diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/gen/dec64.rules')
| -rw-r--r-- | src/cmd/compile/internal/ssa/gen/dec64.rules | 137 |
1 files changed, 79 insertions, 58 deletions
diff --git a/src/cmd/compile/internal/ssa/gen/dec64.rules b/src/cmd/compile/internal/ssa/gen/dec64.rules index 4f9e863f90..07607960fa 100644 --- a/src/cmd/compile/internal/ssa/gen/dec64.rules +++ b/src/cmd/compile/internal/ssa/gen/dec64.rules @@ -9,7 +9,6 @@ (Int64Hi (Int64Make hi _)) => hi (Int64Lo (Int64Make _ lo)) => lo - (Load <t> ptr mem) && is64BitInt(t) && !config.BigEndian && t.IsSigned() => (Int64Make (Load <typ.Int32> (OffPtr <typ.Int32Ptr> [4] ptr) mem) @@ -143,6 +142,10 @@ (Trunc64to32 (Int64Make _ lo)) => lo (Trunc64to16 (Int64Make _ lo)) => (Trunc32to16 lo) (Trunc64to8 (Int64Make _ lo)) => (Trunc32to8 lo) +// Most general +(Trunc64to32 x) => (Int64Lo x) +(Trunc64to16 x) => (Trunc32to16 (Int64Lo x)) +(Trunc64to8 x) => (Trunc32to8 (Int64Lo x)) (Lsh32x64 _ (Int64Make (Const32 [c]) _)) && c != 0 => (Const32 [0]) (Rsh32x64 x (Int64Make (Const32 [c]) _)) && c != 0 => (Signmask x) @@ -175,156 +178,174 @@ // turn x64 non-constant shifts to x32 shifts // if high 32-bit of the shift is nonzero, make a huge shift (Lsh64x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Lsh64x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Lsh64x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh64x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh64x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh64x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh64Ux64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh64Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh64Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Lsh32x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Lsh32x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Lsh32x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh32x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh32x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh32x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh32Ux64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh32Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh32Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Lsh16x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Lsh16x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Lsh16x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh16x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh16x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh16x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh16Ux64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh16Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh16Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Lsh8x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Lsh8x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Lsh8x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh8x64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh8x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh8x32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) (Rsh8Ux64 x (Int64Make hi lo)) && hi.Op != OpConst32 => - (Rsh8Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + (Rsh8Ux32 x (Or32 <typ.UInt32> (Zeromask hi) lo)) + +// Most general +(Lsh64x64 x y) => (Lsh64x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh64x64 x y) => (Rsh64x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh64Ux64 x y) => (Rsh64Ux32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Lsh32x64 x y) => (Lsh32x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh32x64 x y) => (Rsh32x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh32Ux64 x y) => (Rsh32Ux32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Lsh16x64 x y) => (Lsh16x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh16x64 x y) => (Rsh16x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh16Ux64 x y) => (Rsh16Ux32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Lsh8x64 x y) => (Lsh8x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh8x64 x y) => (Rsh8x32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) +(Rsh8Ux64 x y) => (Rsh8Ux32 x (Or32 <typ.UInt32> (Zeromask (Int64Hi y)) (Int64Lo y))) + +// Clean up constants a little +(Or32 <typ.UInt32> (Zeromask (Const32 [c])) y) && c == 0 => y +(Or32 <typ.UInt32> (Zeromask (Const32 [c])) y) && c != 0 => (Const32 <typ.UInt32> [-1]) // 64x left shift // result.hi = hi<<s | lo>>(32-s) | lo<<(s-32) // >> is unsigned, large shifts result 0 // result.lo = lo<<s -(Lsh64x32 (Int64Make hi lo) s) => +(Lsh64x32 x s) => (Int64Make (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Lsh32x32 <typ.UInt32> hi s) + (Lsh32x32 <typ.UInt32> (Int64Hi x) s) (Rsh32Ux32 <typ.UInt32> - lo + (Int64Lo x) (Sub32 <typ.UInt32> (Const32 <typ.UInt32> [32]) s))) (Lsh32x32 <typ.UInt32> - lo + (Int64Lo x) (Sub32 <typ.UInt32> s (Const32 <typ.UInt32> [32])))) - (Lsh32x32 <typ.UInt32> lo s)) -(Lsh64x16 (Int64Make hi lo) s) => + (Lsh32x32 <typ.UInt32> (Int64Lo x) s)) +(Lsh64x16 x s) => (Int64Make (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Lsh32x16 <typ.UInt32> hi s) + (Lsh32x16 <typ.UInt32> (Int64Hi x) s) (Rsh32Ux16 <typ.UInt32> - lo + (Int64Lo x) (Sub16 <typ.UInt16> (Const16 <typ.UInt16> [32]) s))) (Lsh32x16 <typ.UInt32> - lo + (Int64Lo x) (Sub16 <typ.UInt16> s (Const16 <typ.UInt16> [32])))) - (Lsh32x16 <typ.UInt32> lo s)) -(Lsh64x8 (Int64Make hi lo) s) => + (Lsh32x16 <typ.UInt32> (Int64Lo x) s)) +(Lsh64x8 x s) => (Int64Make (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Lsh32x8 <typ.UInt32> hi s) + (Lsh32x8 <typ.UInt32> (Int64Hi x) s) (Rsh32Ux8 <typ.UInt32> - lo + (Int64Lo x) (Sub8 <typ.UInt8> (Const8 <typ.UInt8> [32]) s))) (Lsh32x8 <typ.UInt32> - lo + (Int64Lo x) (Sub8 <typ.UInt8> s (Const8 <typ.UInt8> [32])))) - (Lsh32x8 <typ.UInt32> lo s)) + (Lsh32x8 <typ.UInt32> (Int64Lo x) s)) // 64x unsigned right shift // result.hi = hi>>s // result.lo = lo>>s | hi<<(32-s) | hi>>(s-32) // >> is unsigned, large shifts result 0 -(Rsh64Ux32 (Int64Make hi lo) s) => +(Rsh64Ux32 x s) => (Int64Make - (Rsh32Ux32 <typ.UInt32> hi s) + (Rsh32Ux32 <typ.UInt32> (Int64Hi x) s) (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Rsh32Ux32 <typ.UInt32> lo s) + (Rsh32Ux32 <typ.UInt32> (Int64Lo x) s) (Lsh32x32 <typ.UInt32> - hi + (Int64Hi x) (Sub32 <typ.UInt32> (Const32 <typ.UInt32> [32]) s))) (Rsh32Ux32 <typ.UInt32> - hi + (Int64Hi x) (Sub32 <typ.UInt32> s (Const32 <typ.UInt32> [32]))))) -(Rsh64Ux16 (Int64Make hi lo) s) => +(Rsh64Ux16 x s) => (Int64Make - (Rsh32Ux16 <typ.UInt32> hi s) + (Rsh32Ux16 <typ.UInt32> (Int64Hi x) s) (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Rsh32Ux16 <typ.UInt32> lo s) + (Rsh32Ux16 <typ.UInt32> (Int64Lo x) s) (Lsh32x16 <typ.UInt32> - hi + (Int64Hi x) (Sub16 <typ.UInt16> (Const16 <typ.UInt16> [32]) s))) (Rsh32Ux16 <typ.UInt32> - hi + (Int64Hi x) (Sub16 <typ.UInt16> s (Const16 <typ.UInt16> [32]))))) -(Rsh64Ux8 (Int64Make hi lo) s) => +(Rsh64Ux8 x s) => (Int64Make - (Rsh32Ux8 <typ.UInt32> hi s) + (Rsh32Ux8 <typ.UInt32> (Int64Hi x) s) (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Rsh32Ux8 <typ.UInt32> lo s) + (Rsh32Ux8 <typ.UInt32> (Int64Lo x) s) (Lsh32x8 <typ.UInt32> - hi + (Int64Hi x) (Sub8 <typ.UInt8> (Const8 <typ.UInt8> [32]) s))) (Rsh32Ux8 <typ.UInt32> - hi + (Int64Hi x) (Sub8 <typ.UInt8> s (Const8 <typ.UInt8> [32]))))) // 64x signed right shift // result.hi = hi>>s // result.lo = lo>>s | hi<<(32-s) | (hi>>(s-32))&zeromask(s>>5) // hi>>(s-32) is signed, large shifts result 0/-1 -(Rsh64x32 (Int64Make hi lo) s) => +(Rsh64x32 x s) => (Int64Make - (Rsh32x32 <typ.UInt32> hi s) + (Rsh32x32 <typ.UInt32> (Int64Hi x) s) (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Rsh32Ux32 <typ.UInt32> lo s) + (Rsh32Ux32 <typ.UInt32> (Int64Lo x) s) (Lsh32x32 <typ.UInt32> - hi + (Int64Hi x) (Sub32 <typ.UInt32> (Const32 <typ.UInt32> [32]) s))) (And32 <typ.UInt32> (Rsh32x32 <typ.UInt32> - hi + (Int64Hi x) (Sub32 <typ.UInt32> s (Const32 <typ.UInt32> [32]))) (Zeromask (Rsh32Ux32 <typ.UInt32> s (Const32 <typ.UInt32> [5])))))) -(Rsh64x16 (Int64Make hi lo) s) => +(Rsh64x16 x s) => (Int64Make - (Rsh32x16 <typ.UInt32> hi s) + (Rsh32x16 <typ.UInt32> (Int64Hi x) s) (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Rsh32Ux16 <typ.UInt32> lo s) + (Rsh32Ux16 <typ.UInt32> (Int64Lo x) s) (Lsh32x16 <typ.UInt32> - hi + (Int64Hi x) (Sub16 <typ.UInt16> (Const16 <typ.UInt16> [32]) s))) (And32 <typ.UInt32> (Rsh32x16 <typ.UInt32> - hi + (Int64Hi x) (Sub16 <typ.UInt16> s (Const16 <typ.UInt16> [32]))) (Zeromask (ZeroExt16to32 (Rsh16Ux32 <typ.UInt16> s (Const32 <typ.UInt32> [5]))))))) -(Rsh64x8 (Int64Make hi lo) s) => +(Rsh64x8 x s) => (Int64Make - (Rsh32x8 <typ.UInt32> hi s) + (Rsh32x8 <typ.UInt32> (Int64Hi x) s) (Or32 <typ.UInt32> (Or32 <typ.UInt32> - (Rsh32Ux8 <typ.UInt32> lo s) + (Rsh32Ux8 <typ.UInt32> (Int64Lo x) s) (Lsh32x8 <typ.UInt32> - hi + (Int64Hi x) (Sub8 <typ.UInt8> (Const8 <typ.UInt8> [32]) s))) (And32 <typ.UInt32> (Rsh32x8 <typ.UInt32> - hi + (Int64Hi x) (Sub8 <typ.UInt8> s (Const8 <typ.UInt8> [32]))) (Zeromask (ZeroExt8to32 |