[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 df41f79338841fb6a88d45b842625c6388c0dd61..2b6efe30a6cfe0e2061adfc07bb6f84f53942194 100644 (file)
--- 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,