[go] simd/archsimd: correct type and instruction for SaturateToUint8

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Cherry Mui (Gerrit)

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Dec 19, 2025, 5:39:23 PM (2 days ago) Dec 19

to goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, David Chase, Go LUCI, golang-co...@googlegroups.com

Cherry Mui submitted the change

Change information

Commit message:

simd/archsimd: correct type and instruction for SaturateToUint8

It should be defined on unsigned types, not signed types, and use
unsigned conversion instructions.

Change-Id: I49694ccdf1d331cfde88591531c358d9886e83e6

Reviewed-on: https://go-review.googlesource.com/c/go/+/731500

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

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

Files:

M src/cmd/compile/internal/amd64/simdssa.go
M src/cmd/compile/internal/ssa/_gen/simdAMD64.rules
M src/cmd/compile/internal/ssa/_gen/simdAMD64ops.go
M src/cmd/compile/internal/ssa/_gen/simdgenericOps.go
M src/cmd/compile/internal/ssa/opGen.go
M src/cmd/compile/internal/ssa/rewriteAMD64.go
M src/cmd/compile/internal/ssagen/simdintrinsics.go
M src/simd/archsimd/_gen/simdgen/ops/Converts/go.yaml
M src/simd/archsimd/ops_amd64.go

Change size: L

Delta: 9 files changed, 805 insertions(+), 129 deletions(-)

Branch: refs/heads/master

Submit Requirements:

Code-Review: +2 by David Chase
TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

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