d]) -> (SUBSconst [c] (SRLconst <x.Type> x [d])) 1026 (RSBSshiftRA (MOVWconst [c]) x [d]) -> (SUBSconst [c] (SRAconst <x.Type> x [d])) 1027 (ANDshiftLL (MOVWconst [c]) x [d]) -> (ANDconst [c] (SLLconst <x.Type> x [d])) 1028 (ANDshiftRL (MOVWconst [c]) x [d]) -> (ANDconst [c] (SRLconst <x.Type> x [d])) 1029 (ANDshiftRA (MOVWconst [c]) x [d]) -> (ANDconst [c] (SRAconst <x.Type> x [d])) 1030 (ORshiftLL (MOVWconst [c]) x [d]) -> (ORconst [c] (SLLconst <x.Type> x [d])) 1031 (ORshiftRL (MOVWconst [c]) x [d]) -> (ORconst [c] (SRLconst <x.Type> x [d])) 1032 (ORshiftRA (MOVWconst [c]) x [d]) -> (ORconst [c] (SRAconst <x.Type> x [d])) 1033 (XORshiftLL (MOVWconst [c]) x [d]) -> (XORconst [c] (SLLconst <x.Type> x [d])) 1034 (XORshiftRL (MOVWconst [c]) x [d]) -> (XORconst [c] (SRLconst <x.Type> x [d])) 1035 (XORshiftRA (MOVWconst [c]) x [d]) -> (XORconst [c] (SRAconst <x.Type> x [d])) 1036 (XORshiftRR (MOVWconst [c]) x [d]) -> (XORconst [c] (SRRconst <x.Type> x [d])) 1037 (CMPshiftLL (MOVWconst [c]) x [d]) -> (InvertFlags (CMPconst [c] (SLLconst <x.Type> x [d]))) 1038 (CMPshiftRL (MOVWconst [c]) x [d]) -> (InvertFlags (CMPconst [c] (SRLconst <x.Type> x [d]))) 1039 (CMPshiftRA (MOVWconst [c]) x [d]) -> (InvertFlags (CMPconst [c] (SRAconst <x.Type> x [d]))) 1040 (TSTshiftLL (MOVWconst [c]) x [d]) -> (TSTconst [c] (SLLconst <x.Type> x [d])) 1041 (TSTshiftRL (MOVWconst [c]) x [d]) -> (TSTconst [c] (SRLconst <x.Type> x [d])) 1042 (TSTshiftRA (MOVWconst [c]) x [d]) -> (TSTconst [c] (SRAconst <x.Type> x [d])) 1043 (TEQshiftLL (MOVWconst [c]) x [d]) -> (TEQconst [c] (SLLconst <x.Type> x [d])) 1044 (TEQshiftRL (MOVWconst [c]) x [d]) -> (TEQconst [c] (SRLconst <x.Type> x [d])) 1045 (TEQshiftRA (MOVWconst [c]) x [d]) -> (TEQconst [c] (SRAconst <x.Type> x [d])) 1046 (CMNshiftLL (MOVWconst [c]) x [d]) -> (CMNconst [c] (SLLconst <x.Type> x [d])) 1047 (CMNshiftRL (MOVWconst [c]) x [d]) -> (CMNconst [c] (SRLconst <x.Type> x [d])) 1048 (CMNshiftRA (MOVWconst [c]) x [d]) -> (CMNconst [c] (SRAconst <x.Type> x [d])) 1049 1050 (ADDshiftLLreg (MOVWconst [c]) x y) -> (ADDconst [c] (SLL <x.Type> x y)) 1051 (ADDshiftRLreg (MOVWconst [c]) x y) -> (ADDconst [c] (SRL <x.Type> x y)) 1052 (ADDshiftRAreg (MOVWconst [c]) x y) -> (ADDconst [c] (SRA <x.Type> x y)) 1053 (ADCshiftLLreg (MOVWconst [c]) x y flags) -> (ADCconst [c] (SLL <x.Type> x y) flags) 1054 (ADCshiftRLreg (MOVWconst [c]) x y flags) -> (ADCconst [c] (SRL <x.Type> x y) flags) 1055 (ADCshiftRAreg (MOVWconst [c]) x y flags) -> (ADCconst [c] (SRA <x.Type> x y) flags) 1056 (ADDSshiftLLreg (MOVWconst [c]) x y) -> (ADDSconst [c] (SLL <x.Type> x y)) 1057 (ADDSshiftRLreg (MOVWconst [c]) x y) -> (ADDSconst [c] (SRL <x.Type> x y)) 1058 (ADDSshiftRAreg (MOVWconst [c]) x y) -> (ADDSconst [c] (SRA <x.Type> x y)) 1059 (SUBshiftLLreg (MOVWconst [c]) x y) -> (RSBconst [c] (SLL <x.Type> x y)) 1060 (SUBshiftRLreg (MOVWconst [c]) x y) -> (RSBconst [c] (SRL <x.Type> x y)) 1061 (SUBshiftRAreg (MOVWconst [c]) x y) -> (RSBconst [c] (SRA <x.Type> x y)) 1062 (SBCshiftLLreg (MOVWconst [c]) x y flags) -> (RSCconst [c] (SLL <x.Type> x y) flags) 1063 (SBCshiftRLreg (MOVWconst [c]) x y flags) -> (RSCconst [c] (SRL <x.Type> x y) flags) 1064 (SBCshiftRAreg (MOVWconst [c]) x y flags) -> (RSCconst [c] (SRA <x.Type> x y) flags) 1065 (SUBSshiftLLreg (MOVWconst [c]) x y) -> (RSBSconst [c] (SLL <x.Type> x y)) 1066 (SUBSshiftRLreg (MOVWconst [c]) x y) -> (RSBSconst [c] (SRL <x.Type> x y)) 1067 (SUBSshiftRAreg (MOVWconst [c]) x y) -> (RSBSconst [c] (SRA <x.Type> x y)) 1068 (RSBshiftLLreg (MOVWconst [c]) x y) -> (SUBconst [c] (SLL <x.Type> x y)) 1069 (RSBshiftRLreg (MOVWconst [c]) x y) -> (SUBconst [c] (SRL <x.Type> x y)) 1070 (RSBshiftRAreg (MOVWconst [c]) x y) -> (SUBconst [c] (SRA <x.Type> x y)) 1071 (RSCshiftLLreg (MOVWconst [c]) x y flags) -> (SBCconst [c] (SLL <x.Type> x y) flags) 1072 (RSCshiftRLreg (MOVWconst [c]) x y flags) -> (SBCconst [c] (SRL <x.Type> x y) flags) 1073 (RSCshiftRAreg (MOVWconst [c]) x y flags) -> (SBCconst [c] (SRA <x.Type> x y) flags) 1074 (RSBSshiftLLreg (MOVWconst [c]) x y) -> (SUBSconst [c] (SLL <x.Type> x y)) 1075 (RSBSshiftRLreg (MOVWconst [c]) x y) -> (SUBSconst [c] (SRL <x.Type> x y)) 1076 (RSBSshiftRAreg (MOVWconst [c]) x y) -> (SUBSconst [c] (SRA <x.Type> x y)) 1077 (ANDshiftLLreg (MOVWconst [c]) x y) -> (ANDconst [c] (SLL <x.Type> x y)) 1078 (ANDshiftRLreg (MOVWconst [c]) x y) -> (ANDconst [c] (SRL <x.Type> x y)) 1079 (ANDshiftRAreg (MOVWconst [c]) x y) -> (ANDconst [c] (SRA <x.Type> x y)) 1080 (ORshiftLLreg (MOVWconst [c]) x y) -> (ORconst [c] (SLL <x.Type> x y)) 1081 (ORshiftRLreg (MOVWconst [c]) x y) -> (ORconst [c] (SRL <x.Type> x y)) 1082 (ORshiftRAreg (MOVWconst [c]) x y) -> (ORconst [c] (SRA <x.Type> x y)) 1083 (XORshiftLLreg (MOVWconst [c]) x y) -> (XORconst [c] (SLL <x.Type> x y)) 1084 (XORshiftRLreg (MOVWconst [c]) x y) -> (XORconst [c] (SRL <x.Type> x y)) 1085 (XORshiftRAreg (MOVWconst [c]) x y) -> (XORconst [c] (SRA <x.Type> x y)) 1086 (CMPshiftLLreg (MOVWconst [c]) x y) -> (InvertFlags (CMPconst [c] (SLL <x.Type> x y))) 1087 (CMPshiftRLreg (MOVWconst [c]) x y) -> (InvertFlags (CMPconst [c] (SRL <x.Type> x y))) 1088 (CMPshiftRAreg (MOVWconst [c]) x y) -> (InvertFlags (CMPconst [c] (SRA <x.Type> x y))) 1089 (TSTshiftLLreg (MOVWconst [c]) x y) -> (TSTconst [c] (SLL <x.Type> x y)) 1090 (TSTshiftRLreg (MOVWconst [c]) x y) -> (TSTconst [c] (SRL <x.Type> x y)) 1091 (TSTshiftRAreg (MOVWconst [c]) x y) -> (TSTconst [c] (SRA <x.Type> x y)) 1092 (TEQshiftLLreg (MOVWconst [c]) x y) -> (TEQconst [c] (SLL <x.Type> x