tree fffc697b521f40031c471904fc33d5cb4dda65d4
parent a32739aadf0c7a65fcd5d5b6d0a0d206bff24a4f
author Cherry Zhang <cherryyz@google.com> 1560096781 -0400
committer Ian Lance Taylor <iant@golang.org> 1560198882 +0000

compiler: use gcWriteBarrier for pointer-shaped struct/array

If a struct/array is pointer-shaped (i.e. having a single field
that is pointer-shaped), we can use gcWriteBarrier instead of
typedmemmove for the write barrier.

Change-Id: Ic782ed35d8bf8df23e6c5487a78f83c420ff0659
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181539
Reviewed-by: Ian Lance Taylor <iant@golang.org>