| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Lowering arithmetic |
| (Add(Ptr|64|32|16|8) x y) -> (ADD x y) |
| (Add64F x y) -> (FADD x y) |
| (Add32F x y) -> (FADDS x y) |
| |
| (Sub(Ptr|64|32|16|8) x y) -> (SUB x y) |
| (Sub32F x y) -> (FSUBS x y) |
| (Sub64F x y) -> (FSUB x y) |
| |
| (Mod16 x y) -> (Mod32 (SignExt16to32 x) (SignExt16to32 y)) |
| (Mod16u x y) -> (Mod32u (ZeroExt16to32 x) (ZeroExt16to32 y)) |
| (Mod8 x y) -> (Mod32 (SignExt8to32 x) (SignExt8to32 y)) |
| (Mod8u x y) -> (Mod32u (ZeroExt8to32 x) (ZeroExt8to32 y)) |
| (Mod64 x y) -> (SUB x (MULLD y (DIVD x y))) |
| (Mod64u x y) -> (SUB x (MULLD y (DIVDU x y))) |
| (Mod32 x y) -> (SUB x (MULLW y (DIVW x y))) |
| (Mod32u x y) -> (SUB x (MULLW y (DIVWU x y))) |
| |
| // (x + y) / 2 with x>=y -> (x - y) / 2 + y |
| (Avg64u <t> x y) -> (ADD (SRDconst <t> (SUB <t> x y) [1]) y) |
| |
| (Mul64 x y) -> (MULLD x y) |
| (Mul(32|16|8) x y) -> (MULLW x y) |
| (Mul64uhilo x y) -> (LoweredMuluhilo x y) |
| |
| (Div64 x y) -> (DIVD x y) |
| (Div64u x y) -> (DIVDU x y) |
| (Div32 x y) -> (DIVW x y) |
| (Div32u x y) -> (DIVWU x y) |
| (Div16 x y) -> (DIVW (SignExt16to32 x) (SignExt16to32 y)) |
| (Div16u x y) -> (DIVWU (ZeroExt16to32 x) (ZeroExt16to32 y)) |
| (Div8 x y) -> (DIVW (SignExt8to32 x) (SignExt8to32 y)) |
| (Div8u x y) -> (DIVWU (ZeroExt8to32 x) (ZeroExt8to32 y)) |
| |
| (Hmul(64|64u|32|32u) x y) -> (MULH(D|DU|W|WU) x y) |
| |
| (Mul32F x y) -> (FMULS x y) |
| (Mul64F x y) -> (FMUL x y) |
| |
| (Div32F x y) -> (FDIVS x y) |
| (Div64F x y) -> (FDIV x y) |
| |
| // Lowering float <-> int |
| (Cvt32to32F x) -> (FCFIDS (MTVSRD (SignExt32to64 x))) |
| (Cvt32to64F x) -> (FCFID (MTVSRD (SignExt32to64 x))) |
| (Cvt64to32F x) -> (FCFIDS (MTVSRD x)) |
| (Cvt64to64F x) -> (FCFID (MTVSRD x)) |
| |
| (Cvt32Fto32 x) -> (MFVSRD (FCTIWZ x)) |
| (Cvt32Fto64 x) -> (MFVSRD (FCTIDZ x)) |
| (Cvt64Fto32 x) -> (MFVSRD (FCTIWZ x)) |
| (Cvt64Fto64 x) -> (MFVSRD (FCTIDZ x)) |
| |
| (Cvt32Fto64F x) -> x // Note x will have the wrong type for patterns dependent on Float32/Float64 |
| (Cvt64Fto32F x) -> (FRSP x) |
| |
| (Round(32|64)F x) -> (LoweredRound(32|64)F x) |
| |
| (Sqrt x) -> (FSQRT x) |
| (Floor x) -> (FFLOOR x) |
| (Ceil x) -> (FCEIL x) |
| (Trunc x) -> (FTRUNC x) |
| (Round x) -> (FROUND x) |
| (Copysign x y) -> (FCPSGN y x) |
| (Abs x) -> (FABS x) |
| |
| // Lowering constants |
| (Const(64|32|16|8) [val]) -> (MOVDconst [val]) |
| (Const(32|64)F [val]) -> (FMOV(S|D)const [val]) |
| (ConstNil) -> (MOVDconst [0]) |
| (ConstBool [b]) -> (MOVDconst [b]) |
| |
| // Constant folding |
| (FABS (FMOVDconst [x])) -> (FMOVDconst [auxFrom64F(math.Abs(auxTo64F(x)))]) |
| (FSQRT (FMOVDconst [x])) -> (FMOVDconst [auxFrom64F(math.Sqrt(auxTo64F(x)))]) |
| (FFLOOR (FMOVDconst [x])) -> (FMOVDconst [auxFrom64F(math.Floor(auxTo64F(x)))]) |
| (FCEIL (FMOVDconst [x])) -> (FMOVDconst [auxFrom64F(math.Ceil(auxTo64F(x)))]) |
| (FTRUNC (FMOVDconst [x])) -> (FMOVDconst [auxFrom64F(math.Trunc(auxTo64F(x)))]) |
| |
| // Rotate generation with const shift |
| (ADD (SLDconst x [c]) (SRDconst x [d])) && d == 64-c -> (ROTLconst [c] x) |
| ( OR (SLDconst x [c]) (SRDconst x [d])) && d == 64-c -> (ROTLconst [c] x) |
| (XOR (SLDconst x [c]) (SRDconst x [d])) && d == 64-c -> (ROTLconst [c] x) |
| |
| (ADD (SLWconst x [c]) (SRWconst x [d])) && d == 32-c -> (ROTLWconst [c] x) |
| ( OR (SLWconst x [c]) (SRWconst x [d])) && d == 32-c -> (ROTLWconst [c] x) |
| (XOR (SLWconst x [c]) (SRWconst x [d])) && d == 32-c -> (ROTLWconst [c] x) |
| |
| // Rotate generation with non-const shift |
| // these match patterns from math/bits/RotateLeft[32|64], but there could be others |
| (ADD (SLD x (ANDconst <typ.Int64> [63] y)) (SRD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y)))) -> (ROTL x y) |
| ( OR (SLD x (ANDconst <typ.Int64> [63] y)) (SRD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y)))) -> (ROTL x y) |
| (XOR (SLD x (ANDconst <typ.Int64> [63] y)) (SRD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y)))) -> (ROTL x y) |
| |
| (ADD (SLW x (ANDconst <typ.Int32> [31] y)) (SRW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y)))) -> (ROTLW x y) |
| ( OR (SLW x (ANDconst <typ.Int32> [31] y)) (SRW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y)))) -> (ROTLW x y) |
| (XOR (SLW x (ANDconst <typ.Int32> [31] y)) (SRW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y)))) -> (ROTLW x y) |
| |
| (Lsh64x64 x (Const64 [c])) && uint64(c) < 64 -> (SLDconst x [c]) |
| (Rsh64x64 x (Const64 [c])) && uint64(c) < 64 -> (SRADconst x [c]) |
| (Rsh64Ux64 x (Const64 [c])) && uint64(c) < 64 -> (SRDconst x [c]) |
| (Lsh32x64 x (Const64 [c])) && uint64(c) < 32 -> (SLWconst x [c]) |
| (Rsh32x64 x (Const64 [c])) && uint64(c) < 32 -> (SRAWconst x [c]) |
| (Rsh32Ux64 x (Const64 [c])) && uint64(c) < 32 -> (SRWconst x [c]) |
| (Lsh16x64 x (Const64 [c])) && uint64(c) < 16 -> (SLWconst x [c]) |
| (Rsh16x64 x (Const64 [c])) && uint64(c) < 16 -> (SRAWconst (SignExt16to32 x) [c]) |
| (Rsh16Ux64 x (Const64 [c])) && uint64(c) < 16 -> (SRWconst (ZeroExt16to32 x) [c]) |
| (Lsh8x64 x (Const64 [c])) && uint64(c) < 8 -> (SLWconst x [c]) |
| (Rsh8x64 x (Const64 [c])) && uint64(c) < 8 -> (SRAWconst (SignExt8to32 x) [c]) |
| (Rsh8Ux64 x (Const64 [c])) && uint64(c) < 8 -> (SRWconst (ZeroExt8to32 x) [c]) |
| |
| (Lsh64x32 x (Const64 [c])) && uint32(c) < 64 -> (SLDconst x [c]) |
| (Rsh64x32 x (Const64 [c])) && uint32(c) < 64 -> (SRADconst x [c]) |
| (Rsh64Ux32 x (Const64 [c])) && uint32(c) < 64 -> (SRDconst x [c]) |
| (Lsh32x32 x (Const64 [c])) && uint32(c) < 32 -> (SLWconst x [c]) |
| (Rsh32x32 x (Const64 [c])) && uint32(c) < 32 -> (SRAWconst x [c]) |
| (Rsh32Ux32 x (Const64 [c])) && uint32(c) < 32 -> (SRWconst x [c]) |
| (Lsh16x32 x (Const64 [c])) && uint32(c) < 16 -> (SLWconst x [c]) |
| (Rsh16x32 x (Const64 [c])) && uint32(c) < 16 -> (SRAWconst (SignExt16to32 x) [c]) |
| (Rsh16Ux32 x (Const64 [c])) && uint32(c) < 16 -> (SRWconst (ZeroExt16to32 x) [c]) |
| (Lsh8x32 x (Const64 [c])) && uint32(c) < 8 -> (SLWconst x [c]) |
| (Rsh8x32 x (Const64 [c])) && uint32(c) < 8 -> (SRAWconst (SignExt8to32 x) [c]) |
| (Rsh8Ux32 x (Const64 [c])) && uint32(c) < 8 -> (SRWconst (ZeroExt8to32 x) [c]) |
| |
| // large constant shifts |
| (Lsh64x64 _ (Const64 [c])) && uint64(c) >= 64 -> (MOVDconst [0]) |
| (Rsh64Ux64 _ (Const64 [c])) && uint64(c) >= 64 -> (MOVDconst [0]) |
| (Lsh32x64 _ (Const64 [c])) && uint64(c) >= 32 -> (MOVDconst [0]) |
| (Rsh32Ux64 _ (Const64 [c])) && uint64(c) >= 32 -> (MOVDconst [0]) |
| (Lsh16x64 _ (Const64 [c])) && uint64(c) >= 16 -> (MOVDconst [0]) |
| (Rsh16Ux64 _ (Const64 [c])) && uint64(c) >= 16 -> (MOVDconst [0]) |
| (Lsh8x64 _ (Const64 [c])) && uint64(c) >= 8 -> (MOVDconst [0]) |
| (Rsh8Ux64 _ (Const64 [c])) && uint64(c) >= 8 -> (MOVDconst [0]) |
| |
| // large constant signed right shift, we leave the sign bit |
| (Rsh64x64 x (Const64 [c])) && uint64(c) >= 64 -> (SRADconst x [63]) |
| (Rsh32x64 x (Const64 [c])) && uint64(c) >= 32 -> (SRAWconst x [63]) |
| (Rsh16x64 x (Const64 [c])) && uint64(c) >= 16 -> (SRAWconst (SignExt16to32 x) [63]) |
| (Rsh8x64 x (Const64 [c])) && uint64(c) >= 8 -> (SRAWconst (SignExt8to32 x) [63]) |
| |
| // constant shifts |
| (Lsh64x64 x (MOVDconst [c])) && uint64(c) < 64 -> (SLDconst x [c]) |
| (Rsh64x64 x (MOVDconst [c])) && uint64(c) < 64 -> (SRADconst x [c]) |
| (Rsh64Ux64 x (MOVDconst [c])) && uint64(c) < 64 -> (SRDconst x [c]) |
| (Lsh32x64 x (MOVDconst [c])) && uint64(c) < 32 -> (SLWconst x [c]) |
| (Rsh32x64 x (MOVDconst [c])) && uint64(c) < 32 -> (SRAWconst x [c]) |
| (Rsh32Ux64 x (MOVDconst [c])) && uint64(c) < 32 -> (SRWconst x [c]) |
| (Lsh16x64 x (MOVDconst [c])) && uint64(c) < 16 -> (SLWconst x [c]) |
| (Rsh16x64 x (MOVDconst [c])) && uint64(c) < 16 -> (SRAWconst (SignExt16to32 x) [c]) |
| (Rsh16Ux64 x (MOVDconst [c])) && uint64(c) < 16 -> (SRWconst (ZeroExt16to32 x) [c]) |
| (Lsh8x64 x (MOVDconst [c])) && uint64(c) < 8 -> (SLWconst x [c]) |
| (Rsh8x64 x (MOVDconst [c])) && uint64(c) < 8 -> (SRAWconst (SignExt8to32 x) [c]) |
| (Rsh8Ux64 x (MOVDconst [c])) && uint64(c) < 8 -> (SRWconst (ZeroExt8to32 x) [c]) |
| |
| (Lsh64x32 x (MOVDconst [c])) && uint32(c) < 64 -> (SLDconst x [c]) |
| (Rsh64x32 x (MOVDconst [c])) && uint32(c) < 64 -> (SRADconst x [c]) |
| (Rsh64Ux32 x (MOVDconst [c])) && uint32(c) < 64 -> (SRDconst x [c]) |
| (Lsh32x32 x (MOVDconst [c])) && uint32(c) < 32 -> (SLWconst x [c]) |
| (Rsh32x32 x (MOVDconst [c])) && uint32(c) < 32 -> (SRAWconst x [c]) |
