[dev.simd] internal/buildcfg: enable SIMD GOEXPERIMENT for amd64

Since we are developing and testing this, the default is on.
This may still cause us a little headache when developing
on other-architecture laptops.

Change-Id: I9e9e5ea4ff2312c0c8385386b5012370f00dbfbd
Reviewed-on: https://go-review.googlesource.com/c/go/+/675735
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>

diff --git a/src/internal/buildcfg/exp.go b/src/internal/buildcfg/exp.go
index e36ec08a5b0232656bd3f45b61ba2079d0da813f..17a02415c42b075d49cbd3245c9f91697ad88a39 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) {
                AliasTypeParams: true,
                SwissMap:        true,
                SyncHashTrieMap: true,
+               SIMD:            goarch == "amd64", // TODO remove this (default to false) when dev.simd is merged
                Dwarf5:          dwarf5Supported,
        }