From: David Chase <drchase@google.com>
Date: Wed, 3 Dec 2025 22:11:00 +0000 (-0500)
Subject: [dev.simd] internal/buildcfg: turn GOEXPERIMENT=simd back on
X-Git-Tag: go1.26rc1~1^2~45^2~6
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=2b91d96941;p=gostls13.git

[dev.simd] internal/buildcfg: turn GOEXPERIMENT=simd back on

Turn the experiment back on by default on the dev.simd branch, for
the ease of experimenting and development.

Change-Id: I89d6d9b616e620d2be21bb807aaf8b6de2788a97
Reviewed-on: https://go-review.googlesource.com/c/go/+/726660
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
---

diff --git a/src/internal/buildcfg/exp.go b/src/internal/buildcfg/exp.go
index df41f79338..2b6efe30a6 100644
--- a/src/internal/buildcfg/exp.go
+++ b/src/internal/buildcfg/exp.go
@@ -84,6 +84,7 @@ func ParseGOEXPERIMENT(goos, goarch, goexp string) (*ExperimentFlags, error) {
 		RegabiWrappers:        regabiSupported,
 		RegabiArgs:            regabiSupported,
 		Dwarf5:                dwarf5Supported,
+		SIMD:                  goarch == "amd64", // TODO: remove this (default to false) when dev.simd is merged
 		RandomizedHeapBase64:  true,
 		SizeSpecializedMalloc: true,
 		GreenTeaGC:            true,