| (Rsh32Ux32 x (MOVDconst [c])) && uint32(c) < 32 -> (SRWconst x [c]) |
| (Lsh16x32 x (MOVDconst [c])) && uint32(c) < 16 -> (SLWconst x [c]) |
| (Rsh16x32 x (MOVDconst [c])) && uint32(c) < 16 -> (SRAWconst (SignExt16to32 x) [c]) |
| (Rsh16Ux32 x (MOVDconst [c])) && uint32(c) < 16 -> (SRWconst (ZeroExt16to32 x) [c]) |
| (Lsh8x32 x (MOVDconst [c])) && uint32(c) < 8 -> (SLWconst x [c]) |
| (Rsh8x32 x (MOVDconst [c])) && uint32(c) < 8 -> (SRAWconst (SignExt8to32 x) [c]) |
| (Rsh8Ux32 x (MOVDconst [c])) && uint32(c) < 8 -> (SRWconst (ZeroExt8to32 x) [c]) |
| |
| // Lower bounded shifts first. No need to check shift value. |
| (Lsh64x(64|32|16|8) x y) && shiftIsBounded(v) -> (SLD x y) |
| (Lsh32x(64|32|16|8) x y) && shiftIsBounded(v) -> (SLW x y) |
| (Lsh16x(64|32|16|8) x y) && shiftIsBounded(v) -> (SLW x y) |
| (Lsh8x(64|32|16|8) x y) && shiftIsBounded(v) -> (SLW x y) |
| (Rsh64Ux(64|32|16|8) x y) && shiftIsBounded(v) -> (SRD x y) |
| (Rsh32Ux(64|32|16|8) x y) && shiftIsBounded(v) -> (SRW x y) |
| (Rsh16Ux(64|32|16|8) x y) && shiftIsBounded(v) -> (SRW (MOVHZreg x) y) |
| (Rsh8Ux(64|32|16|8) x y) && shiftIsBounded(v) -> (SRW (MOVBZreg x) y) |
| (Rsh64x(64|32|16|8) x y) && shiftIsBounded(v) -> (SRAD x y) |
| (Rsh32x(64|32|16|8) x y) && shiftIsBounded(v) -> (SRAW x y) |
| (Rsh16x(64|32|16|8) x y) && shiftIsBounded(v) -> (SRAW (MOVHreg x) y) |
| (Rsh8x(64|32|16|8) x y) && shiftIsBounded(v) -> (SRAW (MOVBreg x) y) |
| |
| // non-constant rotates |
| // These are subexpressions found in statements that can become rotates |
| // In these cases the shift count is known to be < 64 so the more complicated expressions |
| // with Mask & Carry is not needed |
| (Lsh64x64 x (AND y (MOVDconst [63]))) -> (SLD x (ANDconst <typ.Int64> [63] y)) |
| (Lsh64x64 x (ANDconst <typ.Int64> [63] y)) -> (SLD x (ANDconst <typ.Int64> [63] y)) |
| (Rsh64Ux64 x (AND y (MOVDconst [63]))) -> (SRD x (ANDconst <typ.Int64> [63] y)) |
| (Rsh64Ux64 x (ANDconst <typ.UInt> [63] y)) -> (SRD x (ANDconst <typ.UInt> [63] y)) |
| (Rsh64Ux64 x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y))) -> (SRD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y))) |
| (Rsh64Ux64 x (SUB <typ.UInt> (MOVDconst [64]) (AND <typ.UInt> y (MOVDconst [63])))) -> (SRD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y))) |
| (Rsh64x64 x (AND y (MOVDconst [63]))) -> (SRAD x (ANDconst <typ.Int64> [63] y)) |
| (Rsh64x64 x (ANDconst <typ.UInt> [63] y)) -> (SRAD x (ANDconst <typ.UInt> [63] y)) |
| (Rsh64x64 x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y))) -> (SRAD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y))) |
| (Rsh64x64 x (SUB <typ.UInt> (MOVDconst [64]) (AND <typ.UInt> y (MOVDconst [63])))) -> (SRAD x (SUB <typ.UInt> (MOVDconst [64]) (ANDconst <typ.UInt> [63] y))) |
| |
| (Rsh64x64 x y) -> (SRAD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] y)))) |
| (Rsh64Ux64 x y) -> (SRD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] y)))) |
| (Lsh64x64 x y) -> (SLD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] y)))) |
| |
| (Lsh32x64 x (AND y (MOVDconst [31]))) -> (SLW x (ANDconst <typ.Int32> [31] y)) |
| (Lsh32x64 x (ANDconst <typ.Int32> [31] y)) -> (SLW x (ANDconst <typ.Int32> [31] y)) |
| |
| (Rsh32Ux64 x (AND y (MOVDconst [31]))) -> (SRW x (ANDconst <typ.Int32> [31] y)) |
| (Rsh32Ux64 x (ANDconst <typ.UInt> [31] y)) -> (SRW x (ANDconst <typ.UInt> [31] y)) |
| (Rsh32Ux64 x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y))) -> (SRW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y))) |
| (Rsh32Ux64 x (SUB <typ.UInt> (MOVDconst [32]) (AND <typ.UInt> y (MOVDconst [31])))) -> (SRW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y))) |
| |
| (Rsh32x64 x (AND y (MOVDconst [31]))) -> (SRAW x (ANDconst <typ.Int32> [31] y)) |
| (Rsh32x64 x (ANDconst <typ.UInt> [31] y)) -> (SRAW x (ANDconst <typ.UInt> [31] y)) |
| (Rsh32x64 x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y))) -> (SRAW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y))) |
| (Rsh32x64 x (SUB <typ.UInt> (MOVDconst [32]) (AND <typ.UInt> y (MOVDconst [31])))) -> (SRAW x (SUB <typ.UInt> (MOVDconst [32]) (ANDconst <typ.UInt> [31] y))) |
| |
| (Rsh32x64 x y) -> (SRAW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] y)))) |
| (Rsh32Ux64 x y) -> (SRW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] y)))) |
| (Lsh32x64 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] y)))) |
| |
| (Rsh16x64 x y) -> (SRAW (SignExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] y)))) |
| (Rsh16Ux64 x y) -> (SRW (ZeroExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] y)))) |
| (Lsh16x64 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] y)))) |
| |
| (Rsh8x64 x y) -> (SRAW (SignExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] y)))) |
| (Rsh8Ux64 x y) -> (SRW (ZeroExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] y)))) |
| (Lsh8x64 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] y)))) |
| |
| (Rsh64x32 x y) -> (SRAD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt32to64 y))))) |
| (Rsh64Ux32 x y) -> (SRD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt32to64 y))))) |
| (Lsh64x32 x y) -> (SLD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt32to64 y))))) |
| |
| (Rsh32x32 x y) -> (SRAW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt32to64 y))))) |
| (Rsh32Ux32 x y) -> (SRW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt32to64 y))))) |
| (Lsh32x32 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt32to64 y))))) |
| |
| (Rsh16x32 x y) -> (SRAW (SignExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt32to64 y))))) |
| (Rsh16Ux32 x y) -> (SRW (ZeroExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt32to64 y))))) |
| (Lsh16x32 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt32to64 y))))) |
| |
| (Rsh8x32 x y) -> (SRAW (SignExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt32to64 y))))) |
| (Rsh8Ux32 x y) -> (SRW (ZeroExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt32to64 y))))) |
| (Lsh8x32 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt32to64 y))))) |
| |
| |
| (Rsh64x16 x y) -> (SRAD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt16to64 y))))) |
| (Rsh64Ux16 x y) -> (SRD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt16to64 y))))) |
| (Lsh64x16 x y) -> (SLD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt16to64 y))))) |
| |
| (Rsh32x16 x y) -> (SRAW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt16to64 y))))) |
| (Rsh32Ux16 x y) -> (SRW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt16to64 y))))) |
| (Lsh32x16 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt16to64 y))))) |
| |
| (Rsh16x16 x y) -> (SRAW (SignExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt16to64 y))))) |
| (Rsh16Ux16 x y) -> (SRW (ZeroExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt16to64 y))))) |
| (Lsh16x16 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt16to64 y))))) |
| |
| (Rsh8x16 x y) -> (SRAW (SignExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt16to64 y))))) |
| (Rsh8Ux16 x y) -> (SRW (ZeroExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt16to64 y))))) |
| (Lsh8x16 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt16to64 y))))) |
| |
| |
| (Rsh64x8 x y) -> (SRAD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt8to64 y))))) |
| (Rsh64Ux8 x y) -> (SRD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt8to64 y))))) |
| (Lsh64x8 x y) -> (SLD x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-64] (ZeroExt8to64 y))))) |
| |
| (Rsh32x8 x y) -> (SRAW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt8to64 y))))) |
| (Rsh32Ux8 x y) -> (SRW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt8to64 y))))) |
| (Lsh32x8 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-32] (ZeroExt8to64 y))))) |
| |
| (Rsh16x8 x y) -> (SRAW (SignExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt8to64 y))))) |
| (Rsh16Ux8 x y) -> (SRW (ZeroExt16to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt8to64 y))))) |
| (Lsh16x8 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-16] (ZeroExt8to64 y))))) |
| |
| (Rsh8x8 x y) -> (SRAW (SignExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt8to64 y))))) |
| (Rsh8Ux8 x y) -> (SRW (ZeroExt8to32 x) (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt8to64 y))))) |
| (Lsh8x8 x y) -> (SLW x (ORN y <typ.Int64> (MaskIfNotCarry (ADDconstForCarry [-8] (ZeroExt8to64 y))))) |
| |
| // Cleaning up shift ops when input is masked |
