tree b5348e1deac7124bdcb8ccc94340c5387b1ed2fb
parent 7a8e10be0ddb8909ce25a264d03b24cee4df60cc
author Cherry Zhang <cherryyz@google.com> 1562770401 -0400
committer Ian Lance Taylor <iant@golang.org> 1562781370 +0000

compiler: add break label in 1,2-case select statement lowering

CL 184998 added optimizations for one- and two-case select
statements. But it didn't handle break statement in the select
case correctly. Specifically, it didn't add the label definition,
so it could result in a dangling goto. This CL fixes this, by
adding the label definition.

A test case is CL 185520.

Change-Id: I98d30f599f1c4c71b91724ac394b8761d1b70b7d
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/185519
Reviewed-by: Ian Lance Taylor <iant@golang.org>