diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/_gen/PPC64.rules')
| -rw-r--r-- | src/cmd/compile/internal/ssa/_gen/PPC64.rules | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/_gen/PPC64.rules b/src/cmd/compile/internal/ssa/_gen/PPC64.rules index 6d40687264..0872648bf7 100644 --- a/src/cmd/compile/internal/ssa/_gen/PPC64.rules +++ b/src/cmd/compile/internal/ssa/_gen/PPC64.rules @@ -142,6 +142,16 @@ (ROTLW x (MOVDconst [c])) => (ROTLWconst x [c&31]) (ROTL x (MOVDconst [c])) => (ROTLconst x [c&63]) +// uint8: logical ops with constant -> UI immediates (only if truncation needed). +(AND <t> x (MOVDconst [m])) && t.IsUnsigned() && t.Size() == 1 && m != int64(uint8(m)) => (ANDconst [int64(uint8(m))] x) +(OR <t> x (MOVDconst [m])) && t.IsUnsigned() && t.Size() == 1 && m != int64(uint8(m)) => (ORconst [int64(uint8(m))] x) +(XOR <t> x (MOVDconst [m])) && t.IsUnsigned() && t.Size() == 1 && m != int64(uint8(m)) => (XORconst [int64(uint8(m))] x) + +// uint16: logical ops with constant -> UI immediates (only if truncation needed). +(AND <t> x (MOVDconst [m])) && t.IsUnsigned() && t.Size() == 2 && m != int64(uint16(m)) => (ANDconst [int64(uint16(m))] x) +(OR <t> x (MOVDconst [m])) && t.IsUnsigned() && t.Size() == 2 && m != int64(uint16(m)) => (ORconst [int64(uint16(m))] x) +(XOR <t> x (MOVDconst [m])) && t.IsUnsigned() && t.Size() == 2 && m != int64(uint16(m)) => (XORconst [int64(uint16(m))] x) + // Combine rotate and mask operations (ANDconst [m] (ROTLWconst [r] x)) && isPPC64WordRotateMask(m) => (RLWINM [encodePPC64RotateMask(r,m,32)] x) (AND (MOVDconst [m]) (ROTLWconst [r] x)) && isPPC64WordRotateMask(m) => (RLWINM [encodePPC64RotateMask(r,m,32)] x) |