| (MaskIfNotCarry (ADDconstForCarry [c] (ANDconst [d] _))) && c < 0 && d > 0 && c + d < 0 -> (MOVDconst [-1]) |
| (ORN x (MOVDconst [-1])) -> x |
| |
| // Potentially useful optimizing rewrites. |
| // (ADDconstForCarry [k] c), k < 0 && (c < 0 || k+c >= 0) -> CarrySet |
| // (ADDconstForCarry [k] c), K < 0 && (c >= 0 && k+c < 0) -> CarryClear |
| // (MaskIfNotCarry CarrySet) -> 0 |
| // (MaskIfNotCarry CarrySet) -> -1 |
| |
| (Addr {sym} base) -> (MOVDaddr {sym} base) |
| (LocalAddr {sym} base _) -> (MOVDaddr {sym} base) |
| (OffPtr [off] ptr) -> (ADD (MOVDconst <typ.Int64> [off]) ptr) |
| |
| // TODO: optimize these cases? |
| (Ctz32NonZero x) -> (Ctz32 x) |
| (Ctz64NonZero x) -> (Ctz64 x) |
| |
| (Ctz64 x) -> (POPCNTD (ANDN <typ.Int64> (ADDconst <typ.Int64> [-1] x) x)) |
| (Ctz32 x) -> (POPCNTW (MOVWZreg (ANDN <typ.Int> (ADDconst <typ.Int> [-1] x) x))) |
| (Ctz16 x) -> (POPCNTW (MOVHZreg (ANDN <typ.Int16> (ADDconst <typ.Int16> [-1] x) x))) |
| (Ctz8 x) -> (POPCNTB (MOVBZreg (ANDN <typ.UInt8> (ADDconst <typ.UInt8> [-1] x) x))) |
| |
| (BitLen64 x) -> (SUB (MOVDconst [64]) (CNTLZD <typ.Int> x)) |
| (BitLen32 x) -> (SUB (MOVDconst [32]) (CNTLZW <typ.Int> x)) |
| |
| (PopCount64 x) -> (POPCNTD x) |
| (PopCount32 x) -> (POPCNTW (MOVWZreg x)) |
| (PopCount16 x) -> (POPCNTW (MOVHZreg x)) |
| (PopCount8 x) -> (POPCNTB (MOVBZreg x)) |
| |
| (And(64|32|16|8) x y) -> (AND x y) |
| (Or(64|32|16|8) x y) -> (OR x y) |
| (Xor(64|32|16|8) x y) -> (XOR x y) |
| |
| (Neg(64|32|16|8) x) -> (NEG x) |
| (Neg64F x) -> (FNEG x) |
| (Neg32F x) -> (FNEG x) |
| |
| (Com(64|32|16|8) x) -> (NOR x x) |
| |
| // Lowering boolean ops |
| (AndB x y) -> (AND x y) |
| (OrB x y) -> (OR x y) |
| (Not x) -> (XORconst [1] x) |
| |
| // Use ANDN for AND x NOT y |
| (AND x (NOR y y)) -> (ANDN x y) |
| |
| // Lowering comparisons |
| (EqB x y) -> (ANDconst [1] (EQV x y)) |
| // Sign extension dependence on operand sign sets up for sign/zero-extension elision later |
| (Eq8 x y) && isSigned(x.Type) && isSigned(y.Type) -> (Equal (CMPW (SignExt8to32 x) (SignExt8to32 y))) |
| (Eq16 x y) && isSigned(x.Type) && isSigned(y.Type) -> (Equal (CMPW (SignExt16to32 x) (SignExt16to32 y))) |
| (Eq8 x y) -> (Equal (CMPW (ZeroExt8to32 x) (ZeroExt8to32 y))) |
| (Eq16 x y) -> (Equal (CMPW (ZeroExt16to32 x) (ZeroExt16to32 y))) |
| (Eq32 x y) -> (Equal (CMPW x y)) |
| (Eq64 x y) -> (Equal (CMP x y)) |
| (Eq32F x y) -> (Equal (FCMPU x y)) |
| (Eq64F x y) -> (Equal (FCMPU x y)) |
| (EqPtr x y) -> (Equal (CMP x y)) |
| |
| (NeqB x y) -> (XOR x y) |
| // Like Eq8 and Eq16, prefer sign extension likely to enable later elision. |
| (Neq8 x y) && isSigned(x.Type) && isSigned(y.Type) -> (NotEqual (CMPW (SignExt8to32 x) (SignExt8to32 y))) |
| (Neq16 x y) && isSigned(x.Type) && isSigned(y.Type) -> (NotEqual (CMPW (SignExt16to32 x) (SignExt16to32 y))) |
| (Neq8 x y) -> (NotEqual (CMPW (ZeroExt8to32 x) (ZeroExt8to32 y))) |
| (Neq16 x y) -> (NotEqual (CMPW (ZeroExt16to32 x) (ZeroExt16to32 y))) |
| (Neq32 x y) -> (NotEqual (CMPW x y)) |
| (Neq64 x y) -> (NotEqual (CMP x y)) |
| (Neq32F x y) -> (NotEqual (FCMPU x y)) |
| (Neq64F x y) -> (NotEqual (FCMPU x y)) |
| (NeqPtr x y) -> (NotEqual (CMP x y)) |
| |
| (Less8 x y) -> (LessThan (CMPW (SignExt8to32 x) (SignExt8to32 y))) |
| (Less16 x y) -> (LessThan (CMPW (SignExt16to32 x) (SignExt16to32 y))) |
| (Less32 x y) -> (LessThan (CMPW x y)) |
| (Less64 x y) -> (LessThan (CMP x y)) |
| (Less32F x y) -> (FLessThan (FCMPU x y)) |
| (Less64F x y) -> (FLessThan (FCMPU x y)) |
| |
| (Less8U x y) -> (LessThan (CMPWU (ZeroExt8to32 x) (ZeroExt8to32 y))) |
| (Less16U x y) -> (LessThan (CMPWU (ZeroExt16to32 x) (ZeroExt16to32 y))) |
| (Less32U x y) -> (LessThan (CMPWU x y)) |
| (Less64U x y) -> (LessThan (CMPU x y)) |
| |
| (Leq8 x y) -> (LessEqual (CMPW (SignExt8to32 x) (SignExt8to32 y))) |
| (Leq16 x y) -> (LessEqual (CMPW (SignExt16to32 x) (SignExt16to32 y))) |
| (Leq32 x y) -> (LessEqual (CMPW x y)) |
| (Leq64 x y) -> (LessEqual (CMP x y)) |
| (Leq32F x y) -> (FLessEqual (FCMPU x y)) |
| (Leq64F x y) -> (FLessEqual (FCMPU x y)) |
| |
| (Leq8U x y) -> (LessEqual (CMPWU (ZeroExt8to32 x) (ZeroExt8to32 y))) |
| (Leq16U x y) -> (LessEqual (CMPWU (ZeroExt16to32 x) (ZeroExt16to32 y))) |
| (Leq32U x y) -> (LessEqual (CMPWU x y)) |
| (Leq64U x y) -> (LessEqual (CMPU x y)) |
| |
| (Greater8 x y) -> (GreaterThan (CMPW (SignExt8to32 x) (SignExt8to32 y))) |
| (Greater16 x y) -> (GreaterThan (CMPW (SignExt16to32 x) (SignExt16to32 y))) |
| (Greater32 x y) -> (GreaterThan (CMPW x y)) |
| (Greater64 x y) -> (GreaterThan (CMP x y)) |
| (Greater(32|64)F x y) -> (FGreaterThan (FCMPU x y)) |
| |
| (Greater8U x y) -> (GreaterThan (CMPWU (ZeroExt8to32 x) (ZeroExt8to32 y))) |
| (Greater16U x y) -> (GreaterThan (CMPWU (ZeroExt16to32 x) (ZeroExt16to32 y))) |
| (Greater32U x y) -> (GreaterThan (CMPWU x y)) |
| (Greater64U x y) -> (GreaterThan (CMPU x y)) |
| |
| (Geq8 x y) -> (GreaterEqual (CMPW (SignExt8to32 x) (SignExt8to32 y))) |
| (Geq16 x y) -> (GreaterEqual (CMPW (SignExt16to32 x) (SignExt16to32 y))) |
| (Geq32 x y) -> (GreaterEqual (CMPW x y)) |
| (Geq64 x y) -> (GreaterEqual (CMP x y)) |
| (Geq(32|64)F x y) -> (FGreaterEqual (FCMPU x y)) |
| |
| (Geq8U x y) -> (GreaterEqual (CMPWU (ZeroExt8to32 x) (ZeroExt8to32 y))) |
| (Geq16U x y) -> (GreaterEqual (CMPWU (ZeroExt16to32 x) (ZeroExt16to32 y))) |
| (Geq32U x y) -> (GreaterEqual (CMPWU x y)) |
| (Geq64U x y) -> (GreaterEqual (CMPU x y)) |
| |
| // Absorb pseudo-ops into blocks. |
| (If (Equal cc) yes no) -> (EQ cc yes no) |
| (If (NotEqual cc) yes no) -> (NE cc yes no) |
| (If (LessThan cc) yes no) -> (LT cc yes no) |
| (If (LessEqual cc) yes no) -> (LE cc yes no) |
| (If (GreaterThan cc) yes no) -> (GT cc yes no) |
| (If (GreaterEqual cc) yes no) -> (GE cc yes no) |
| (If (FLessThan cc) yes no) -> (FLT cc yes no) |
| (If (FLessEqual cc) yes no) -> (FLE cc yes no) |
| (If (FGreaterThan cc) yes no) -> (FGT cc yes no) |
| (If (FGreaterEqual cc) yes no) -> (FGE cc yes no) |
| |
| (If cond yes no) -> (NE (CMPWconst [0] cond) yes no) |
| |
| // Absorb boolean tests into block |
| (NE (CMPWconst [0] (Equal cc)) yes no) -> (EQ cc yes no) |
| (NE (CMPWconst [0] (NotEqual cc)) yes no) -> (NE cc yes no) |
| (NE (CMPWconst [0] (LessThan cc)) yes no) -> (LT cc yes no) |
| (NE (CMPWconst [0] (LessEqual cc)) yes no) -> (LE cc yes no) |
| (NE (CMPWconst [0] (GreaterThan cc)) yes no) -> (GT cc yes no) |
| (NE (CMPWconst [0] (GreaterEqual cc)) yes no) -> (GE cc yes no) |
| (NE (CMPWconst [0] (FLessThan cc)) yes no) -> (FLT cc yes no) |
| (NE (CMPWconst [0] (FLessEqual cc)) yes no) -> (FLE cc yes no) |
| (NE (CMPWconst [0] (FGreaterThan cc)) yes no) -> (FGT cc yes no) |
| (NE (CMPWconst [0] (FGreaterEqual cc)) yes no) -> (FGE cc yes no) |
| |
| // Elide compares of bit tests // TODO need to make both CC and result of ANDCC available. |
| (EQ (CMPconst [0] (ANDconst [c] x)) yes no) -> (EQ (ANDCCconst [c] x) yes no) |
| (NE (CMPconst [0] (ANDconst [c] x)) yes no) -> (NE (ANDCCconst [c] x) yes no) |
| (EQ (CMPWconst [0] (ANDconst [c] x)) yes no) -> (EQ (ANDCCconst [c] x) yes no) |
| (NE (CMPWconst [0] (ANDconst [c] x)) yes no) -> (NE (ANDCCconst [c] x) yes no) |
| |
| // absorb flag constants into branches |
| (EQ (FlagEQ) yes no) -> (First nil yes no) |
| (EQ (FlagLT) yes no) -> (First nil no yes) |
| (EQ (FlagGT) yes no) -> (First nil no yes) |
| |
| (NE (FlagEQ) yes no) -> (First nil no yes) |
| (NE (FlagLT) yes no) -> (First nil yes no) |
| (NE (FlagGT) yes no) -> (First nil yes no) |
| |
| (LT (FlagEQ) yes no) -> (First nil no yes) |
| (LT (FlagLT) yes no) -> (First nil yes no) |
| (LT (FlagGT) yes no) -> (First nil no yes) |
| |
| (LE (FlagEQ) yes no) -> (First nil yes no) |
| (LE (FlagLT) yes no) -> (First nil yes no) |
| (LE (FlagGT) yes no) -> (First nil no yes) |
| |
| (GT (FlagEQ) yes no) -> (First nil no yes) |
| (GT (FlagLT) yes no) -> (First nil no yes) |
| (GT (FlagGT) yes no) -> (First nil yes no) |
| |
| (GE (FlagEQ) yes no) -> (First nil yes no) |
| (GE (FlagLT) yes no) -> (First nil no yes) |
| (GE (FlagGT) yes no) -> (First nil yes no) |
| |
| // absorb InvertFlags into branches |
| (LT (InvertFlags cmp) yes no) -> (GT cmp yes no) |
| (GT (InvertFlags cmp) yes no) -> (LT cmp yes no) |
| (LE (InvertFlags cmp) yes no) -> (GE cmp yes no) |
| (GE (InvertFlags cmp) yes no) -> (LE cmp yes no) |
| (EQ (InvertFlags cmp) yes no) -> (EQ cmp yes no) |
| (NE (InvertFlags cmp) yes no) -> (NE cmp yes no) |
| |
| // constant comparisons |