y)) 1093 (TEQshiftRLreg (MOVWconst [c]) x y) -> (TEQconst [c] (SRL <x.Type> x y)) 1094 (TEQshiftRAreg (MOVWconst [c]) x y) -> (TEQconst [c] (SRA <x.Type> x y)) 1095 (CMNshiftLLreg (MOVWconst [c]) x y) -> (CMNconst [c] (SLL <x.Type> x y)) 1096 (CMNshiftRLreg (MOVWconst [c]) x y) -> (CMNconst [c] (SRL <x.Type> x y)) 1097 (CMNshiftRAreg (MOVWconst [c]) x y) -> (CMNconst [c] (SRA <x.Type> x y)) 1098 1099 // constant folding in *shift ops 1100 (ADDshiftLL x (MOVWconst [c]) [d]) -> (ADDconst x [int64(int32(uint32(c)<<uint64(d)))]) 1101 (ADDshiftRL x (MOVWconst [c]) [d]) -> (ADDconst x [int64(int32(uint32(c)>>uint64(d)))]) 1102 (ADDshiftRA x (MOVWconst [c]) [d]) -> (ADDconst x [int64(int32(c)>>uint64(d))]) 1103 (ADCshiftLL x (MOVWconst [c]) [d] flags) -> (ADCconst x [int64(int32(uint32(c)<<uint64(d)))] flags) 1104 (ADCshiftRL x (MOVWconst [c]) [d] flags) -> (ADCconst x [int64(int32(uint32(c)>>uint64(d)))] flags) 1105 (ADCshiftRA x (MOVWconst [c]) [d] flags) -> (ADCconst x [int64(int32(c)>>uint64(d))] flags) 1106 (ADDSshiftLL x (MOVWconst [c]) [d]) -> (ADDSconst x [int64(int32(uint32(c)<<uint64(d)))]) 1107 (ADDSshiftRL x (MOVWconst [c]) [d]) -> (ADDSconst x [int64(int32(uint32(c)>>uint64(d)))]) 1108 (ADDSshiftRA x (MOVWconst [c]) [d]) -> (ADDSconst x [int64(int32(c)>>uint64(d))]) 1109 (SUBshiftLL x (MOVWconst [c]) [d]) -> (SUBconst x [int64(int32(uint32(c)<<uint64(d)))]) 1110 (SUBshiftRL x (MOVWconst [c]) [d]) -> (SUBconst x [int64(int32(uint32(c)>>uint64(d)))]) 1111 (SUBshiftRA x (MOVWconst [c]) [d]) -> (SUBconst x [int64(int32(c)>>uint64(d))]) 1112 (SBCshiftLL x (MOVWconst [c]) [d] flags) -> (SBCconst x [int64(int32(uint32(c)<<uint64(d)))] flags) 1113 (SBCshiftRL x (MOVWconst [c]) [d] flags) -> (SBCconst x [int64(int32(uint32(c)>>uint64(d)))] flags) 1114 (SBCshiftRA x (MOVWconst [c]) [d] flags) -> (SBCconst x [int64(int32(c)>>uint64(d))] flags) 1115 (SUBSshiftLL x (MOVWconst [c]) [d]) -> (SUBSconst x [int64(int32(uint32(c)<<uint64(d)))]) 1116 (SUBSshiftRL x (MOVWconst [c]) [d]) -> (SUBSconst x [int64(int32(uint32(c)>>uint64(d)))]) 1117 (SUBSshiftRA x (MOVWconst [c]) [d]) -> (SUBSconst x [int64(int32(c)>>uint64(d))]) 1118 (RSBshiftLL x (MOVWconst [c]) [d]) -> (RSBconst x [int64(int32(uint32(c)<<uint64(d)))]) 1119 (RSBshiftRL x (MOVWconst [c]) [d]) -> (RSBconst x [int64(int32(uint32(c)>>uint64(d)))]) 1120 (RSBshiftRA x (MOVWconst [c]) [d]) -> (RSBconst x [int64(int32(c)>>uint64(d))]) 1121 (RSCshiftLL x (MOVWconst [c]) [d] flags) -> (RSCconst x [int64(int32(uint32(c)<<uint64(d)))] flags) 1122 (RSCshiftRL x (MOVWconst [c]) [d] flags) -> (RSCconst x [int64(int32(uint32(c)>>uint64(d)))] flags) 1123 (RSCshiftRA x (MOVWconst [c]) [d] flags) -> (RSCconst x [int64(int32(c)>>uint64(d))] flags) 1124 (RSBSshiftLL x (MOVWconst [c]) [d]) -> (RSBSconst x [int64(int32(uint32(c)<<uint64(d)))]) 1125 (RSBSshiftRL x (MOVWconst [c]) [d]) -> (RSBSconst x [int64(int32(uint32(c)>>uint64(d)))]) 1126 (RSBSshiftRA x (MOVWconst [c]) [d]) -> (RSBSconst x [int64(int32(c)>>uint64(d))]) 1127 (ANDshiftLL x (MOVWconst [c]) [d]) -> (ANDconst x [int64(int32(uint32(c)<<uint64(d)))]) 1128 (ANDshiftRL x (MOVWconst [c]) [d]) -> (ANDconst x [int64(int32(uint32(c)>>uint64(d)))]) 1129 (ANDshiftRA x (MOVWconst [c]) [d]) -> (ANDconst x [int64(int32(c)>>uint64(d))]) 1130 (ORshiftLL x (MOVWconst [c]) [d]) -> (ORconst x [int64(int32(uint32(c)<<uint64(d)))]) 1131 (ORshiftRL x (MOVWconst [c]) [d]) -> (ORconst x [int64(int32(uint32(c)>>uint64(d)))]) 1132 (ORshiftRA x (MOVWconst [c]) [d]) -> (ORconst x [int64(int32(c)>>uint64(d))]) 1133 (XORshiftLL x (MOVWconst [c]) [d]) -> (XORconst x [int64(int32(uint32(c)<<uint64(d)))]) 1134 (XORshiftRL x (MOVWconst [c]) [d]) -> (XORconst x [int64(int32(uint32(c)>>uint64(d)))]) 1135 (XORshiftRA x (MOVWconst [c]) [d]) -> (XORconst x [int64(int32(c)>>uint64(d))]) 1136 (XORshiftRR x (MOVWconst [c]) [d]) -> (XORconst x [int64(int32(uint32(c)>>uint64(d)|uint32(c)<<uint64(32-d)))]) 1137 (BICshiftLL x (MOVWconst [c]) [d]) -> (BICconst x [int64(int32(uint32(c)<<uint64(d)))]) 1138 (BICshiftRL x (MOVWconst [c]) [d]) -> (BICconst x [int64(int32(uint32(c)>>uint64(d)))]) 1139 (BICshiftRA x (MOVWconst [c]) [d]) -> (BICconst x [int64(int32(c)>>uint64(d))]) 1140 (MVNshiftLL (MOVWconst [c]) [d]) -> (MOVWconst [^int64(uint32(c)<<uint64(d))]) 1141 (MVNshiftRL (MOVWconst [c]) [d]) -> (MOVWconst [^int64(uint32(c)>>uint64(d))]) 1142 (MVNshiftRA (MOVWconst [c]) [d]) -> (MOVWconst [^int64(int32(c)>>uint64(d))]) 1143 (CMPshiftLL x (MOVWconst [c]) [d]) -> (CMPconst x [int64(int32(uint32(c)<<uint64(d)))]) 1144 (CMPshiftRL x (MOVWconst [c]) [d]) -> (CMPconst x [int64(int32(uint32(c)>>uint64(d)))]) 1145 (CMPshiftRA x (MOVWconst [c]) [d]) -> (CMPconst x [int64(int32(c)>>uint64(d))]) 1146 (TSTshiftLL x (MOVWconst [c]) [d]) -> (TSTconst x [int64(int32(uint32(c)<<uint64(d)))]) 1147 (TSTshiftRL x (MOVWconst [c]) [d]) -> (TSTconst x [int64(int32(uint32(c)>>uint64(d)))]) 1148 (TSTshiftRA x (MOVWconst [c]) [d]) -> (TSTconst x [int64(int32(c)>>uint64(d))]) 1149 (TEQshiftLL x (MOVWconst [c]) [d]) -> (TEQconst x [int64(int32(uint32(c)<<uint64(d)))]) 1150 (TEQshiftRL x (MOVWconst [c]) [d]) -> (TEQconst x [int64(int32(uint32(c)>>uint64(d)))]) 1151 (TEQshiftRA x (MOVWconst [c]) [d]) -> (TEQconst x [int64(int32(c)>>uint64(d))]) 1152 (CMNshiftLL x (MOVWconst [c]) [d]) -> (CMNconst x [int64(int32(uint32(c)<<uint64(d)))]) 1153 (CMNshiftRL x (MOVWconst [c]) [d]) -> (CMNconst x [int64(int32(uint32(c)>>uint64(d)))]) 1154 (CMNshiftRA x (MOVWconst [c]) [d]) -> (CMNconst x [int64(int32(c)>>uint64(d))]) 1155 