[go] cmd/compile: (mips64x) optimize float32(abs|sqrt64(float64(x)))

[Julian Zhu (Gerrit)]

Julian Zhu submitted the change

Change information

Commit message:

cmd/compile: (mips64x) optimize float32(abs|sqrt64(float64(x)))

Absorb unnecessary conversion between float32 and float64
if both src and dst are 32 bit.

Ref: CL 733621
Updates #75463

Change-Id: I439f92aa3d940fa4979e76845c0893e43bf584af

Reviewed-on: https://go-review.googlesource.com/c/go/+/739520

Reviewed-by: David Chase <drc...@google.com>

Reviewed-by: Dmitri Shuralyov <dmit...@google.com>

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Joel Sing <jo...@sing.id.au>

Files:

• M src/cmd/compile/internal/mips64/ssa.go
• M src/cmd/compile/internal/ssa/_gen/MIPS64.rules
• M src/cmd/compile/internal/ssa/_gen/MIPS64Ops.go
• M src/cmd/compile/internal/ssa/opGen.go
• M src/cmd/compile/internal/ssa/rewriteMIPS64.go

Change size: M

Delta: 5 files changed, 55 insertions(+), 0 deletions(-)

Branch: refs/heads/master

Submit Requirements:

• Code-Review: +2 by David Chase, +1 by Dmitri Shuralyov, +2 by Joel Sing
• TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

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Gerrit

Gerrit-MessageType: merged

Gerrit-Project: go

Gerrit-Branch: master

Gerrit-Change-Id: I439f92aa3d940fa4979e76845c0893e43bf584af

Gerrit-Change-Number: 739520

Gerrit-PatchSet: 3

Gerrit-Owner: Julian Zhu <jz53...@gmail.com>

Gerrit-Reviewer: David Chase <drc...@google.com>

Gerrit-Reviewer: Dmitri Shuralyov <dmit...@google.com>

Gerrit-Reviewer: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Gerrit-Reviewer: Joel Sing <jo...@sing.id.au>

Gerrit-Reviewer: Julian Zhu <jz53...@gmail.com>

Gerrit-CC: Dmitri Shuralyov <dmit...@golang.org>

Gerrit-CC: Gopher Robot <go...@golang.org>