| (CMPWconst (MOVDconst [x]) [y]) && int32(x)==int32(y) -> (FlagEQ) |
| (CMPWconst (MOVDconst [x]) [y]) && int32(x)<int32(y) -> (FlagLT) |
| (CMPWconst (MOVDconst [x]) [y]) && int32(x)>int32(y) -> (FlagGT) |
| |
| (CMPconst (MOVDconst [x]) [y]) && x==y -> (FlagEQ) |
| (CMPconst (MOVDconst [x]) [y]) && x<y -> (FlagLT) |
| (CMPconst (MOVDconst [x]) [y]) && x>y -> (FlagGT) |
| |
| (CMPWUconst (MOVDconst [x]) [y]) && int32(x)==int32(y) -> (FlagEQ) |
| (CMPWUconst (MOVDconst [x]) [y]) && uint32(x)<uint32(y) -> (FlagLT) |
| (CMPWUconst (MOVDconst [x]) [y]) && uint32(x)>uint32(y) -> (FlagGT) |
| |
| (CMPUconst (MOVDconst [x]) [y]) && x==y -> (FlagEQ) |
| (CMPUconst (MOVDconst [x]) [y]) && uint64(x)<uint64(y) -> (FlagLT) |
| (CMPUconst (MOVDconst [x]) [y]) && uint64(x)>uint64(y) -> (FlagGT) |
| |
| // other known comparisons |
| //(CMPconst (MOVBUreg _) [c]) && 0xff < c -> (FlagLT) |
| //(CMPconst (MOVHUreg _) [c]) && 0xffff < c -> (FlagLT) |
| //(CMPconst (ANDconst _ [m]) [n]) && 0 <= int32(m) && int32(m) < int32(n) -> (FlagLT) |
| //(CMPconst (SRLconst _ [c]) [n]) && 0 <= n && 0 < c && c <= 32 && (1<<uint32(32-c)) <= uint32(n) -> (FlagLT) |
| |
| // absorb flag constants into boolean values |
| (Equal (FlagEQ)) -> (MOVDconst [1]) |
| (Equal (FlagLT)) -> (MOVDconst [0]) |
| (Equal (FlagGT)) -> (MOVDconst [0]) |
| |
| (NotEqual (FlagEQ)) -> (MOVDconst [0]) |
| (NotEqual (FlagLT)) -> (MOVDconst [1]) |
| (NotEqual (FlagGT)) -> (MOVDconst [1]) |
| |
| (LessThan (FlagEQ)) -> (MOVDconst [0]) |
| (LessThan (FlagLT)) -> (MOVDconst [1]) |
| (LessThan (FlagGT)) -> (MOVDconst [0]) |
| |
| (LessEqual (FlagEQ)) -> (MOVDconst [1]) |
| (LessEqual (FlagLT)) -> (MOVDconst [1]) |
| (LessEqual (FlagGT)) -> (MOVDconst [0]) |
| |
| (GreaterThan (FlagEQ)) -> (MOVDconst [0]) |
| (GreaterThan (FlagLT)) -> (MOVDconst [0]) |
| (GreaterThan (FlagGT)) -> (MOVDconst [1]) |
| |
| (GreaterEqual (FlagEQ)) -> (MOVDconst [1]) |
| (GreaterEqual (FlagLT)) -> (MOVDconst [0]) |
| (GreaterEqual (FlagGT)) -> (MOVDconst [1]) |
| |
| // absorb InvertFlags into boolean values |
| (Equal (InvertFlags x)) -> (Equal x) |
| (NotEqual (InvertFlags x)) -> (NotEqual x) |
| (LessThan (InvertFlags x)) -> (GreaterThan x) |
| (GreaterThan (InvertFlags x)) -> (LessThan x) |
| (LessEqual (InvertFlags x)) -> (GreaterEqual x) |
| (GreaterEqual (InvertFlags x)) -> (LessEqual x) |
| |
| // Elide compares of bit tests // TODO need to make both CC and result of ANDCC available. |
| ((EQ|NE|LT|LE|GT|GE) (CMPconst [0] (ANDconst [c] x)) yes no) -> ((EQ|NE|LT|LE|GT|GE) (ANDCCconst [c] x) yes no) |
| ((EQ|NE|LT|LE|GT|GE) (CMPWconst [0] (ANDconst [c] x)) yes no) -> ((EQ|NE|LT|LE|GT|GE) (ANDCCconst [c] x) yes no) |
| ((EQ|NE|LT|LE|GT|GE) (CMPconst [0] z:(AND x y)) yes no) && z.Uses == 1 -> ((EQ|NE|LT|LE|GT|GE) (ANDCC x y) yes no) |
| ((EQ|NE|LT|LE|GT|GE) (CMPconst [0] z:(OR x y)) yes no) && z.Uses == 1 -> ((EQ|NE|LT|LE|GT|GE) (ORCC x y) yes no) |
| ((EQ|NE|LT|LE|GT|GE) (CMPconst [0] z:(XOR x y)) yes no) && z.Uses == 1 -> ((EQ|NE|LT|LE|GT|GE) (XORCC x y) yes no) |
| |
| // Lowering loads |
| (Load <t> ptr mem) && (is64BitInt(t) || isPtr(t)) -> (MOVDload ptr mem) |
| (Load <t> ptr mem) && is32BitInt(t) && isSigned(t) -> (MOVWload ptr mem) |
| (Load <t> ptr mem) && is32BitInt(t) && !isSigned(t) -> (MOVWZload ptr mem) |
| (Load <t> ptr mem) && is16BitInt(t) && isSigned(t) -> (MOVHload ptr mem) |
| (Load <t> ptr mem) && is16BitInt(t) && !isSigned(t) -> (MOVHZload ptr mem) |
| (Load <t> ptr mem) && t.IsBoolean() -> (MOVBZload ptr mem) |
| (Load <t> ptr mem) && is8BitInt(t) && isSigned(t) -> (MOVBreg (MOVBZload ptr mem)) // PPC has no signed-byte load. |
| (Load <t> ptr mem) && is8BitInt(t) && !isSigned(t) -> (MOVBZload ptr mem) |
| |
| (Load <t> ptr mem) && is32BitFloat(t) -> (FMOVSload ptr mem) |
| (Load <t> ptr mem) && is64BitFloat(t) -> (FMOVDload ptr mem) |
| |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 8 && is64BitFloat(val.Type) -> (FMOVDstore ptr val mem) |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 8 && is32BitFloat(val.Type) -> (FMOVDstore ptr val mem) // glitch from (Cvt32Fto64F x) -> x -- type is wrong |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 4 && is32BitFloat(val.Type) -> (FMOVSstore ptr val mem) |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 8 && (is64BitInt(val.Type) || isPtr(val.Type)) -> (MOVDstore ptr val mem) |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 4 && is32BitInt(val.Type) -> (MOVWstore ptr val mem) |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 2 -> (MOVHstore ptr val mem) |
| (Store {t} ptr val mem) && t.(*types.Type).Size() == 1 -> (MOVBstore ptr val mem) |
| |
| // Using Zero instead of LoweredZero allows the |
| // target address to be folded where possible. |
| (Zero [0] _ mem) -> mem |
| (Zero [1] destptr mem) -> (MOVBstorezero destptr mem) |
| (Zero [2] destptr mem) -> |
| (MOVHstorezero destptr mem) |
| (Zero [3] destptr mem) -> |
| (MOVBstorezero [2] destptr |
| (MOVHstorezero destptr mem)) |
| (Zero [4] destptr mem) -> |
| (MOVWstorezero destptr mem) |
| (Zero [5] destptr mem) -> |
| (MOVBstorezero [4] destptr |
| (MOVWstorezero destptr mem)) |
| (Zero [6] destptr mem) -> |
| (MOVHstorezero [4] destptr |
| (MOVWstorezero destptr mem)) |
| (Zero [7] destptr mem) -> |
| (MOVBstorezero [6] destptr |
| (MOVHstorezero [4] destptr |
| (MOVWstorezero destptr mem))) |
| |
| // MOVD for store with DS must have offsets that are multiple of 4 |
| (Zero [8] {t} destptr mem) && t.(*types.Type).Alignment()%4 == 0 -> |
| (MOVDstorezero destptr mem) |
| (Zero [8] destptr mem) -> |
| (MOVWstorezero [4] destptr |
| (MOVWstorezero [0] destptr mem)) |
| // Handle these cases only if aligned properly, otherwise use general case below |
| (Zero [12] {t} destptr mem) && t.(*types.Type).Alignment()%4 == 0 -> |
| (MOVWstorezero [8] destptr |
| (MOVDstorezero [0] destptr mem)) |
| (Zero [16] {t} destptr mem) && t.(*types.Type).Alignment()%4 == 0 -> |
| (MOVDstorezero [8] destptr |
| (MOVDstorezero [0] destptr mem)) |
| (Zero [24] {t} destptr mem) && t.(*types.Type).Alignment()%4 == 0 -> |
| (MOVDstorezero [16] destptr |
| (MOVDstorezero [8] destptr |
| (MOVDstorezero [0] destptr mem))) |
| (Zero [32] {t} destptr mem) && t.(*types.Type).Alignment()%4 == 0 -> |
| (MOVDstorezero [24] destptr |
| (MOVDstorezero [16] destptr |
| (MOVDstorezero [8] destptr |
| (MOVDstorezero [0] destptr mem)))) |
| |
| // Handle cases not handled above |
| (Zero [s] ptr mem) -> (LoweredZero [s] ptr mem) |
| |
| // moves |
| // Only the MOVD and MOVW instructions require 4 byte |
| // alignment in the offset field. The other MOVx instructions |
| // allow any alignment. |
| (Move [0] _ _ mem) -> mem |
| (Move [1] dst src mem) -> (MOVBstore dst (MOVBZload src mem) mem) |
| (Move [2] dst src mem) -> |
| (MOVHstore dst (MOVHZload src mem) mem) |
| (Move [4] dst src mem) -> |
| (MOVWstore dst (MOVWZload src mem) mem) |
| // MOVD for load and store must have offsets that are multiple of 4 |
| (Move [8] {t} dst src mem) && t.(*types.Type).Alignment()%4 == 0 -> |
| (MOVDstore dst (MOVDload src mem) mem) |
| (Move [8] dst src mem) -> |
| (MOVWstore [4] dst (MOVWZload [4] src mem) |
| (MOVWstore dst (MOVWZload src mem) mem)) |
| (Move [3] dst src mem) -> |
| (MOVBstore [2] dst (MOVBZload [2] src mem) |
| (MOVHstore dst (MOVHload src mem) mem)) |
| (Move [5] dst src mem) -> |
| (MOVBstore [4] dst (MOVBZload [4] src mem) |
| (MOVWstore dst (MOVWZload src mem) mem)) |
| (Move [6] dst src mem) -> |
| (MOVHstore [4] dst (MOVHZload [4] src mem) |
| (MOVWstore dst (MOVWZload src mem) mem)) |
| (Move [7] dst src mem) -> |
| (MOVBstore [6] dst (MOVBZload [6] src mem) |
| (MOVHstore [4] dst (MOVHZload [4] src mem) |
| (MOVWstore dst (MOVWZload src mem) mem))) |
| |
| // Large move uses a loop. Since the address is computed and the |
| // offset is zero, any alignment can be used. |
| (Move [s] dst src mem) && s > 8 -> |
| (LoweredMove [s] dst src mem) |
| |
| // Calls |
| // Lowering calls |
| (StaticCall [argwid] {target} mem) -> (CALLstatic [argwid] {target} mem) |
| (ClosureCall [argwid] entry closure mem) -> (CALLclosure [argwid] entry closure mem) |
| (InterCall [argwid] entry mem) -> (CALLinter [argwid] entry mem) |
| |
| // Miscellaneous |
| (GetClosurePtr) -> (LoweredGetClosurePtr) |
| (GetCallerSP) -> (LoweredGetCallerSP) |
| (GetCallerPC) -> (LoweredGetCallerPC) |
| (IsNonNil ptr) -> (NotEqual (CMPconst [0] ptr)) |
| (IsInBounds idx len) -> (LessThan (CMPU idx len)) |