1156 (ADDshiftLLreg x y (MOVWconst [c])) -> (ADDshiftLL x y [c]) 1157 (ADDshiftRLreg x y (MOVWconst [c])) -> (ADDshiftRL x y [c]) 1158 (ADDshiftRAreg x y (MOVWconst [c])) -> (ADDshiftRA x y [c]) 1159 (ADCshiftLLreg x y (MOVWconst [c]) flags) -> (ADCshiftLL x y [c] flags) 1160 (ADCshiftRLreg x y (MOVWconst [c]) flags) -> (ADCshiftRL x y [c] flags) 1161 (ADCshiftRAreg x y (MOVWconst [c]) flags) -> (ADCshiftRA x y [c] flags) 1162 (ADDSshiftLLreg x y (MOVWconst [c])) -> (ADDSshiftLL x y [c]) 1163 (ADDSshiftRLreg x y (MOVWconst [c])) -> (ADDSshiftRL x y [c]) 1164 (ADDSshiftRAreg x y (MOVWconst [c])) -> (ADDSshiftRA x y [c]) 1165 (SUBshiftLLreg x y (MOVWconst [c])) -> (SUBshiftLL x y [c]) 1166 (SUBshiftRLreg x y (MOVWconst [c])) -> (SUBshiftRL x y [c]) 1167 (SUBshiftRAreg x y (MOVWconst [c])) -> (SUBshiftRA x y [c]) 1168 (SBCshiftLLreg x y (MOVWconst [c]) flags) -> (SBCshiftLL x y [c] flags) 1169 (SBCshiftRLreg x y (MOVWconst [c]) flags) -> (SBCshiftRL x y [c] flags) 1170 (SBCshiftRAreg x y (MOVWconst [c]) flags) -> (SBCshiftRA x y [c] flags) 1171 (SUBSshiftLLreg x y (MOVWconst [c])) -> (SUBSshiftLL x y [c]) 1172 (SUBSshiftRLreg x y (MOVWconst [c])) -> (SUBSshiftRL x y [c]) 1173 (SUBSshiftRAreg x y (MOVWconst [c])) -> (SUBSshiftRA x y [c]) 1174 (RSBshiftLLreg x y (MOVWconst [c])) -> (RSBshiftLL x y [c]) 1175 (RSBshiftRLreg x y (MOVWconst [c])) -> (RSBshiftRL x y [c]) 1176 (RSBshiftRAreg x y (MOVWconst [c])) -> (RSBshiftRA x y [c]) 1177 (RSCshiftLLreg x y (MOVWconst [c]) flags) -> (RSCshiftLL x y [c] flags) 1178 (RSCshiftRLreg x y (MOVWconst [c]) flags) -> (RSCshiftRL x y [c] flags) 1179 (RSCshiftRAreg x y (MOVWconst [c]) flags) -> (RSCshiftRA x y [c] flags) 1180 (RSBSshiftLLreg x y (MOVWconst [c])) -> (RSBSshiftLL x y [c]) 1181 (RSBSshiftRLreg x y (MOVWconst [c])) -> (RSBSshiftRL x y [c]) 1182 (RSBSshiftRAreg x y (MOVWconst [c])) -> (RSBSshiftRA x y [c]) 1183 (ANDshiftLLreg x y (MOVWconst [c])) -> (ANDshiftLL x y [c]) 1184 (ANDshiftRLreg x y (MOVWconst [c])) -> (ANDshiftRL x y [c]) 1185 (ANDshiftRAreg x y (MOVWconst [c])) -> (ANDshiftRA x y [c]) 1186 (ORshiftLLreg x y (MOVWconst [c])) -> (ORshiftLL x y [c]) 1187 (ORshiftRLreg x y (MOVWconst [c])) -> (ORshiftRL x y [c]) 1188 (ORshiftRAreg x y (MOVWconst [c])) -> (ORshiftRA x y [c]) 1189 (XORshiftLLreg x y (MOVWconst [c])) -> (XORshiftLL x y [c]) 1190 (XORshiftRLreg x y (MOVWconst [c])) -> (XORshiftRL x y [c]) 1191 (XORshiftRAreg x y (MOVWconst [c])) -> (XORshiftRA x y [c]) 1192 (BICshiftLLreg x y (MOVWconst [c])) -> (BICshiftLL x y [c]) 1193 (BICshiftRLreg x y (MOVWconst [c])) -> (BICshiftRL x y [c]) 1194 (BICshiftRAreg x y (MOVWconst [c])) -> (BICshiftRA x y [c]) 1195 (MVNshiftLLreg x (MOVWconst [c])) -> (MVNshiftLL x [c]) 1196 (MVNshiftRLreg x (MOVWconst [c])) -> (MVNshiftRL x [c]) 1197 (MVNshiftRAreg x (MOVWconst [c])) -> (MVNshiftRA x [c]) 1198 (CMPshiftLLreg x y (MOVWconst [c])) -> (CMPshiftLL x y [c]) 1199 (CMPshiftRLreg x y (MOVWconst [c])) -> (CMPshiftRL x y [c]) 1200 (CMPshiftRAreg x y (MOVWconst [c])) -> (CMPshiftRA x y [c]) 1201 (TSTshiftLLreg x y (MOVWconst [c])) -> (TSTshiftLL x y [c]) 1202 (TSTshiftRLreg x y (MOVWconst [c])) -> (TSTshiftRL x y [c]) 1203 (TSTshiftRAreg x y (MOVWconst [c])) -> (TSTshiftRA x y [c]) 1204 (TEQshiftLLreg x y (MOVWconst [c])) -> (TEQshiftLL x y [c]) 1205 (TEQshiftRLreg x y (MOVWconst [c])) -> (TEQshiftRL x y [c]) 1206 (TEQshiftRAreg x y (MOVWconst [c])) -> (TEQshiftRA x y [c]) 1207 (CMNshiftLLreg x y (MOVWconst [c])) -> (CMNshiftLL x y [c]) 1208 (CMNshiftRLreg x y (MOVWconst [c])) -> (CMNshiftRL x y [c]) 1209 (CMNshiftRAreg x y (MOVWconst [c])) -> (CMNshiftRA x y [c]) 1210 1211 // Generate rotates 1212 (ADDshiftLL [c] (SRLconst x [32-c]) x) -> (SRRconst [32-c] x) 1213 ( ORshiftLL [c] (SRLconst x [32-c]) x) -> (SRRconst [32-c] x) 1214 (XORshiftLL [c] (SRLconst x [32-c]) x) -> (SRRconst [32-c] x) 1215 (ADDshiftRL [c] (SLLconst x [32-c]) x) -> (SRRconst [ c] x) 1216 ( ORshiftRL [c] (SLLconst x [32-c]) x) -> (SRRconst [ c] x) 1217 (XORshiftRL [c] (SLLconst x [32-c]) x) -> (SRRconst [ c] x) 1218 1219 // use indexed loads and stores 1220 (MOVWload [0] {sym} (ADD ptr idx) mem) && sym == nil && !config.nacl -> (MOVWloadidx ptr idx mem) 1221 (MOVWstore [0] {sym} (ADD ptr idx) val mem) && sym == nil && !config.nacl -> (MOVWstoreidx ptr idx val mem) 1222 (MOVWload [0] {sym} (ADDshiftLL ptr idx [c]) mem) && sym == nil && !config.nacl -> (MOVWloadshiftLL ptr idx [c] mem) 1223 (MOVWload [0] {sym} (ADDshiftRL ptr idx [c]) mem) && sym == nil && !config.nacl -> (MOVWloadshiftRL ptr idx [c] mem) 1224 (MOVWload [0] {sym} (ADDshiftRA ptr idx [c]) mem) && sym == nil && !config.nacl -> (MOVWloadshiftRA ptr idx [c] mem) 1225 (MOVWstore [0] {sym} (ADDshiftLL ptr idx [c]) val mem) && sym == nil && !config.nacl -> (MOVWstoreshiftLL ptr idx [c] val mem) 1226 (MOVWstore [0] {sym} (ADDshiftRL ptr idx [c]) val mem) && sym == nil && !config.nacl -> (MOVWstoreshiftRL ptr idx [c] val mem) 1227 (MOVWstore [0] {sym} (ADDshiftRA ptr idx [c]) val mem) && sym == nil && !config.nacl -> (MOVWstoreshiftRA ptr idx [c] val mem) 1228 (MOVBUload [0] {sym} (ADD ptr idx) mem) && sym == nil && !config.nacl -> (MOVBUloadidx ptr idx mem) 1229 (MOVBload [0] {sym} (ADD ptr idx) mem) && sym == nil && !config.nacl -> (MOVBloadidx ptr idx mem) 1230 (MOVBstore [0] {sym} (ADD ptr idx) val mem) && sym == nil && !config.nacl -> (MOVBstoreidx ptr idx val mem) 1231 (MOVHUload [0] {sym} (ADD ptr idx) mem) && sym == nil && !config.nacl -> (MOVHUloadidx ptr idx mem) 1232 (MOVHload [0] {sym} (ADD ptr idx) mem) && sym == nil && !config.nacl -> (MOVHloadidx ptr idx mem) 1233 (MOVHstore [0] {sym} (ADD ptr idx) val mem) && sym == nil && !config.nacl -> (MOVHstoreidx ptr idx val mem) 1234 1235 // constant folding in indexed loads and stores 1236 (MOVWloadidx ptr (MOVWconst [c]) mem) -> (MOVWload [c] ptr mem) 1237 (MOVWloadidx (MOVWconst [c]) ptr mem) -> (MOVWload [c] ptr mem) 1238 (MOVBloadidx ptr (MOVWconst [c]) mem) -> (MOVBload [c] ptr mem) 1239 (MOVBloadidx (MOVWconst [c]) ptr mem) -> (MOVBload [c] ptr mem) 1240 (MOVBUloadidx ptr (MOVWconst [c]) mem) -> (MOVBUload [c] ptr mem) 1241 (MOVBUloadidx (MOVWconst [c]) ptr mem) -> (MOVBUload [c] ptr mem) 1242 (MOVHUloadidx ptr (MOVWconst [c]) mem) -> (MOVHUload [c] ptr mem) 1243 (MOVHUloadidx (MOVWconst [c]) ptr mem) -> (MOVHUload [c] ptr mem) 1244 (MOVHloadidx ptr (MOVWconst [c]) mem) -> (MOVHload [c] ptr mem) 1245 (MOVHloadidx (MOVWconst [c]) ptr mem) -> (MOVHload [c] ptr mem) 1246 1247 (MOVWstoreidx ptr (MOVWconst [c]) val mem) -> (MOVWstore [c] ptr val mem) 1248 (MOVWstoreidx (MOVWconst [c]) ptr val mem) -> (MOVWstore [c] ptr val mem) 1249 (MOVBstoreidx ptr (MOVWconst [c]) val mem) -> (MOVBstore [c] ptr val mem) 1250 (MOVBstoreidx (MOVWconst [c]) ptr val mem) -> (MOVBstore [c] ptr val mem) 1251 (MOVHstoreidx ptr (MOVWconst [c]) val mem) -> (MOVHstore [c] ptr val mem) 1252 (MOVHstoreidx (MOVWconst [c]) ptr val mem) -> (MOVHstore [c] ptr val mem) 1253 1254 (MOVWloadidx ptr (SLLconst idx [c]) mem) -> (MOVWloadshiftLL ptr idx [c] mem) 1255 (MOVWloadidx (SLLconst idx [c]) ptr mem) -> (MOVWloadshiftLL ptr idx [c] mem) 1256 (MOVWloadidx ptr (SRLconst idx [c]) mem) -> (MOVWloadshiftRL ptr idx [c] mem) 1257 (MOVWloadidx (SRLconst idx [c]) ptr mem) -> (MOVWloadshiftRL ptr idx [c] mem) 1258 (MOVWloadidx ptr (SRAconst idx [c]) mem) -> (MOVWloadshiftRA ptr idx [c] mem) 1259 (MOVWloadidx (SRAconst idx [c]) ptr mem) -> (MOVWloadshiftRA ptr idx [c] mem) 1260 1261 (MOVWstoreidx ptr (SLLconst idx [c]) val mem) -> (MOVWstoreshiftLL ptr idx [c] val mem) 1262 (MOVWstoreidx (SLLconst idx [c]) ptr val mem) -> (MOVWstoreshiftLL ptr idx [c] val mem) 1263 (MOVWstoreidx ptr (SRLconst idx [c]) val mem) -> (MOVWstoreshiftRL ptr idx [c] val mem) 1264 (MOVWstoreidx (SRLconst idx [c]) ptr val mem) -> (MOVWstoreshiftRL ptr idx [c] val mem) 1265 (MOVWstoreidx ptr (SRAconst idx [c]) val mem) -> (MOVWstoreshiftRA ptr idx [c] val mem) 1266 (MOVWstoreidx (SRAconst idx [c]) ptr val mem) -> (MOVWstoreshiftRA ptr idx [c] val mem) 1267 1268 (MOVWloadshiftLL ptr (MOVWconst [c]) [d] mem) -> (MOVWload [int64(uint32(c)<<uint64(d))] ptr mem) 1269 (MOVWloadshiftRL ptr (MOVWconst [c]) [d] mem) -> (MOVWload [int64(uint32(c)>>uint64(d))] ptr mem) 1270 (MOVWloadshiftRA ptr (MOVWconst [c]) [d] mem) -> (MOVWload [int64(int32(c)>>uint64(d))] ptr mem) 1271 1272 (MOVWstoreshiftLL ptr (MOVWconst [c]) [d] val mem) -> (MOVWstore [int64(uint32(c)<<uint64(d))] ptr val mem) 1273 (MOVWstoreshiftRL ptr (MOVWconst [c]) [d] val mem) -> (MOVWstore [int64(uint32(c)>>uint64(d))] ptr val mem) 1274 (MOVWstoreshiftRA ptr (MOVWconst [c]) [d] val mem) -> (MOVWstore [int64(int32(c)>>uint64(d))] ptr val mem) 1275 1276 // generic simplifications 1277 (ADD x (RSBconst [0] y)) -> (SUB x y) 1278 (ADD <t> (RSBconst [c] x) (RSBconst [d] y)) -> (RSBconst [c+d] (ADD <t> x y)) 1279 (SUB x x) -> (MOVWconst [0]) 1280 (RSB x x) -> (MOVWconst [0]) 1281 (AND x x) -> x 1282 (OR x x) -> x 1283 (XOR x x) -> (MOVWconst [0]) 1284 (BIC x x) -> (MOVWconst [0]) 1285 1286 (ADD (MUL x y) a) -> (MULA x y a) 1287 (SUB a (MUL x y)) && objabi.GOARM == 7 -> (MULS x y a) 1288 (RSB (MUL x y) a) && objabi.GOARM == 7 -> (MULS x y a) 1289 1290 (NEGF (MULF x y)) && objabi.GOARM >= 6 -> (NMULF x y) 1291 (NEGD (MULD x y)) && objabi.GOARM >= 6 -> (NMULD x y) 1292 (MULF (NEGF x) y) && objabi.GOARM >= 6 -> (NMULF x y) 1293 (MULD (NEGD x) y) && objabi.GOARM >= 6 -> (NMULD x y) 1294 (NMULF (NEGF x) y) -> (MULF x y) 1295 (NMULD (NEGD x) y) -> (MULD x y) 1296 1297 // the result will overwrite the addend, since they are in the same register 1298 (ADDF a (MULF x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULAF a x y) 1299 (ADDF a (NMULF x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULSF a x y) 1300 (ADDD a (MULD x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULAD a x y) 1301 (ADDD a (NMULD x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULSD a x y) 1302 (SUBF a (MULF x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULSF a x y) 1303 (SUBF a (NMULF x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULAF a x y) 1304 (SUBD a (MULD x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULSD a x y) 1305 (SUBD a (NMULD x y)) && a.Uses == 1 && objabi.GOARM >= 6 -> (MULAD a x y) 1306 1307 (AND x (MVN y)) -> (BIC x y) 1308 1309 // simplification with *shift ops 1310 (SUBshiftLL x (SLLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1311 (SUBshiftRL x (SRLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1312 (SUBshiftRA x (SRAconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1313 (RSBshiftLL x (SLLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1314 (RSBshiftRL x (SRLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1315 (RSBshiftRA x (SRAconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1316 (ANDshiftLL x y:(SLLconst x [c]) [d]) && c==d -> y 1317 (ANDshiftRL x y:(SRLconst x [c]) [d]) && c==d -> y 1318 (ANDshiftRA x y:(SRAconst x [c]) [d]) && c==d -> y 1319 (ORshiftLL x y:(SLLconst x [c]) [d]) && c==d -> y 1320 (ORshiftRL x y:(SRLconst x [c]) [d]) && c==d -> y 1321 (ORshiftRA x y:(SRAconst x [c]) [d]) && c==d -> y 1322 (XORshiftLL x (SLLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1323 (XORshiftRL x (SRLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1324 (XORshiftRA x (SRAconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1325 (BICshiftLL x (SLLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1326 (BICshiftRL x (SRLconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1327 (BICshiftRA x (SRAconst x [c]) [d]) && c==d -> (MOVWconst [0]) 1328 (AND x (MVNshiftLL y [c])) -> (BICshiftLL x y [c]) 1329 (AND x (MVNshiftRL y [c])) -> (BICshiftRL x y [c]) 1330 (AND x (MVNshiftRA y [c])) -> (BICshiftRA x y [c]) 1331 1332 // floating point optimizations 1333 (CMPF x (MOVFconst [0])) -> (CMPF0 x) 1334 (CMPD x (MOVDconst [0])) -> (CMPD0 x) 1335 1336 // bit extraction 1337 (SRAconst (SLLconst x [c]) [d]) && objabi.GOARM==7 && uint64(d)>=uint64(c) && uint64(d)<=31 -> (BFX [(d-c)|(32-d)<<8] x) 1338 (SRLconst (SLLconst x [c]) [d]) && objabi.GOARM==7 && uint64(d)>=uint64(c) && uint64(d)<=31 -> (BFXU [(d-c)|(32-d)<<8] x) 1339 1340 // comparison simplification 1341 (CMP x (RSBconst [0] y)) -> (CMN x y) 1342 (CMN x (RSBconst [0] y)) -> (CMP x y) 1343 (EQ (CMPconst [0] l:(SUB x y)) yes no) && l.Uses==1 -> (EQ (CMP x y) yes no) 1344 (EQ (CMPconst [0] l:(MULS x y a)) yes no) && l.Uses==1 -> (EQ (CMP a (MUL <x.Type> x y)) yes no) 1345 (EQ (CMPconst [0] l:(SUBconst [c] x)) yes no) && l.Uses==1 -> (EQ (CMPconst [c] x) yes no) 1346 (EQ (CMPconst [0] l:(SUBshiftLL x y [c])) yes no) && l.Uses==1 -> (EQ (CMPshiftLL x y [c]) yes no) 1347 (EQ (CMPconst [0] l:(SUBshiftRL x y [c])) yes no) && l.Uses==1 -> (EQ (CMPshiftRL x y [c]) yes no) 1348 (EQ (CMPconst [0] l:(SUBshiftRA x y [c])) yes no) && l.Uses==1 -> (EQ (CMPshiftRA x y [c]) yes no) 1349 (EQ (CMPconst [0] l:(SUBshiftLLreg x y z)) yes no) && l.Uses==1 -> (EQ (CMPshiftLLreg x y z) yes no) 1350 (EQ (CMPconst [0] l:(SUBshiftRLreg x y z)) yes no) && l.Uses==1 -> (EQ (CMPshiftRLreg x y z) yes no) 1351 (EQ (CMPconst [0] l:(SUBshiftRAreg x y z)) yes no) && l.Uses==1 -> (EQ (CMPshiftRAreg x y z) yes no) 1352 (NE (CMPconst [0] l:(SUB x y)) yes no) && l.Uses==1 -> (NE (CMP x y) yes no) 1353 (NE (CMPconst [0] l:(MULS x y a)) yes no) && l.Uses==1 -> (NE (CMP a (MUL <x.Type> x y)) yes no) 1354 (NE (CMPconst [0] l:(SUBconst [c] x)) yes no) && l.Uses==1 -> (NE (CMPconst [c] x) yes no) 1355 (NE (CMPconst [0] l:(SUBshiftLL x y [c])) yes no) && l.Uses==1 -> (NE (CMPshiftLL x y [c]) yes no) 1356 (NE (CMPconst [0] l:(SUBshiftRL x y [c])) yes no) && l.Uses==1 -> (NE (CMPshiftRL x y [c]) yes no) 1357 (NE (CMPconst [0] l:(SUBshiftRA x y [c])) yes no) && l.Uses==1 -> (NE (CMPshiftRA x y [c]) yes no) 1358 (NE (CMPconst [0] l:(SUBshiftLLreg x y z)) yes no) && l.Uses==1 -> (NE (CMPshiftLLreg x y z) yes no) 1359 (NE (CMPconst [0] l:(SUBshiftRLreg x y z)) yes no) && l.Uses==1 -> (NE (CMPshiftRLreg x y z) yes no) 1360 (NE (CMPconst [0] l:(SUBshiftRAreg x y z)) yes no) && l.Uses==1 -> (NE (CMPshiftRAreg x y z) yes no) 1361 (EQ (CMPconst [0] l:(ADD x y)) yes no) && l.Uses==1 -> (EQ (CMN x y) yes no) 1362 (EQ (CMPconst [0] l:(MULA x y a)) yes no) && l.Uses==1 -> (EQ (CMN a (MUL <x.Type> x y)) yes no) 1363 (EQ (CMPconst [0] l:(ADDconst [c] x)) yes no) && l.Uses==1 -> (EQ (CMNconst [c] x) yes no) 1364 (EQ (CMPconst [0] l:(ADDshiftLL x y [c])) yes no) && l.Uses==1 -> (EQ (CMNshiftLL x y [c]) yes no) 1365 (EQ (CMPconst [0] l:(ADDshiftRL x y [c])) yes no) && l.Uses==1 -> (EQ (CMNshiftRL x y [c]) yes no) 1366 (EQ (CMPconst [0] l:(ADDshiftRA x y [c])) yes no) && l.Uses==1 -> (EQ (CMNshiftRA x y [c]) yes no) 1367 (EQ (CMPconst [0] l:(ADDshiftLLreg x y z)) yes no) && l.Uses==1 -> (EQ (CMNshiftLLreg x y z) yes no) 1368 (EQ (CMPconst [0] l:(ADDshiftRLreg x y z)) yes no) && l.Uses==1 -> (EQ (CMNshiftRLreg x y z) yes no) 1369 (EQ (CMPconst [0] l:(ADDshiftRAreg x y z)) yes no) && l.Uses==1 -> (EQ (CMNshiftRAreg x y z) yes no) 1370 (NE (CMPconst [0] l:(ADD x y)) yes no) && l.Uses==1 -> (NE (CMN x y) yes no) 1371 (NE (CMPconst [0] l:(MULA x y a)) yes no) && l.Uses==1 -> (NE (CMN a (MUL <x.Type> x y)) yes no) 1372 (NE (CMPconst [0] l:(ADDconst [c] x)) yes no) && l.Uses==1 -> (NE (CMNconst [c] x) yes no) 1373 (NE (CMPconst [0] l:(ADDshiftLL x y [c])) yes no) && l.Uses==1 -> (NE (CMNshiftLL x y [c]) yes no) 1374 (NE (CMPconst [0] l:(ADDshiftRL x y [c])) yes no) && l.Uses==1 -> (NE (CMNshiftRL x y [c]) yes no) 1375 (NE (CMPconst [0] l:(ADDshiftRA x y [c])) yes no) && l.Uses==1 -> (NE (CMNshiftRA x y [c]) yes no) 1376 (NE (CMPconst [0] l:(ADDshiftLLreg x y z)) yes no) && l.Uses==1 -> (NE (CMNshiftLLreg x y z) yes no) 1377 (NE (CMPconst [0] l:(ADDshiftRLreg x y z)) yes no) && l.Uses==1 -> (NE (CMNshiftRLreg x y z) yes no) 1378 (NE (CMPconst [0] l:(ADDshiftRAreg x y z)) yes no) && l.Uses==1 -> (NE (CMNshiftRAreg x y z) yes no) 1379 (EQ (CMPconst [0] l:(AND x y)) yes no) && l.Uses==1 -> (EQ (TST x y) yes no) 1380 (EQ (CMPconst [0] l:(ANDconst [c] x)) yes no) && l.Uses==1 -> (EQ (TSTconst [c] x) yes no) 1381 (EQ (CMPconst [0] l:(ANDshiftLL x y [c])) yes no) && l.Uses==1 -> (EQ (TSTshiftLL x y [c]) yes no) 1382 (EQ (CMPconst [0] l:(ANDshiftRL x y [c])) yes no) && l.Uses==1 -> (EQ (TSTshiftRL x y [c]) yes no) 1383 (EQ (CMPconst [0] l:(ANDshiftRA x y [c])) yes no) && l.Uses==1 -> (EQ (TSTshiftRA x y [c]) yes no) 1384 (EQ (CMPconst [0] l:(ANDshiftLLreg x y z)) yes no) && l.Uses==1 -> (EQ (TSTshiftLLreg x y z) yes no) 1385 (EQ (CMPconst [0] l:(ANDshiftRLreg x y z)) yes no) && l.Uses==1 -> (EQ (TSTshiftRLreg x