tree b739180c289d052c18c0ec50c139f490e50d6955
parent aac0b97cf93b20107ae688cd90e54cdc211fd043
author Michael Matloob <matloob@golang.org> 1560353256 -0400
committer Michael Matloob <matloob@golang.org> 1561667973 +0000

go/packages: avoid loading some packages in when computing overlays

In some cases, it's safe to avoid loading additional packages
when computing overlays. However it's not always safe to do so.
Avoid some unnecessary loads when it's completely safe to do so.

Updates golang/go#32538

Change-Id: Ie12204735940a540c9b3f29742f8479bcab5f077
Reviewed-on: https://go-review.googlesource.com/c/tools/+/181917
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>