| (IsSliceInBounds idx len) -> (LessEqual (CMPU idx len)) |
| (NilCheck ptr mem) -> (LoweredNilCheck ptr mem) |
| |
| // Write barrier. |
| (WB {fn} destptr srcptr mem) -> (LoweredWB {fn} destptr srcptr mem) |
| |
| // Optimizations |
| // Note that PPC "logical" immediates come in 0:15 and 16:31 unsigned immediate forms, |
| // so ORconst, XORconst easily expand into a pair. |
| |
| // Include very-large constants in the const-const case. |
| (AND (MOVDconst [c]) (MOVDconst [d])) -> (MOVDconst [c&d]) |
| (OR (MOVDconst [c]) (MOVDconst [d])) -> (MOVDconst [c|d]) |
| (XOR (MOVDconst [c]) (MOVDconst [d])) -> (MOVDconst [c^d]) |
| |
| // Discover consts |
| (AND x (MOVDconst [c])) && isU16Bit(c) -> (ANDconst [c] x) |
| (XOR x (MOVDconst [c])) && isU32Bit(c) -> (XORconst [c] x) |
| (OR x (MOVDconst [c])) && isU32Bit(c) -> (ORconst [c] x) |
| |
| // Simplify consts |
| (ANDconst [c] (ANDconst [d] x)) -> (ANDconst [c&d] x) |
| (ORconst [c] (ORconst [d] x)) -> (ORconst [c|d] x) |
| (XORconst [c] (XORconst [d] x)) -> (XORconst [c^d] x) |
| (ANDconst [-1] x) -> x |
| (ANDconst [0] _) -> (MOVDconst [0]) |
| (XORconst [0] x) -> x |
| (ORconst [-1] _) -> (MOVDconst [-1]) |
| (ORconst [0] x) -> x |
| |
| // zero-extend of small and -> small and |
| (MOVBZreg y:(ANDconst [c] _)) && uint64(c) <= 0xFF -> y |
| (MOVHZreg y:(ANDconst [c] _)) && uint64(c) <= 0xFFFF -> y |
| (MOVWZreg y:(ANDconst [c] _)) && uint64(c) <= 0xFFFFFFFF -> y |
| (MOVWZreg y:(AND (MOVDconst [c]) _)) && uint64(c) <= 0xFFFFFFFF -> y |
| |
| // sign extend of small-positive and -> small-positive-and |
| (MOVBreg y:(ANDconst [c] _)) && uint64(c) <= 0x7F -> y |
| (MOVHreg y:(ANDconst [c] _)) && uint64(c) <= 0x7FFF -> y |
| (MOVWreg y:(ANDconst [c] _)) && uint64(c) <= 0xFFFF -> y // 0xFFFF is largest immediate constant, when regarded as 32-bit is > 0 |
| (MOVWreg y:(AND (MOVDconst [c]) _)) && uint64(c) <= 0x7FFFFFFF -> y |
| |
| // small and of zero-extend -> either zero-extend or small and |
| (ANDconst [c] y:(MOVBZreg _)) && c&0xFF == 0xFF -> y |
| (ANDconst [0xFF] y:(MOVBreg _)) -> y |
| (ANDconst [c] y:(MOVHZreg _)) && c&0xFFFF == 0xFFFF -> y |
| (ANDconst [0xFFFF] y:(MOVHreg _)) -> y |
| |
| (AND (MOVDconst [c]) y:(MOVWZreg _)) && c&0xFFFFFFFF == 0xFFFFFFFF -> y |
| (AND (MOVDconst [0xFFFFFFFF]) y:(MOVWreg x)) -> (MOVWZreg x) |
| // normal case |
| (ANDconst [c] (MOV(B|BZ)reg x)) -> (ANDconst [c&0xFF] x) |
| (ANDconst [c] (MOV(H|HZ)reg x)) -> (ANDconst [c&0xFFFF] x) |
| (ANDconst [c] (MOV(W|WZ)reg x)) -> (ANDconst [c&0xFFFFFFFF] x) |
| |
| // Eliminate unnecessary sign/zero extend following right shift |
| (MOV(B|H|W)Zreg (SRWconst [c] (MOVBZreg x))) -> (SRWconst [c] (MOVBZreg x)) |
| (MOV(H|W)Zreg (SRWconst [c] (MOVHZreg x))) -> (SRWconst [c] (MOVHZreg x)) |
| (MOVWZreg (SRWconst [c] (MOVWZreg x))) -> (SRWconst [c] (MOVWZreg x)) |
| (MOV(B|H|W)reg (SRAWconst [c] (MOVBreg x))) -> (SRAWconst [c] (MOVBreg x)) |
| (MOV(H|W)reg (SRAWconst [c] (MOVHreg x))) -> (SRAWconst [c] (MOVHreg x)) |
| (MOVWreg (SRAWconst [c] (MOVWreg x))) -> (SRAWconst [c] (MOVWreg x)) |
| |
| (MOVWZreg (SRWconst [c] x)) && sizeof(x.Type) <= 32 -> (SRWconst [c] x) |
| (MOVHZreg (SRWconst [c] x)) && sizeof(x.Type) <= 16 -> (SRWconst [c] x) |
| (MOVBZreg (SRWconst [c] x)) && sizeof(x.Type) == 8 -> (SRWconst [c] x) |
| (MOVWreg (SRAWconst [c] x)) && sizeof(x.Type) <= 32 -> (SRAWconst [c] x) |
| (MOVHreg (SRAWconst [c] x)) && sizeof(x.Type) <= 16 -> (SRAWconst [c] x) |
| (MOVBreg (SRAWconst [c] x)) && sizeof(x.Type) == 8 -> (SRAWconst [c] x) |
| |
| // initial right shift will handle sign/zero extend |
| (MOVBZreg (SRDconst [c] x)) && c>=56 -> (SRDconst [c] x) |
| (MOVBreg (SRDconst [c] x)) && c>56 -> (SRDconst [c] x) |
| (MOVBreg (SRDconst [c] x)) && c==56 -> (SRADconst [c] x) |
| (MOVBZreg (SRWconst [c] x)) && c>=24 -> (SRWconst [c] x) |
| (MOVBreg (SRWconst [c] x)) && c>24 -> (SRWconst [c] x) |
| (MOVBreg (SRWconst [c] x)) && c==24 -> (SRAWconst [c] x) |
| |
| (MOVHZreg (SRDconst [c] x)) && c>=48 -> (SRDconst [c] x) |
| (MOVHreg (SRDconst [c] x)) && c>48 -> (SRDconst [c] x) |
| (MOVHreg (SRDconst [c] x)) && c==48 -> (SRADconst [c] x) |
| (MOVHZreg (SRWconst [c] x)) && c>=16 -> (SRWconst [c] x) |
| (MOVHreg (SRWconst [c] x)) && c>16 -> (SRWconst [c] x) |
| (MOVHreg (SRWconst [c] x)) && c==16 -> (SRAWconst [c] x) |
| |
| (MOVWZreg (SRDconst [c] x)) && c>=32 -> (SRDconst [c] x) |
| (MOVWreg (SRDconst [c] x)) && c>32 -> (SRDconst [c] x) |
| (MOVWreg (SRDconst [c] x)) && c==32 -> (SRADconst [c] x) |
| |
| // Various redundant zero/sign extension combinations. |
| (MOVBZreg y:(MOVBZreg _)) -> y // repeat |
| (MOVBreg y:(MOVBreg _)) -> y // repeat |
| (MOVBreg (MOVBZreg x)) -> (MOVBreg x) |
| (MOVBZreg (MOVBreg x)) -> (MOVBZreg x) |
| |
| // H - there are more combinations than these |
| |
| (MOVHZreg y:(MOVHZreg _)) -> y // repeat |
| (MOVHZreg y:(MOVBZreg _)) -> y // wide of narrow |
| (MOVHZreg y:(MOVHBRload _ _)) -> y |
| |
| (MOVHreg y:(MOVHreg _)) -> y // repeat |
| (MOVHreg y:(MOVBreg _)) -> y // wide of narrow |
| |
| (MOVHreg y:(MOVHZreg x)) -> (MOVHreg x) |
| (MOVHZreg y:(MOVHreg x)) -> (MOVHZreg x) |
| |
| // W - there are more combinations than these |
| |
| (MOVWZreg y:(MOVWZreg _)) -> y // repeat |
| (MOVWZreg y:(MOVHZreg _)) -> y // wide of narrow |
| (MOVWZreg y:(MOVBZreg _)) -> y // wide of narrow |
| (MOVWZreg y:(MOVHBRload _ _)) -> y |
| (MOVWZreg y:(MOVWBRload _ _)) -> y |
| |
| (MOVWreg y:(MOVWreg _)) -> y // repeat |
| (MOVWreg y:(MOVHreg _)) -> y // wide of narrow |
| (MOVWreg y:(MOVBreg _)) -> y // wide of narrow |
| |
| (MOVWreg y:(MOVWZreg x)) -> (MOVWreg x) |
| (MOVWZreg y:(MOVWreg x)) -> (MOVWZreg x) |
| |
| // Arithmetic constant ops |
| |
| (ADD x (MOVDconst [c])) && is32Bit(c) -> (ADDconst [c] x) |
| (ADDconst [c] (ADDconst [d] x)) && is32Bit(c+d) -> (ADDconst [c+d] x) |
| (ADDconst [0] x) -> x |
| (SUB x (MOVDconst [c])) && is32Bit(-c) -> (ADDconst [-c] x) |
| // TODO deal with subtract-from-const |
| |
| (ADDconst [c] (MOVDaddr [d] {sym} x)) -> (MOVDaddr [c+d] {sym} x) |
| |
| // Use register moves instead of stores and loads to move int<->float values |
| // Common with math Float64bits, Float64frombits |
| (MOVDload [off] {sym} ptr (FMOVDstore [off] {sym} ptr x _)) -> (MFVSRD x) |
| (FMOVDload [off] {sym} ptr (MOVDstore [off] {sym} ptr x _)) -> (MTVSRD x) |
| |
| (FMOVDstore [off] {sym} ptr (MTVSRD x) mem) -> (MOVDstore [off] {sym} ptr x mem) |
| (MOVDstore [off] {sym} ptr (MFVSRD x) mem) -> (FMOVDstore [off] {sym} ptr x mem) |
| |
| (MTVSRD (MOVDconst [c])) -> (FMOVDconst [c]) |
| (MFVSRD (FMOVDconst [c])) -> (MOVDconst [c]) |
| |
| (MTVSRD x:(MOVDload [off] {sym} ptr mem)) && x.Uses == 1 && clobber(x) -> @x.Block (FMOVDload [off] {sym} ptr mem) |
| (MFVSRD x:(FMOVDload [off] {sym} ptr mem)) && x.Uses == 1 && clobber(x) -> @x.Block (MOVDload [off] {sym} ptr mem) |
| |
| // Fold offsets for stores. |
| (MOVDstore [off1] {sym} (ADDconst [off2] x) val mem) && is16Bit(off1+off2) -> (MOVDstore [off1+off2] {sym} x val mem) |
| (MOVWstore [off1] {sym} (ADDconst [off2] x) val mem) && is16Bit(off1+off2) -> (MOVWstore [off1+off2] {sym} x val mem) |
| (MOVHstore [off1] {sym} (ADDconst [off2] x) val mem) && is16Bit(off1+off2) -> (MOVHstore [off1+off2] {sym} x val mem) |
| (MOVBstore [off1] {sym} (ADDconst [off2] x) val mem) && is16Bit(off1+off2) -> (MOVBstore [off1+off2] {sym} x val mem) |
| |
| (FMOVSstore [off1] {sym} (ADDconst [off2] ptr) val mem) && is16Bit(off1+off2) -> (FMOVSstore [off1+off2] {sym} ptr val mem) |
| (FMOVDstore [off1] {sym} (ADDconst [off2] ptr) val mem) && is16Bit(off1+off2) -> (FMOVDstore [off1+off2] {sym} ptr val mem) |
| |
| // Fold address into load/store. |
| // The assembler needs to generate several instructions and use |
| // temp register for accessing global, and each time it will reload |
| // the temp register. So don't fold address of global, unless there |
| // is only one use. |
| (MOVBstore [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVBstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) |
| (MOVHstore [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVHstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) |
| (MOVWstore [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVWstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) |
| (MOVDstore [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVDstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) |
| |