y z) yes no) 1386 (EQ (CMPconst [0] l:(ANDshiftRAreg x y z)) yes no) && l.Uses==1 -> (EQ (TSTshiftRAreg x y z) yes no) 1387 (NE (CMPconst [0] l:(AND x y)) yes no) && l.Uses==1 -> (NE (TST x y) yes no) 1388 (NE (CMPconst [0] l:(ANDconst [c] x)) yes no) && l.Uses==1 -> (NE (TSTconst [c] x) yes no) 1389 (NE (CMPconst [0] l:(ANDshiftLL x y [c])) yes no) && l.Uses==1 -> (NE (TSTshiftLL x y [c]) yes no) 1390 (NE (CMPconst [0] l:(ANDshiftRL x y [c])) yes no) && l.Uses==1 -> (NE (TSTshiftRL x y [c]) yes no) 1391 (NE (CMPconst [0] l:(ANDshiftRA x y [c])) yes no) && l.Uses==1 -> (NE (TSTshiftRA x y [c]) yes no) 1392 (NE (CMPconst [0] l:(ANDshiftLLreg x y z)) yes no) && l.Uses==1 -> (NE (TSTshiftLLreg x y z) yes no) 1393 (NE (CMPconst [0] l:(ANDshiftRLreg x y z)) yes no) && l.Uses==1 -> (NE (TSTshiftRLreg x y z) yes no) 1394 (NE (CMPconst [0] l:(ANDshiftRAreg x y z)) yes no) && l.Uses==1 -> (NE (TSTshiftRAreg x y z) yes no) 1395 (EQ (CMPconst [0] l:(XOR x y)) yes no) && l.Uses==1 -> (EQ (TEQ x y) yes no) 1396 (EQ (CMPconst [0] l:(XORconst [c] x)) yes no) && l.Uses==1 -> (EQ (TEQconst [c] x) yes no) 1397 (EQ (CMPconst [0] l:(XORshiftLL x y [c])) yes no) && l.Uses==1 -> (EQ (TEQshiftLL x y [c]) yes no) 1398 (EQ (CMPconst [0] l:(XORshiftRL x y [c])) yes no) && l.Uses==1 -> (EQ (TEQshiftRL x y [c]) yes no) 1399 (EQ (CMPconst [0] l:(XORshiftRA x y [c])) yes no) && l.Uses==1 -> (EQ (TEQshiftRA x y [c]) yes no) 1400 (EQ (CMPconst [0] l:(XORshiftLLreg x y z)) yes no) && l.Uses==1 -> (EQ (TEQshiftLLreg x y z) yes no) 1401 (EQ (CMPconst [0] l:(XORshiftRLreg x y z)) yes no) && l.Uses==1 -> (EQ (TEQshiftRLreg x y z) yes no) 1402 (EQ (CMPconst [0] l:(XORshiftRAreg x y z)) yes no) && l.Uses==1 -> (EQ (TEQshiftRAreg x y z) yes no) 1403 (NE (CMPconst [0] l:(XOR x y)) yes no) && l.Uses==1 -> (NE (TEQ x y) yes no) 1404 (NE (CMPconst [0] l:(XORconst [c] x)) yes no) && l.Uses==1 -> (NE (TEQconst [c] x) yes no) 1405 (NE (CMPconst [0] l:(XORshiftLL x y [c])) yes no) && l.Uses==1 -> (NE (TEQshiftLL x y [c]) yes no) 1406 (NE (CMPconst [0] l:(XORshiftRL x y [c])) yes no) && l.Uses==1 -> (NE (TEQshiftRL x y [c]) yes no) 1407 (NE (CMPconst [0] l:(XORshiftRA x y [c])) yes no) && l.Uses==1 -> (NE (TEQshiftRA x y [c]) yes no) 1408 (NE (CMPconst [0] l:(XORshiftLLreg x y z)) yes no) && l.Uses==1 -> (NE (TEQshiftLLreg x y z) yes no) 1409 (NE (CMPconst [0] l:(XORshiftRLreg x y z)) yes no) && l.Uses==1 -> (NE (TEQshiftRLreg x y z) yes no) 1410 (NE (CMPconst [0] l:(XORshiftRAreg x y z)) yes no) && l.Uses==1 -> (NE (TEQshiftRAreg x y z) yes no) 1411 (LT (CMPconst [0] l:(SUB x y)) yes no) && l.Uses==1 -> (LT (CMP x y) yes no) 1412 (LT (CMPconst [0] l:(MULS x y a)) yes no) && l.Uses==1 -> (LT (CMP a (MUL <x.Type> x y)) yes no) 1413 (LT (CMPconst [0] l:(SUBconst [c] x)) yes no) && l.Uses==1 -> (LT (CMPconst [c] x) yes no) 1414 (LT (CMPconst [0] l:(SUBshiftLL x y [c])) yes no) && l.Uses==1 -> (LT (CMPshiftLL x y [c]) yes no) 1415 (LT (CMPconst [0] l:(SUBshiftRL x y [c])) yes no) && l.Uses==1 -> (LT (CMPshiftRL x y [c]) yes no) 1416 (LT (CMPconst [0] l:(SUBshiftRA x y [c])) yes no) && l.Uses==1 -> (LT (CMPshiftRA x y [c]) yes no) 1417 (LT (CMPconst [0] l:(SUBshiftLLreg x y z)) yes no) && l.Uses==1 -> (LT (CMPshiftLLreg x y z) yes no) 1418 (LT (CMPconst [0] l:(SUBshiftRLreg x y z)) yes no) && l.Uses==1 -> (LT (CMPshiftRLreg x y z) yes no) 1419 (LT (CMPconst [0] l:(SUBshiftRAreg x y z)) yes no) && l.Uses==1 -> (LT (CMPshiftRAreg x y z) yes no) 1420 (LE (CMPconst [0] l:(SUB x y)) yes no) && l.Uses==1 -> (LE (CMP x y) yes no) 1421 (LE (CMPconst [0] l:(MULS x y a)) yes no) && l.Uses==1 -> (LE (CMP a (MUL <x.Type> x y)) yes no) 1422 (LE (CMPconst [0] l:(SUBconst [c] x)) yes no) && l.Uses==1 -> (LE (CMPconst [c] x) yes no) 1423 (LE (CMPconst [0] l:(SUBshiftLL x y [c])) yes no) && l.Uses==1 -> (LE (CMPshiftLL x y [c]) yes no) 1424 (LE (CMPconst [0] l:(SUBshiftRL x y [c])) yes no) && l.Uses==1 -> (LE (CMPshiftRL x y [c]) yes no) 1425 (LE (CMPconst [0] l:(SUBshiftRA x y [c])) yes no) && l.Uses==1 -> (LE (CMPshiftRA x y [c]) yes no) 1426 (LE (CMPconst [0] l:(SUBshiftLLreg x y z)) yes no) && l.Uses==1 -> (LE (CMPshiftLLreg x y z) yes no) 1427 (LE (CMPconst [0] l:(SUBshiftRLreg x y z)) yes no) && l.Uses==1 -> (LE (CMPshiftRLreg x y z) yes no) 1428 (LE (CMPconst [0] l:(SUBshiftRAreg x y z)) yes no) && l.Uses==1 -> (LE (CMPshiftRAreg x y z) yes no) 1429 (LT (CMPconst [0] l:(ADD x y)) yes no) && l.Uses==1 -> (LT (CMN x y) yes no) 1430 (LT (CMPconst [0] l:(MULA x y a)) yes no) && l.Uses==1 -> (LT (CMN a (MUL <x.Type> x y)) yes no) 1431 (LT (CMPconst [0] l:(ADDconst [c] x)) yes no) && l.Uses==1 -> (LT (CMNconst [c] x) yes no) 1432 (LT (CMPconst [0] l:(ADDshiftLL x y [c])) yes no) && l.Uses==1 -> (LT (CMNshiftLL x y [c]) yes no) 1433 (LT (CMPconst [0] l:(ADDshiftRL x y [c])) yes no) && l.Uses==1 -> (LT (CMNshiftRL x y [c]) yes no) 1434 (LT (CMPconst [0] l:(ADDshiftRA x y [c])) yes no) && l.Uses==1 -> (LT (CMNshiftRA x y [c]) yes no) 1435 (LT (CMPconst [0] l:(ADDshiftLLreg x y z)) yes no) && l.Uses==1 -> (LT (CMNshiftLLreg x y z) yes no) 1436 (LT (CMPconst [0] l:(ADDshiftRLreg x y z)) yes no) && l.Uses==1 -> (LT (CMNshiftRLreg x y z) yes no) 1437 (LT (CMPconst [0] l:(ADDshiftRAreg x y z)) yes no) && l.Uses==1 -> (LT (CMNshiftRAreg x y z) yes no) 1438 (LE (CMPconst [0] l:(ADD x y)) yes no) && l.Uses==1 -> (LE (CMN x y) yes no) 1439 (LE (CMPconst [0] l:(MULA x y a)) yes no) && l.Uses==1 -> (LE (CMN a (MUL <x.Type> x y)) yes no) 1440 (LE (CMPconst [0] l:(ADDconst [c] x)) yes no) && l.Uses==1 -> (LE (CMNconst [c] x) yes no) 1441 (LE (CMPconst [0] l:(ADDshiftLL x y [c])) yes no) && l.Uses==1 -> (LE (CMNshiftLL x y [c]) yes no) 1442 (LE (CMPconst [0] l:(ADDshiftRL x y [c])) yes no) && l.Uses==1 -> (LE (CMNshiftRL x y [c]) yes no) 1443 (LE (CMPconst [0] l:(ADDshiftRA x y [c])) yes no) && l.Uses==1 -> (LE (CMNshiftRA x y [c]) yes no) 1444 (LE (CMPconst [0] l:(ADDshiftLLreg x y z)) yes no) && l.Uses==1 -> (LE (CMNshiftLLreg x y z) yes no) 1445 (LE (CMPconst [0] l:(ADDshiftRLreg x y z)) yes no) && l.Uses==1 -> (LE (CMNshiftRLreg x y z) yes no) 1446 (LE (CMPconst [0] l:(ADDshiftRAreg x y z)) yes no) && l.Uses==1 -> (LE (CMNshiftRAreg x y z) yes no) 1447 (LT (CMPconst [0] l:(AND x y)) yes no) && l.Uses==1 -> (LT (TST x y) yes no) 1448 (LT (CMPconst [0] l:(ANDconst [c] x)) yes no) && l.Uses==1 -> (LT (TSTconst [c] x) yes no) 1449 (LT (CMPconst [0] l:(ANDshiftLL x y [c])) yes no) && l.Uses==1 -> (LT (TSTshiftLL x y [c]) yes no) 1450 (LT (CMPconst [0] l:(ANDshiftRL x y [c])) yes no) && l.Uses==1 -> (LT (TSTshiftRL x y [c]) yes no) 1451 (LT (CMPconst [0] l:(ANDshiftRA x y [c])) yes no) && l.Uses==1 -> (LT (TSTshiftRA x y [c]) yes no) 1452 (LT (CMPconst [0] l:(ANDshiftLLreg x y z)) yes no) && l.Uses==1 -> (LT (TSTshiftLLreg x y z) yes no) 1453 (LT (CMPconst [0] l:(ANDshiftRLreg x y z)) yes no) && l.Uses==1 -> (LT (TSTshiftRLreg x y z) yes no) 1454 (LT (CMPconst [0] l:(ANDshiftRAreg x y z)) yes no) && l.Uses==1 -> (LT (TSTshiftRAreg x y z) yes no) 1455 (LE (CMPconst [0] l:(AND x y)) yes no) && l.Uses==1 -> (LE (TST x y) yes no) 1456 (LE (CMPconst [0] l:(ANDconst [c] x)) yes no) && l.Uses==1 -> (LE (TSTconst [c] x) yes no) 1457 (LE (CMPconst [0] l:(ANDshiftLL x y [c])) yes no) && l.Uses==1 -> (LE (TSTshiftLL x y [c]) yes no) 1458 (LE (CMPconst [0] l:(ANDshiftRL x y [c])) yes no) && l.Uses==1 -> (LE (TSTshiftRL x y [c]) yes no) 1459 (LE (CMPconst [0] l:(ANDshiftRA x y [c])) yes no) && l.Uses==1 -> (LE (TSTshiftRA x y [c]) yes no) 1460 (LE (CMPconst [0] l:(ANDshiftLLreg x y z)) yes no) && l.Uses==1 -> (LE (TSTshiftLLreg x y z) yes no) 1461 (LE (CMPconst [0] l:(ANDshiftRLreg x y z)) yes no) && l.Uses==1 -> (LE (TSTshiftRLreg x y z) yes no) 1462 (LE (CMPconst [0] l:(ANDshiftRAreg x y z)) yes no) && l.Uses==1 -> (LE (TSTshiftRAreg x y z) yes no) 1463 (LT (CMPconst [0] l:(XOR x y)) yes no) && l.Uses==1 -> (LT (TEQ x y) yes no) 1464 (LT (CMPconst [0] l:(XORconst [c] x)) yes no) && l.Uses==1 -> (LT (TEQconst [c] x) yes no) 1465 (LT (CMPconst [0] l:(XORshiftLL x y [c])) yes no) && l.Uses==1 -> (LT (TEQshiftLL x y [c]) yes no) 1466 (LT (CMPconst [0] l:(XORshiftRL x y [c])) yes no) && l.Uses==1 -> (LT (TEQshiftRL x y [c]) yes no) 1467 (LT (CMPconst [0] l:(XORshiftRA x y [c])) yes no) && l.Uses==1 -> (LT (TEQshiftRA x y [c]) yes no) 1468 (LT (CMPconst [0] l:(XORshiftLLreg x y z)) yes no) && l.Uses==1 -> (LT (TEQshiftLLreg x y z) yes no) 1469 (LT (CMPconst [0] l:(XORshiftRLreg x y z)) yes no) && l.Uses==1 -> (LT (TEQshiftRLreg x y z) yes no) 1470 (LT (CMPconst [0] l:(XORshiftRAreg x y z)) yes no) && l.Uses==1 -> (LT (TEQshiftRAreg x y z) yes no) 1471 (LE (CMPconst [0] l:(XOR x y)) yes no) && l.Uses==1 -> (LE (TEQ x y) yes no) 1472 (LE (CMPconst [0] l:(XORconst [c] x)) yes no) && l.Uses==1 -> (LE (TEQconst [c] x) yes no) 1473 (LE (CMPconst [0] l:(XORshiftLL x y [c])) yes no) && l.Uses==1 -> (LE (TEQshiftLL x y [c]) yes no) 1474 (LE (CMPconst [0] l:(XORshiftRL x y [c])) yes no) && l.Uses==1 -> (LE (TEQshiftRL x y [c]) yes no) 1475 (LE (CMPconst [0] l:(XORshiftRA x y [c])) yes no) && l.Uses==1 -> (LE (TEQshiftRA x y [c]) yes no) 1476 (LE (CMPconst [0] l:(XORshiftLLreg x y z)) yes no) && l.Uses==1 -> (LE (TEQshiftLLreg x y z) yes no) 1477 (LE (CMPconst [0] l:(XORshiftRLreg x y z)) yes no) && l.Uses==1 -> (LE (TEQshiftRLreg x y z) yes no) 1478 (LE (CMPconst [0] l:(XORshiftRAreg x y z)) yes no) && l.Uses==1 -> (LE (TEQshiftRAreg x y z) yes no) 1479 (GT (CMPconst [0] l:(SUB x y)) yes no) && l.Uses==1 -> (GT (CMP x y) yes no) 1480 (GT (CMPconst [0] l:(MULS x y a)) yes no) && l.Uses==1 -> (GT (CMP a (MUL <x.Type> x y)) yes no) 1481 (GT (CMPconst [0] l:(SUBconst [c] x)) yes no) && l.Uses==1 -> (GT (CMPconst [c] x) yes no) 1482 (GT (CMPconst [0] l:(SUBshiftLL x y [c])) yes no) && l.Uses==1 -> (GT (CMPshiftLL x y [c]) yes no) 1483 (GT (CMPconst [0] l:(SUBshiftRL x y [c])) yes no) && l.Uses==1 -> (GT (CMPshiftRL x y [c]) yes no) 1484 (GT (CMPconst [0] l:(SUBshiftRA x y [c])) yes no) && l.Uses==1 -> (GT (CMPshiftRA x y [c]) yes no) 1485 (GT (CMPconst [0] l:(SUBshiftLLreg x y z)) yes no) && l.Uses==1 -> (GT (CMPshiftLLreg x y z) yes no) 1486 (GT (CMPconst [0] l:(SUBshiftRLreg x y z)) yes no) && l.Uses==1 -> (GT (CMPshiftRLreg x y z) yes no) 1487 (GT (CMPconst [0] l:(SUBshiftRAreg x y z)) yes no) && l.Uses==1 -> (GT (CMPshiftRAreg x y z) yes no) 1488 (GE (CMPconst [0] l:(SUB x y)) yes no) && l.Uses==1 -> (GE (CMP x y) yes no) 1489 (GE (CMPconst [0] l:(MULS x y a)) yes no) && l.Uses==1 -> (GE (CMP a (MUL <x.Type> x y)) yes no) 1490 (GE (CMPconst [0] l:(SUBconst [c] x)) yes no) && l.Uses==1 -> (GE (CMPconst [c] x) yes no) 1491 (GE (CMPconst [0] l:(SUBshiftLL x y [c])) yes no) && l.Uses==1 -> (GE (CMPshiftLL x y [c]) yes no) 1492 (GE (CMPconst [0] l:(SUBshiftRL x y [c])) yes no) && l.Uses==1 -> (GE (CMPshiftRL x y [c]) yes no) 1493 (GE (CMPconst [0] l:(SUBshiftRA x y [c])) yes no) && l.Uses==1 -> (GE (CMPshiftRA x y [c]) yes no) 1494 (GE (CMPconst [0] l:(SUBshiftLLreg x y z)) yes no) && l.Uses==1 -> (GE (CMPshiftLLreg x y z) yes no) 1495 (GE (CMPconst [0] l:(SUBshiftRLreg x y z)) yes