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| author | Joel Sing <joel@sing.id.au> | 2020-03-02 04:25:54 +1100 |
|---|---|---|
| committer | Joel Sing <joel@sing.id.au> | 2020-03-03 12:04:46 +0000 |
| commit | c9ece81cc8c1a81ebdebcf6dfc13ebf5c4cbdb61 (patch) | |
| tree | f613d6e93d85e55180e4cf129f13345beab48dfa /src/cmd/compile/internal/ssa/rewriteRISCV64.go | |
| parent | d28b8524a4d5d86d7b1e2df790abff6244de2a00 (diff) | |
| download | go-c9ece81cc8c1a81ebdebcf6dfc13ebf5c4cbdb61.tar.gz go-c9ece81cc8c1a81ebdebcf6dfc13ebf5c4cbdb61.zip | |
cmd/compile: absorb SNEZ into branch on riscv64
Change-Id: I55fd93843a7fb574a7dd66ebb87fdd96e944d555
Reviewed-on: https://go-review.googlesource.com/c/go/+/221682
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/cmd/compile/internal/ssa/rewriteRISCV64.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/rewriteRISCV64.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/rewriteRISCV64.go b/src/cmd/compile/internal/ssa/rewriteRISCV64.go index b363b10ad7..6b3f4f70b5 100644 --- a/src/cmd/compile/internal/ssa/rewriteRISCV64.go +++ b/src/cmd/compile/internal/ssa/rewriteRISCV64.go @@ -4387,6 +4387,15 @@ func rewriteValueRISCV64_OpZeroExt8to64(v *Value) bool { } func rewriteBlockRISCV64(b *Block) bool { switch b.Kind { + case BlockRISCV64BNE: + // match: (BNE (SNEZ x) yes no) + // result: (BNE x yes no) + for b.Controls[0].Op == OpRISCV64SNEZ { + v_0 := b.Controls[0] + x := v_0.Args[0] + b.resetWithControl(BlockRISCV64BNE, x) + return true + } case BlockIf: // match: (If cond yes no) // result: (BNE cond yes no) |