| (FMOVSstore [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (FMOVSstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) |
| (FMOVDstore [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) val mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (FMOVDstore [off1+off2] {mergeSym(sym1,sym2)} ptr val mem) |
| |
| (MOVBZload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVBZload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (MOVHload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVHload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (MOVHZload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVHZload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (MOVWload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVWload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (MOVWZload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVWZload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (MOVDload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (MOVDload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (FMOVSload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (FMOVSload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| (FMOVDload [off1] {sym1} p:(MOVDaddr [off2] {sym2} ptr) mem) && canMergeSym(sym1,sym2) |
| && (ptr.Op != OpSB || p.Uses == 1) -> |
| (FMOVDload [off1+off2] {mergeSym(sym1,sym2)} ptr mem) |
| |
| // Fold offsets for loads. |
| (FMOVSload [off1] {sym} (ADDconst [off2] ptr) mem) && is16Bit(off1+off2) -> (FMOVSload [off1+off2] {sym} ptr mem) |
| (FMOVDload [off1] {sym} (ADDconst [off2] ptr) mem) && is16Bit(off1+off2) -> (FMOVDload [off1+off2] {sym} ptr mem) |
| |
| (MOVDload [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> (MOVDload [off1+off2] {sym} x mem) |
| (MOVWload [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> (MOVWload [off1+off2] {sym} x mem) |
| (MOVWZload [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> (MOVWZload [off1+off2] {sym} x mem) |
| (MOVHload [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> (MOVHload [off1+off2] {sym} x mem) |
| (MOVHZload [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> (MOVHZload [off1+off2] {sym} x mem) |
| (MOVBZload [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> (MOVBZload [off1+off2] {sym} x mem) |
| |
| // Determine load + addressing that can be done as a register indexed load |
| (MOV(D|W|WZ|H|HZ|BZ)load [0] {sym} p:(ADD ptr idx) mem) && sym == nil && p.Uses == 1 -> (MOV(D|W|WZ|H|HZ|BZ)loadidx ptr idx mem) |
| |
| // Determine indexed loads with constant values that can be done without index |
| (MOV(D|W|WZ|H|HZ|BZ)loadidx ptr (MOVDconst [c]) mem) && is16Bit(c) -> (MOV(D|W|WZ|H|HZ|BZ)load [c] ptr mem) |
| (MOV(D|W|WZ|H|HZ|BZ)loadidx (MOVDconst [c]) ptr mem) && is16Bit(c) -> (MOV(D|W|WZ|H|HZ|BZ)load [c] ptr mem) |
| |
| |
| // Store of zero -> storezero |
| (MOVDstore [off] {sym} ptr (MOVDconst [0]) mem) -> (MOVDstorezero [off] {sym} ptr mem) |
| (MOVWstore [off] {sym} ptr (MOVDconst [0]) mem) -> (MOVWstorezero [off] {sym} ptr mem) |
| (MOVHstore [off] {sym} ptr (MOVDconst [0]) mem) -> (MOVHstorezero [off] {sym} ptr mem) |
| (MOVBstore [off] {sym} ptr (MOVDconst [0]) mem) -> (MOVBstorezero [off] {sym} ptr mem) |
| |
| // Fold offsets for storezero |
| (MOVDstorezero [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> |
| (MOVDstorezero [off1+off2] {sym} x mem) |
| (MOVWstorezero [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> |
| (MOVWstorezero [off1+off2] {sym} x mem) |
| (MOVHstorezero [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> |
| (MOVHstorezero [off1+off2] {sym} x mem) |
| (MOVBstorezero [off1] {sym} (ADDconst [off2] x) mem) && is16Bit(off1+off2) -> |
| (MOVBstorezero [off1+off2] {sym} x mem) |
| |
| // Stores with addressing that can be done as indexed stores |
| (MOV(D|W|H|B)store [off] {sym} p:(ADD ptr idx) val mem) && off == 0 && sym == nil && p.Uses == 1 -> (MOV(D|W|H|B)storeidx ptr idx val mem) |
| |
| // Stores with constant index values can be done without indexed instructions |
| (MOV(D|W|H|B)storeidx ptr (MOVDconst [c]) val mem) && is16Bit(c) -> (MOV(D|W|H|B)store [c] ptr val mem) |
| (MOV(D|W|H|B)storeidx (MOVDconst [c]) ptr val mem) && is16Bit(c) -> (MOV(D|W|H|B)store [c] ptr val mem) |
| |
| // Fold symbols into storezero |
| (MOVDstorezero [off1] {sym1} p:(MOVDaddr [off2] {sym2} x) mem) && canMergeSym(sym1,sym2) |
| && (x.Op != OpSB || p.Uses == 1) -> |
| (MOVDstorezero [off1+off2] {mergeSym(sym1,sym2)} x mem) |
| (MOVWstorezero [off1] {sym1} p:(MOVDaddr [off2] {sym2} x) mem) && canMergeSym(sym1,sym2) |
| && (x.Op != OpSB || p.Uses == 1) -> |
| (MOVWstorezero [off1+off2] {mergeSym(sym1,sym2)} x mem) |
| (MOVHstorezero [off1] {sym1} p:(MOVDaddr [off2] {sym2} x) mem) && canMergeSym(sym1,sym2) |
| && (x.Op != OpSB || p.Uses == 1) -> |
| (MOVHstorezero [off1+off2] {mergeSym(sym1,sym2)} x mem) |
| (MOVBstorezero [off1] {sym1} p:(MOVDaddr [off2] {sym2} x) mem) && canMergeSym(sym1,sym2) |
| && (x.Op != OpSB || p.Uses == 1) -> |
| (MOVBstorezero [off1+off2] {mergeSym(sym1,sym2)} x mem) |
| |
| // atomic intrinsics |
| (AtomicLoad(32|64|Ptr) ptr mem) -> (LoweredAtomicLoad(32|64|Ptr) [1] ptr mem) |
| (AtomicLoadAcq32 ptr mem) -> (LoweredAtomicLoad32 [0] ptr mem) |
| |
| (AtomicStore(32|64) ptr val mem) -> (LoweredAtomicStore(32|64) [1] ptr val mem) |
| (AtomicStoreRel32 ptr val mem) -> (LoweredAtomicStore32 [0] ptr val mem) |
| //(AtomicStorePtrNoWB ptr val mem) -> (STLR ptr val mem) |
| |
| (AtomicExchange(32|64) ptr val mem) -> (LoweredAtomicExchange(32|64) ptr val mem) |
| |
| (AtomicAdd(32|64) ptr val mem) -> (LoweredAtomicAdd(32|64) ptr val mem) |
| |
| (AtomicCompareAndSwap(32|64) ptr old new_ mem) -> (LoweredAtomicCas(32|64) [1] ptr old new_ mem) |
| (AtomicCompareAndSwapRel32 ptr old new_ mem) -> (LoweredAtomicCas32 [0] ptr old new_ mem) |
| |
| (AtomicAnd8 ptr val mem) -> (LoweredAtomicAnd8 ptr val mem) |
| (AtomicOr8 ptr val mem) -> (LoweredAtomicOr8 ptr val mem) |
| |
| // Lowering extension |
| // Note: we always extend to 64 bits even though some ops don't need that many result bits. |
| (SignExt8to(16|32|64) x) -> (MOVBreg x) |
| (SignExt16to(32|64) x) -> (MOVHreg x) |
| (SignExt32to64 x) -> (MOVWreg x) |
| |
| (ZeroExt8to(16|32|64) x) -> (MOVBZreg x) |
| (ZeroExt16to(32|64) x) -> (MOVHZreg x) |
| (ZeroExt32to64 x) -> (MOVWZreg x) |
| |
| (Trunc(16|32|64)to8 <t> x) && isSigned(t) -> (MOVBreg x) |
| (Trunc(16|32|64)to8 x) -> (MOVBZreg x) |
| (Trunc(32|64)to16 <t> x) && isSigned(t) -> (MOVHreg x) |
| (Trunc(32|64)to16 x) -> (MOVHZreg x) |
| (Trunc64to32 <t> x) && isSigned(t) -> (MOVWreg x) |
| (Trunc64to32 x) -> (MOVWZreg x) |
| |
| (Slicemask <t> x) -> (SRADconst (NEG <t> x) [63]) |
| |
| // Note that MOV??reg returns a 64-bit int, x is not necessarily that wide |
| // This may interact with other patterns in the future. (Compare with arm64) |
| (MOV(B|H|W)Zreg x:(MOVBZload _ _)) -> x |
| (MOV(B|H|W)Zreg x:(MOVBZloadidx _ _ _)) -> x |
| (MOV(H|W)Zreg x:(MOVHZload _ _)) -> x |
| (MOV(H|W)Zreg x:(MOVHZloadidx _ _ _)) -> x |
| (MOV(H|W)reg x:(MOVHload _ _)) -> x |
| (MOV(H|W)reg x:(MOVHloadidx _ _ _)) -> x |
| (MOVWZreg x:(MOVWZload _ _)) -> x |
| (MOVWZreg x:(MOVWZloadidx _ _ _)) -> x |
| (MOVWreg x:(MOVWload _ _)) -> x |
| (MOVWreg x:(MOVWloadidx _ _ _)) -> x |
| |
| // don't extend if argument is already extended |
| (MOVBreg x:(Arg <t>)) && is8BitInt(t) && isSigned(t) -> x |
| (MOVBZreg x:(Arg <t>)) && is8BitInt(t) && !isSigned(t) -> x |
| (MOVHreg x:(Arg <t>)) && (is8BitInt(t) || is16BitInt(t)) && isSigned(t) -> x |
| (MOVHZreg x:(Arg <t>)) && (is8BitInt(t) || is16BitInt(t)) && !isSigned(t) -> x |
| (MOVWreg x:(Arg <t>)) && (is8BitInt(t) || is16BitInt(t) || is32BitInt(t)) && isSigned(t) -> x |
| (MOVWZreg x:(Arg <t>)) && (is8BitInt(t) || is16BitInt(t) || is32BitInt(t)) && !isSigned(t) -> x |
| |
| (MOVBZreg (MOVDconst [c])) -> (MOVDconst [int64(uint8(c))]) |
| (MOVBreg (MOVDconst [c])) -> (MOVDconst [int64(int8(c))]) |
| (MOVHZreg (MOVDconst [c])) -> (MOVDconst [int64(uint16(c))]) |
| (MOVHreg (MOVDconst [c])) -> (MOVDconst [int64(int16(c))]) |
| (MOVWreg (MOVDconst [c])) -> (MOVDconst [int64(int32(c))]) |
| (MOVWZreg (MOVDconst [c])) -> (MOVDconst [int64(uint32(c))]) |
| |
| |
| // Lose widening ops fed to stores |
| (MOVBstore [off] {sym} ptr (MOV(B|BZ|H|HZ|W|WZ)reg x) mem) -> (MOVBstore [off] {sym} ptr x mem) |
| (MOVHstore [off] {sym} ptr (MOV(H|HZ|W|WZ)reg x) mem) -> (MOVHstore [off] {sym} ptr x mem) |
| (MOVWstore [off] {sym} ptr (MOV(W|WZ)reg x) mem) -> (MOVWstore [off] {sym} ptr x mem) |
