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| author | Josh Bleecher Snyder <josharian@gmail.com> | 2020-04-23 19:22:26 -0700 |
|---|---|---|
| committer | Josh Bleecher Snyder <josharian@gmail.com> | 2020-04-24 16:44:20 +0000 |
| commit | 67a8660b5acd570530f3777727d67e739e54cb2b (patch) | |
| tree | 4a2550a3801fcb5bf4e8a341309a8315ab46ff24 /src/cmd/compile/internal/ssa/rewriteS390X.go | |
| parent | 3a37fd4010dc20403d642e2c628cb0656a4fb968 (diff) | |
| download | go-67a8660b5acd570530f3777727d67e739e54cb2b.tar.gz go-67a8660b5acd570530f3777727d67e739e54cb2b.zip | |
cmd/compile: CSE the RHS of rewrite rules
Keep track of all expressions encountered while
generating a rewrite result, and re-use them whenever possible.
Named expressions may still be used for clarity when desired.
Change-Id: I640dca108763eb8baeff8f9a4169300af3445b82
Reviewed-on: https://go-review.googlesource.com/c/go/+/229800
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martà <mvdan@mvdan.cc>
Diffstat (limited to 'src/cmd/compile/internal/ssa/rewriteS390X.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/rewriteS390X.go | 44 |
1 files changed, 19 insertions, 25 deletions
diff --git a/src/cmd/compile/internal/ssa/rewriteS390X.go b/src/cmd/compile/internal/ssa/rewriteS390X.go index a7f6b3cd9c..d104c4e54b 100644 --- a/src/cmd/compile/internal/ssa/rewriteS390X.go +++ b/src/cmd/compile/internal/ssa/rewriteS390X.go @@ -18537,18 +18537,16 @@ func rewriteValueS390X_OpSelect1(v *Value) bool { v0 := b.NewValue0(v.Pos, OpS390XADDE, types.NewTuple(typ.UInt64, types.TypeFlags)) v1 := b.NewValue0(v.Pos, OpS390XMOVDconst, typ.UInt64) v1.AuxInt = 0 - v2 := b.NewValue0(v.Pos, OpS390XMOVDconst, typ.UInt64) - v2.AuxInt = 0 - v3 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) - v4 := b.NewValue0(v.Pos, OpS390XADDE, types.NewTuple(typ.UInt64, types.TypeFlags)) - v5 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) - v6 := b.NewValue0(v.Pos, OpS390XADDCconst, types.NewTuple(typ.UInt64, types.TypeFlags)) - v6.AuxInt = -1 - v6.AddArg(c) - v5.AddArg(v6) - v4.AddArg3(x, y, v5) - v3.AddArg(v4) - v0.AddArg3(v1, v2, v3) + v2 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) + v3 := b.NewValue0(v.Pos, OpS390XADDE, types.NewTuple(typ.UInt64, types.TypeFlags)) + v4 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) + v5 := b.NewValue0(v.Pos, OpS390XADDCconst, types.NewTuple(typ.UInt64, types.TypeFlags)) + v5.AuxInt = -1 + v5.AddArg(c) + v4.AddArg(v5) + v3.AddArg3(x, y, v4) + v2.AddArg(v3) + v0.AddArg3(v1, v1, v2) v.AddArg(v0) return true } @@ -18566,19 +18564,15 @@ func rewriteValueS390X_OpSelect1(v *Value) bool { v1 := b.NewValue0(v.Pos, OpS390XSUBE, types.NewTuple(typ.UInt64, types.TypeFlags)) v2 := b.NewValue0(v.Pos, OpS390XMOVDconst, typ.UInt64) v2.AuxInt = 0 - v3 := b.NewValue0(v.Pos, OpS390XMOVDconst, typ.UInt64) - v3.AuxInt = 0 - v4 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) - v5 := b.NewValue0(v.Pos, OpS390XSUBE, types.NewTuple(typ.UInt64, types.TypeFlags)) - v6 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) - v7 := b.NewValue0(v.Pos, OpS390XSUBC, types.NewTuple(typ.UInt64, types.TypeFlags)) - v8 := b.NewValue0(v.Pos, OpS390XMOVDconst, typ.UInt64) - v8.AuxInt = 0 - v7.AddArg2(v8, c) - v6.AddArg(v7) - v5.AddArg3(x, y, v6) - v4.AddArg(v5) - v1.AddArg3(v2, v3, v4) + v3 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) + v4 := b.NewValue0(v.Pos, OpS390XSUBE, types.NewTuple(typ.UInt64, types.TypeFlags)) + v5 := b.NewValue0(v.Pos, OpSelect1, types.TypeFlags) + v6 := b.NewValue0(v.Pos, OpS390XSUBC, types.NewTuple(typ.UInt64, types.TypeFlags)) + v6.AddArg2(v2, c) + v5.AddArg(v6) + v4.AddArg3(x, y, v5) + v3.AddArg(v4) + v1.AddArg3(v2, v2, v3) v0.AddArg(v1) v.AddArg(v0) return true |