no) && l.Uses==1 -> (GE (CMPshiftRLreg x y z) yes no) 1496 (GE (CMPconst [0] l:(SUBshiftRAreg x y z)) yes no) && l.Uses==1 -> (GE (CMPshiftRAreg x y z) yes no) 1497 (GT (CMPconst [0] l:(ADD x y)) yes no) && l.Uses==1 -> (GT (CMN x y) yes no) 1498 (GT (CMPconst [0] l:(ADDconst [c] x)) yes no) && l.Uses==1 -> (GT (CMNconst [c] x) yes no) 1499 (GT (CMPconst [0] l:(ADDshiftLL x y [c])) yes no) && l.Uses==1 -> (GT (CMNshiftLL x y [c]) yes no) 1500 (GT (CMPconst [0] l:(ADDshiftRL x y [c])) yes no) && l.Uses==1 -> (GT (CMNshiftRL x y [c]) yes no) 1501 (GT (CMPconst [0] l:(ADDshiftRA x y [c])) yes no) && l.Uses==1 -> (GT (CMNshiftRA x y [c]) yes no) 1502 (GT (CMPconst [0] l:(ADDshiftLLreg x y z)) yes no) && l.Uses==1 -> (GT (CMNshiftLLreg x y z) yes no) 1503 (GT (CMPconst [0] l:(ADDshiftRLreg x y z)) yes no) && l.Uses==1 -> (GT (CMNshiftRLreg x y z) yes no) 1504 (GT (CMPconst [0] l:(ADDshiftRAreg x y z)) yes no) && l.Uses==1 -> (GT (CMNshiftRAreg x y z) yes no) 1505 (GE (CMPconst [0] l:(ADD x y)) yes no) && l.Uses==1 -> (GE (CMN x y) yes no) 1506 (GE (CMPconst [0] l:(MULA x y a)) yes no) && l.Uses==1 -> (GE (CMN a (MUL <x.Type> x y)) yes no) 1507 (GE (CMPconst [0] l:(ADDconst [c] x)) yes no) && l.Uses==1 -> (GE (CMNconst [c] x) yes no) 1508 (GE (CMPconst [0] l:(ADDshiftLL x y [c])) yes no) && l.Uses==1 -> (GE (CMNshiftLL x y [c]) yes no) 1509 (GE (CMPconst [0] l:(ADDshiftRL x y [c])) yes no) && l.Uses==1 -> (GE (CMNshiftRL x y [c]) yes no) 1510 (GE (CMPconst [0] l:(ADDshiftRA x y [c])) yes no) && l.Uses==1 -> (GE (CMNshiftRA x y [c]) yes no) 1511 (GE (CMPconst [0] l:(ADDshiftLLreg x y z)) yes no) && l.Uses==1 -> (GE (CMNshiftLLreg x y z) yes no) 1512 (GE (CMPconst [0] l:(ADDshiftRLreg x y z)) yes no) && l.Uses==1 -> (GE (CMNshiftRLreg x y z) yes no) 1513 (GE (CMPconst [0] l:(ADDshiftRAreg x y z)) yes no) && l.Uses==1 -> (GE (CMNshiftRAreg x y z) yes no) 1514 (GT (CMPconst [0] l:(AND x y)) yes no) && l.Uses==1 -> (GT (TST x y) yes no) 1515 (GT (CMPconst [0] l:(MULA x y a)) yes no) && l.Uses==1 -> (GT (CMN a (MUL <x.Type> x y)) yes no) 1516 (GT (CMPconst [0] l:(ANDconst [c] x)) yes no) && l.Uses==1 -> (GT (TSTconst [c] x) yes no) 1517 (GT (CMPconst [0] l:(ANDshiftLL x y [c])) yes no) && l.Uses==1 -> (GT (TSTshiftLL x y [c]) yes no) 1518 (GT (CMPconst [0] l:(ANDshiftRL x y [c])) yes no) && l.Uses==1 -> (GT (TSTshiftRL x y [c]) yes no) 1519 (GT (CMPconst [0] l:(ANDshiftRA x y [c])) yes no) && l.Uses==1 -> (GT (TSTshiftRA x y [c]) yes no) 1520 (GT (CMPconst [0] l:(ANDshiftLLreg x y z)) yes no) && l.Uses==1 -> (GT (TSTshiftLLreg x y z) yes no) 1521 (GT (CMPconst [0] l:(ANDshiftRLreg x y z)) yes no) && l.Uses==1 -> (GT (TSTshiftRLreg x y z) yes no) 1522 (GT (CMPconst [0] l:(ANDshiftRAreg x y z)) yes no) && l.Uses==1 -> (GT (TSTshiftRAreg x y z) yes no) 1523 (GE (CMPconst [0] l:(AND x y)) yes no) && l.Uses==1 -> (GE (TST x y) yes no) 1524 (GE (CMPconst [0] l:(ANDconst [c] x)) yes no) && l.Uses==1 -> (GE (TSTconst [c] x) yes no) 1525 (GE (CMPconst [0] l:(ANDshiftLL x y [c])) yes no) && l.Uses==1 -> (GE (TSTshiftLL x y [c]) yes no) 1526 (GE (CMPconst [0] l:(ANDshiftRL x y [c])) yes no) && l.Uses==1 -> (GE (TSTshiftRL x y [c]) yes no) 1527 (GE (CMPconst [0] l:(ANDshiftRA x y [c])) yes no) && l.Uses==1 -> (GE (TSTshiftRA x y [c]) yes no) 1528 (GE (CMPconst [0] l:(ANDshiftLLreg x y z)) yes no) && l.Uses==1 -> (GE (TSTshiftLLreg x y z) yes no) 1529 (GE (CMPconst [0] l:(ANDshiftRLreg x y z)) yes no) && l.Uses==1 -> (GE (TSTshiftRLreg x y z) yes no) 1530 (GE (CMPconst [0] l:(ANDshiftRAreg x y z)) yes no) && l.Uses==1 -> (GE (TSTshiftRAreg x y z) yes no) 1531 (GT (CMPconst [0] l:(XOR x y)) yes no) && l.Uses==1 -> (GT (TEQ x y) yes no) 1532 (GT (CMPconst [0] l:(XORconst [c] x)) yes no) && l.Uses==1 -> (GT (TEQconst [c] x) yes no) 1533 (GT (CMPconst [0] l:(XORshiftLL x y [c])) yes no) && l.Uses==1 -> (GT (TEQshiftLL x y [c]) yes no) 1534 (GT (CMPconst [0] l:(XORshiftRL x y [c])) yes no) && l.Uses==1 -> (GT (TEQshiftRL x y [c]) yes no) 1535 (GT (CMPconst [0] l:(XORshiftRA x y [c])) yes no) && l.Uses==1 -> (GT (TEQshiftRA x y [c]) yes no) 1536 (GT (CMPconst [0] l:(XORshiftLLreg x y z)) yes no) && l.Uses==1 -> (GT (TEQshiftLLreg x y z) yes no) 1537 (GT (CMPconst [0] l:(XORshiftRLreg x y z)) yes no) && l.Uses==1 -> (GT (TEQshiftRLreg x y z) yes no) 1538 (GT (CMPconst [0] l:(XORshiftRAreg x y z)) yes no) && l.Uses==1 -> (GT (TEQshiftRAreg x y z) yes no) 1539 (GE (CMPconst [0] l:(XOR x y)) yes no) && l.Uses==1 -> (GE (TEQ x y) yes no) 1540 (GE (CMPconst [0] l:(XORconst [c] x)) yes no) && l.Uses==1 -> (GE (TEQconst [c] x) yes no) 1541 (GE (CMPconst [0] l:(XORshiftLL x y [c])) yes no) && l.Uses==1 -> (GE (TEQshiftLL x y [c]) yes no) 1542 (GE (CMPconst [0] l:(XORshiftRL x y [c])) yes no) && l.Uses==1 -> (GE (TEQshiftRL x y [c]) yes no) 1543 (GE (CMPconst [0] l:(XORshiftRA x y [c])) yes no) && l.Uses==1 -> (GE (TEQshiftRA x y [c]) yes no) 1544 (GE (CMPconst [0] l:(XORshiftLLreg x y z)) yes no) && l.Uses==1 -> (GE (TEQshiftLLreg x y z) yes no) 1545 (GE (CMPconst [0] l:(XORshiftRLreg x y z)) yes no) && l.Uses==1 -> (GE (TEQshiftRLreg x y z) yes no) 1546 (GE (CMPconst [0] l:(XORshiftRAreg x y z)) yes no) && l.Uses==1 -> (GE (TEQshiftRAreg x y z) yes no) 1547 1548 (MOVBUload [off] {sym} (SB) _) && symIsRO(sym) -> (MOVWconst [int64(read8(sym, off))]) 1549 (MOVHUload [off] {sym} (SB) _) && symIsRO(sym) -> (MOVWconst [int64(read16(sym, off, config.BigEndian))]) 1550 (MOVWload [off] {sym} (SB) _) && symIsRO(sym) -> (MOVWconst [int64(int32(read32(sym, off, config.BigEndian)))])