| (MOVBstore [off] {sym} ptr (SRWconst (MOV(H|HZ)reg x) [c]) mem) && c <= 8 -> (MOVBstore [off] {sym} ptr (SRWconst <typ.UInt32> x [c]) mem) |
| (MOVBstore [off] {sym} ptr (SRWconst (MOV(W|WZ)reg x) [c]) mem) && c <= 24 -> (MOVBstore [off] {sym} ptr (SRWconst <typ.UInt32> x [c]) mem) |
| (MOVBstoreidx [off] {sym} ptr idx (MOV(B|BZ|H|HZ|W|WZ)reg x) mem) -> (MOVBstoreidx [off] {sym} ptr idx x mem) |
| (MOVHstoreidx [off] {sym} ptr idx (MOV(H|HZ|W|WZ)reg x) mem) -> (MOVHstoreidx [off] {sym} ptr idx x mem) |
| (MOVWstoreidx [off] {sym} ptr idx (MOV(W|WZ)reg x) mem) -> (MOVWstoreidx [off] {sym} ptr idx x mem) |
| (MOVBstoreidx [off] {sym} ptr idx (SRWconst (MOV(H|HZ)reg x) [c]) mem) && c <= 8 -> (MOVBstoreidx [off] {sym} ptr idx (SRWconst <typ.UInt32> x [c]) mem) |
| (MOVBstoreidx [off] {sym} ptr idx (SRWconst (MOV(W|WZ)reg x) [c]) mem) && c <= 24 -> (MOVBstoreidx [off] {sym} ptr idx (SRWconst <typ.UInt32> x [c]) mem) |
| (MOVHBRstore {sym} ptr (MOV(H|HZ|W|WZ)reg x) mem) -> (MOVHBRstore {sym} ptr x mem) |
| (MOVWBRstore {sym} ptr (MOV(W|WZ)reg x) mem) -> (MOVWBRstore {sym} ptr x mem) |
| |
| // Lose W-widening ops fed to compare-W |
| (CMPW x (MOVWreg y)) -> (CMPW x y) |
| (CMPW (MOVWreg x) y) -> (CMPW x y) |
| (CMPWU x (MOVWZreg y)) -> (CMPWU x y) |
| (CMPWU (MOVWZreg x) y) -> (CMPWU x y) |
| |
| (CMP x (MOVDconst [c])) && is16Bit(c) -> (CMPconst x [c]) |
| (CMP (MOVDconst [c]) y) && is16Bit(c) -> (InvertFlags (CMPconst y [c])) |
| (CMPW x (MOVDconst [c])) && is16Bit(c) -> (CMPWconst x [c]) |
| (CMPW (MOVDconst [c]) y) && is16Bit(c) -> (InvertFlags (CMPWconst y [c])) |
| |
| (CMPU x (MOVDconst [c])) && isU16Bit(c) -> (CMPUconst x [c]) |
| (CMPU (MOVDconst [c]) y) && isU16Bit(c) -> (InvertFlags (CMPUconst y [c])) |
| (CMPWU x (MOVDconst [c])) && isU16Bit(c) -> (CMPWUconst x [c]) |
| (CMPWU (MOVDconst [c]) y) && isU16Bit(c) -> (InvertFlags (CMPWUconst y [c])) |
| |
| // A particular pattern seen in cgo code: |
| (AND (MOVDconst [c]) x:(MOVBZload _ _)) -> (ANDconst [c&0xFF] x) |
| (AND x:(MOVBZload _ _) (MOVDconst [c])) -> (ANDconst [c&0xFF] x) |
| |
| // floating point negative abs |
| (FNEG (FABS x)) -> (FNABS x) |
| (FNEG (FNABS x)) -> (FABS x) |
| |
| // floating-point fused multiply-add/sub |
| (FADD (FMUL x y) z) -> (FMADD x y z) |
| (FSUB (FMUL x y) z) -> (FMSUB x y z) |
| (FADDS (FMULS x y) z) -> (FMADDS x y z) |
| (FSUBS (FMULS x y) z) -> (FMSUBS x y z) |
| |
| |
| // The following statements are found in encoding/binary functions UintXX (load) and PutUintXX (store) |
| // and convert the statements in these functions from multiple single byte loads or stores to |
| // the single largest possible load or store. |
| // Some are marked big or little endian based on the order in which the bytes are loaded or stored, |
| // not on the ordering of the machine. These are intended for little endian machines. |
| // To implement for big endian machines, most rules would have to be duplicated but the |
| // resulting rule would be reversed, i. e., MOVHZload on little endian would be MOVHBRload on big endian |
| // and vice versa. |
| // b[0] | b[1]<<8 -> load 16-bit Little endian |
| (OR <t> x0:(MOVBZload [i0] {s} p mem) |
| o1:(SL(W|D)const x1:(MOVBZload [i1] {s} p mem) [8])) |
| && !config.BigEndian |
| && i1 == i0+1 |
| && x0.Uses ==1 && x1.Uses == 1 |
| && o1.Uses == 1 |
| && mergePoint(b, x0, x1) != nil |
| && clobber(x0) && clobber(x1) && clobber(o1) |
| -> @mergePoint(b,x0,x1) (MOVHZload <t> {s} [i0] p mem) |
| |
| // b[0]<<8 | b[1] -> load 16-bit Big endian on Little endian arch. |
| // Use byte-reverse indexed load for 2 bytes. |
| (OR <t> x0:(MOVBZload [i1] {s} p mem) |
| o1:(SL(W|D)const x1:(MOVBZload [i0] {s} p mem) [8])) |
| && !config.BigEndian |
| && i1 == i0+1 |
| && x0.Uses ==1 && x1.Uses == 1 |
| && o1.Uses == 1 |
| && mergePoint(b, x0, x1) != nil |
| && clobber(x0) && clobber(x1) && clobber(o1) |
| -> @mergePoint(b,x0,x1) (MOVHBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) |
| |
| // b[0]<<n+8 | b[1]<<n -> load 16-bit Big endian (where n%8== 0) |
| // Use byte-reverse indexed load for 2 bytes, |
| // then shift left to the correct position. Used to match subrules |
| // from longer rules. |
| (OR <t> s0:(SL(W|D)const x0:(MOVBZload [i1] {s} p mem) [n1]) |
| s1:(SL(W|D)const x1:(MOVBZload [i0] {s} p mem) [n2])) |
| && !config.BigEndian |
| && i1 == i0+1 |
| && n1%8 == 0 |
| && n2 == n1+8 |
| && x0.Uses == 1 && x1.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 |
| && mergePoint(b, x0, x1) != nil |
| && clobber(x0) && clobber(x1) && clobber(s0) && clobber(s1) |
| -> @mergePoint(b,x0,x1) (SLDconst <t> (MOVHBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) [n1]) |
| |
| // b[0] | b[1]<<8 | b[2]<<16 | b[3]<<24 -> load 32-bit Little endian |
| // Use byte-reverse indexed load for 4 bytes. |
| (OR <t> s1:(SL(W|D)const x2:(MOVBZload [i3] {s} p mem) [24]) |
| o0:(OR <t> s0:(SL(W|D)const x1:(MOVBZload [i2] {s} p mem) [16]) |
| x0:(MOVHZload [i0] {s} p mem))) |
| && !config.BigEndian |
| && i2 == i0+2 |
| && i3 == i0+3 |
| && x0.Uses ==1 && x1.Uses == 1 && x2.Uses == 1 |
| && o0.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 |
| && mergePoint(b, x0, x1, x2) != nil |
| && clobber(x0) && clobber(x1) && clobber(x2) |
| && clobber(s0) && clobber(s1) |
| && clobber(o0) |
| -> @mergePoint(b,x0,x1,x2) (MOVWZload <t> {s} [i0] p mem) |
| |
| // b[0]<<24 | b[1]<<16 | b[2]<<8 | b[3] -> load 32-bit Big endian order on Little endian arch |
| // Use byte-reverse indexed load for 4 bytes with computed address. |
| // Could be used to match subrules of a longer rule. |
| (OR <t> s1:(SL(W|D)const x2:(MOVBZload [i0] {s} p mem) [24]) |
| o0:(OR <t> s0:(SL(W|D)const x1:(MOVBZload [i1] {s} p mem) [16]) |
| x0:(MOVHBRload <t> (MOVDaddr <typ.Uintptr> [i2] {s} p) mem))) |
| && !config.BigEndian |
| && i1 == i0+1 |
| && i2 == i0+2 |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 |
| && o0.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 |
| && mergePoint(b, x0, x1, x2) != nil |
| && clobber(x0) && clobber(x1) && clobber(x2) |
| && clobber(s0) && clobber(s1) |
| && clobber(o0) |
| -> @mergePoint(b,x0,x1,x2) (MOVWBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) |
| |
| // b[3] | b[2]<<8 | b[1]<<16 | b[0]<<24 -> load 32-bit Big endian order on Little endian arch |
| // Use byte-reverse indexed load for 4 bytes with computed address. |
| // Could be used to match subrules of a longer rule. |
| (OR <t> x0:(MOVBZload [i3] {s} p mem) |
| o0:(OR <t> s0:(SL(W|D)const x1:(MOVBZload [i2] {s} p mem) [8]) |
| s1:(SL(W|D)const x2:(MOVHBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) [16]))) |
| && !config.BigEndian |
| && i2 == i0+2 |
| && i3 == i0+3 |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 |
| && o0.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 |
| && mergePoint(b, x0, x1, x2) != nil |
| && clobber(x0) && clobber(x1) && clobber(x2) |
| && clobber(s0) && clobber(s1) |
| && clobber(o0) |
| -> @mergePoint(b,x0,x1,x2) (MOVWBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) |
| |
| // b[0]<<56 | b[1]<<48 | b[2]<<40 | b[3]<<32 -> load 32-bit Big endian order on Little endian arch |
| // Use byte-reverse indexed load to for 4 bytes with computed address. |
| // Used to match longer rules. |
| (OR <t> s2:(SLDconst x2:(MOVBZload [i3] {s} p mem) [32]) |
| o0:(OR <t> s1:(SLDconst x1:(MOVBZload [i2] {s} p mem) [40]) |
| s0:(SLDconst x0:(MOVHBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) [48]))) |
| && !config.BigEndian |
| && i2 == i0+2 |
| && i3 == i0+3 |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 |
| && o0.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 && s2.Uses == 1 |
| && mergePoint(b, x0, x1, x2) != nil |
| && clobber(x0) && clobber(x1) && clobber(x2) |
| && clobber(s0) && clobber(s1) && clobber(s2) |
| && clobber(o0) |
| -> @mergePoint(b,x0,x1,x2) (SLDconst <t> (MOVWBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) [32]) |
| |
| // b[3]<<32 | b[2]<<40 | b[1]<<48 | b[0]<<56 -> load 32-bit Big endian order on Little endian arch |
| // Use byte-reverse indexed load for 4 bytes with constant address. |
| // Used to match longer rules. |
| (OR <t> s2:(SLDconst x2:(MOVBZload [i0] {s} p mem) [56]) |
| o0:(OR <t> s1:(SLDconst x1:(MOVBZload [i1] {s} p mem) [48]) |
| s0:(SLDconst x0:(MOVHBRload <t> (MOVDaddr <typ.Uintptr> [i2] {s} p) mem) [32]))) |
| && !config.BigEndian |
| && i1 == i0+1 |
| && i2 == i0+2 |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 |
