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| author | Lynn Boger <laboger@linux.vnet.ibm.com> | 2020-09-23 11:06:39 -0400 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2020-09-28 18:13:48 +0000 |
| commit | a424f6e45e29960c933a7ccc1cd8fc9bb2766f15 (patch) | |
| tree | ae2e0f78c969a9c6b4fc62b33a7a27974d590943 /src/cmd/compile/internal/ppc64 | |
| parent | 874b3132a84cf76da6a48978826c04c380a37a50 (diff) | |
| download | go-a424f6e45e29960c933a7ccc1cd8fc9bb2766f15.tar.gz go-a424f6e45e29960c933a7ccc1cd8fc9bb2766f15.zip | |
cmd/asm,cmd/compile,cmd/internal/obj/ppc64: add extswsli support on power9
This adds support for the extswsli instruction which combines
extsw followed by a shift.
New benchmark demonstrates the improvement:
name old time/op new time/op delta
ExtShift 1.34µs ± 0% 1.30µs ± 0% -3.15% (p=0.057 n=4+3)
Change-Id: I21b410676fdf15d20e0cbbaa75d7c6dcd3bbb7b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/257017
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@gmail.com>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
Diffstat (limited to 'src/cmd/compile/internal/ppc64')
| -rw-r--r-- | src/cmd/compile/internal/ppc64/ssa.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/ppc64/ssa.go b/src/cmd/compile/internal/ppc64/ssa.go index 4a83a0bdd7..a5fbdaffba 100644 --- a/src/cmd/compile/internal/ppc64/ssa.go +++ b/src/cmd/compile/internal/ppc64/ssa.go @@ -677,7 +677,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) { p.From.Reg = v.Args[0].Reg() case ssa.OpPPC64ADDconst, ssa.OpPPC64ANDconst, ssa.OpPPC64ORconst, ssa.OpPPC64XORconst, - ssa.OpPPC64SRADconst, ssa.OpPPC64SRAWconst, ssa.OpPPC64SRDconst, ssa.OpPPC64SRWconst, ssa.OpPPC64SLDconst, ssa.OpPPC64SLWconst: + ssa.OpPPC64SRADconst, ssa.OpPPC64SRAWconst, ssa.OpPPC64SRDconst, ssa.OpPPC64SRWconst, ssa.OpPPC64SLDconst, ssa.OpPPC64SLWconst, ssa.OpPPC64EXTSWSLconst: p := s.Prog(v.Op.Asm()) p.Reg = v.Args[0].Reg() p.From.Type = obj.TYPE_CONST |