| && o0.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 && s2.Uses == 1 |
| && mergePoint(b, x0, x1, x2) != nil |
| && clobber(x0) && clobber(x1) && clobber(x2) |
| && clobber(s0) && clobber(s1) && clobber(s2) |
| && clobber(o0) |
| -> @mergePoint(b,x0,x1,x2) (SLDconst <t> (MOVWBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) [32]) |
| |
| // b[0] | b[1]<<8 | b[2]<<16 | b[3]<<24 | b[4] <<32 | b[5]<<40 | b[6]<<48 | b[7]<<56 -> load 64-bit Little endian |
| // Rules with commutative ops and many operands will result in extremely large functions in rewritePPC64, |
| // so matching shorter previously defined subrules is important. |
| // Offset must be multiple of 4 for MOVD |
| (OR <t> s6:(SLDconst x7:(MOVBZload [i7] {s} p mem) [56]) |
| o5:(OR <t> s5:(SLDconst x6:(MOVBZload [i6] {s} p mem) [48]) |
| o4:(OR <t> s4:(SLDconst x5:(MOVBZload [i5] {s} p mem) [40]) |
| o3:(OR <t> s3:(SLDconst x4:(MOVBZload [i4] {s} p mem) [32]) |
| x0:(MOVWZload {s} [i0] p mem))))) |
| && !config.BigEndian |
| && i0%4 == 0 |
| && i4 == i0+4 |
| && i5 == i0+5 |
| && i6 == i0+6 |
| && i7 == i0+7 |
| && x0.Uses == 1 && x4.Uses == 1 && x5.Uses == 1 && x6.Uses ==1 && x7.Uses == 1 |
| && o3.Uses == 1 && o4.Uses == 1 && o5.Uses == 1 |
| && s3.Uses == 1 && s4.Uses == 1 && s5.Uses == 1 && s6.Uses == 1 |
| && mergePoint(b, x0, x4, x5, x6, x7) != nil |
| && clobber(x0) && clobber(x4) && clobber(x5) && clobber(x6) && clobber(x7) |
| && clobber(s3) && clobber(s4) && clobber(s5) && clobber (s6) |
| && clobber(o3) && clobber(o4) && clobber(o5) |
| -> @mergePoint(b,x0,x4,x5,x6,x7) (MOVDload <t> {s} [i0] p mem) |
| |
| // b[7] | b[6]<<8 | b[5]<<16 | b[4]<<24 | b[3]<<32 | b[2]<<40 | b[1]<<48 | b[0]<<56 load 64-bit Big endian ordered bytes on Little endian arch |
| // Use byte-reverse indexed load of 8 bytes. |
| // Rules with commutative ops and many operands can result in extremely large functions in rewritePPC64, |
| // so matching shorter previously defined subrules is important. |
| (OR <t> s0:(SLDconst x0:(MOVBZload [i0] {s} p mem) [56]) |
| o0:(OR <t> s1:(SLDconst x1:(MOVBZload [i1] {s} p mem) [48]) |
| o1:(OR <t> s2:(SLDconst x2:(MOVBZload [i2] {s} p mem) [40]) |
| o2:(OR <t> s3:(SLDconst x3:(MOVBZload [i3] {s} p mem) [32]) |
| x4:(MOVWBRload <t> (MOVDaddr <typ.Uintptr> [i4] p) mem))))) |
| && !config.BigEndian |
| && i1 == i0+1 |
| && i2 == i0+2 |
| && i3 == i0+3 |
| && i4 == i0+4 |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 && x3.Uses == 1 && x4.Uses == 1 |
| && o0.Uses == 1 && o1.Uses == 1 && o2.Uses == 1 |
| && s0.Uses == 1 && s1.Uses == 1 && s2.Uses == 1 && s3.Uses == 1 |
| && mergePoint(b, x0, x1, x2, x3, x4) != nil |
| && clobber(x0) && clobber(x1) && clobber(x2) && clobber(x3) && clobber(x4) |
| && clobber(o0) && clobber(o1) && clobber(o2) |
| && clobber(s0) && clobber(s1) && clobber(s2) && clobber(s3) |
| -> @mergePoint(b,x0,x1,x2,x3,x4) (MOVDBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) |
| |
| // b[0]<<56 | b[1]<<48 | b[2]<<40 | b[3]<<32 | b[4]<<24 | b[5]<<16 | b[6]<<8 | b[7] -> load 64-bit Big endian ordered bytes on Little endian arch |
| // Use byte-reverse indexed load of 8 bytes. |
| // Rules with commutative ops and many operands can result in extremely large functions in rewritePPC64, |
| // so matching shorter previously defined subrules is important. |
| (OR <t> x7:(MOVBZload [i7] {s} p mem) |
| o5:(OR <t> s6:(SLDconst x6:(MOVBZload [i6] {s} p mem) [8]) |
| o4:(OR <t> s5:(SLDconst x5:(MOVBZload [i5] {s} p mem) [16]) |
| o3:(OR <t> s4:(SLDconst x4:(MOVBZload [i4] {s} p mem) [24]) |
| s0:(SL(W|D)const x3:(MOVWBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) [32]))))) |
| && !config.BigEndian |
| && i4 == i0+4 |
| && i5 == i0+5 |
| && i6 == i0+6 |
| && i7 == i0+7 |
| && x3.Uses == 1 && x4.Uses == 1 && x5.Uses == 1 && x6.Uses == 1 && x7.Uses == 1 |
| && o3.Uses == 1 && o4.Uses == 1 && o5.Uses == 1 |
| && s0.Uses == 1 && s4.Uses == 1 && s5.Uses == 1 && s6.Uses == 1 |
| && mergePoint(b, x3, x4, x5, x6, x7) != nil |
| && clobber(x3) && clobber(x4) && clobber(x5) && clobber(x6) && clobber(x7) |
| && clobber(o3) && clobber(o4) && clobber(o5) |
| && clobber(s0) && clobber(s4) && clobber(s5) && clobber(s6) |
| -> @mergePoint(b,x3,x4,x5,x6,x7) (MOVDBRload <t> (MOVDaddr <typ.Uintptr> [i0] {s} p) mem) |
| |
| // 2 byte store Little endian as in: |
| // b[0] = byte(v >> 16) |
| // b[1] = byte(v >> 24) |
| // Added for use in matching longer rules. |
| (MOVBstore [i1] {s} p (SR(W|D)const w [24]) |
| x0:(MOVBstore [i0] {s} p (SR(W|D)const w [16]) mem)) |
| && !config.BigEndian |
| && x0.Uses == 1 |
| && i1 == i0+1 |
| && clobber(x0) |
| -> (MOVHstore [i0] {s} p (SRWconst <typ.UInt16> w [16]) mem) |
| |
| // 2 byte store Little endian as in: |
| // b[0] = byte(v) |
| // b[1] = byte(v >> 8) |
| (MOVBstore [i1] {s} p (SR(W|D)const w [8]) |
| x0:(MOVBstore [i0] {s} p w mem)) |
| && !config.BigEndian |
| && x0.Uses == 1 |
| && i1 == i0+1 |
| && clobber(x0) |
| -> (MOVHstore [i0] {s} p w mem) |
| |
| // 4 byte store Little endian as in: |
| // b[0:1] = uint16(v) |
| // b[2:3] = uint16(v >> 16) |
| (MOVHstore [i1] {s} p (SR(W|D)const w [16]) |
| x0:(MOVHstore [i0] {s} p w mem)) |
| && !config.BigEndian |
| && x0.Uses == 1 |
| && i1 == i0+2 |
| && clobber(x0) |
| -> (MOVWstore [i0] {s} p w mem) |
| |
| // 4 byte store Big endian as in: |
| // b[0] = byte(v >> 24) |
| // b[1] = byte(v >> 16) |
| // b[2] = byte(v >> 8) |
| // b[3] = byte(v) |
| // Use byte-reverse indexed 4 byte store. |
| (MOVBstore [i3] {s} p w |
| x0:(MOVBstore [i2] {s} p (SRWconst w [8]) |
| x1:(MOVBstore [i1] {s} p (SRWconst w [16]) |
| x2:(MOVBstore [i0] {s} p (SRWconst w [24]) mem)))) |
| && !config.BigEndian |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 |
| && i1 == i0+1 && i2 == i0+2 && i3 == i0+3 |
| && clobber(x0) && clobber(x1) && clobber(x2) |
| -> (MOVWBRstore (MOVDaddr <typ.Uintptr> [i0] {s} p) w mem) |
| |
| // The 2 byte store appears after the 4 byte store so that the |
| // match for the 2 byte store is not done first. |
| // If the 4 byte store is based on the 2 byte store then there are |
| // variations on the MOVDaddr subrule that would require additional |
| // rules to be written. |
| |
| // 2 byte store Big endian as in: |
| // b[0] = byte(v >> 8) |
| // b[1] = byte(v) |
| (MOVBstore [i1] {s} p w x0:(MOVBstore [i0] {s} p (SRWconst w [8]) mem)) |
| && !config.BigEndian |
| && x0.Uses == 1 |
| && i1 == i0+1 |
| && clobber(x0) |
| -> (MOVHBRstore (MOVDaddr <typ.Uintptr> [i0] {s} p) w mem) |
| |
| // 8 byte store Little endian as in: |
| // b[0] = byte(v) |
| // b[1] = byte(v >> 8) |
| // b[2] = byte(v >> 16) |
| // b[3] = byte(v >> 24) |
| // b[4] = byte(v >> 32) |
| // b[5] = byte(v >> 40) |
| // b[6] = byte(v >> 48) |
| // b[7] = byte(v >> 56) |
| // Built on previously defined rules |
| // Offset must be multiple of 4 for MOVDstore |
| (MOVBstore [i7] {s} p (SRDconst w [56]) |
| x0:(MOVBstore [i6] {s} p (SRDconst w [48]) |
| x1:(MOVBstore [i5] {s} p (SRDconst w [40]) |
| x2:(MOVBstore [i4] {s} p (SRDconst w [32]) |
| x3:(MOVWstore [i0] {s} p w mem))))) |
| && !config.BigEndian |
| && i0%4 == 0 |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 && x3.Uses == 1 |
| && i4 == i0+4 && i5 == i0+5 && i6 == i0+6 && i7 == i0+7 |
| && clobber(x0) && clobber(x1) && clobber(x2) && clobber(x3) |
| -> (MOVDstore [i0] {s} p w mem) |
| |
| // 8 byte store Big endian as in: |
| // b[0] = byte(v >> 56) |
| // b[1] = byte(v >> 48) |
| // b[2] = byte(v >> 40) |
| // b[3] = byte(v >> 32) |
| // b[4] = byte(v >> 24) |
| // b[5] = byte(v >> 16) |
| // b[6] = byte(v >> 8) |
| // b[7] = byte(v) |
| // Use byte-reverse indexed 8 byte store. |
| (MOVBstore [i7] {s} p w |
| x0:(MOVBstore [i6] {s} p (SRDconst w [8]) |
| x1:(MOVBstore [i5] {s} p (SRDconst w [16]) |
| x2:(MOVBstore [i4] {s} p (SRDconst w [24]) |
| x3:(MOVBstore [i3] {s} p (SRDconst w [32]) |
| x4:(MOVBstore [i2] {s} p (SRDconst w [40]) |
| x5:(MOVBstore [i1] {s} p (SRDconst w [48]) |
| x6:(MOVBstore [i0] {s} p (SRDconst w [56]) mem)))))))) |
| && !config.BigEndian |
| && x0.Uses == 1 && x1.Uses == 1 && x2.Uses == 1 && x3.Uses == 1 && x4.Uses == 1 && x5.Uses == 1 && x6.Uses == 1 |
| && i1 == i0+1 && i2 == i0+2 && i3 == i0+3 && i4 == i0+4 && i5 == i0+5 && i6 == i0+6 && i7 == i0+7 |
| && clobber(x0) && clobber(x1) && clobber(x2) && clobber(x3) && clobber(x4) && clobber(x5) && clobber(x6) |
| -> (MOVDBRstore (MOVDaddr <typ.Uintptr> [i0] {s} p) w mem) |
