tree 650c10733fa0e92bd81620fe0b9c0793ff264fe1
parent d88ed741677c13d8591e24a5280e6a3682ecde01
author Cherry Zhang <cherryyz@google.com> 1499702393 -0400
committer Cherry Zhang <cherryyz@google.com> 1499778071 +0000

gollvm: delete dead expr's instructions before visiting children

Dead expression's instructions may use values defined in the
children. Uses need to be deleted before deleting definition.
Therefore deleting these instructions before visiting children.

Change-Id: Ieb66cec101889b88d4e04543638ae8ace3d4788d
Reviewed-on: https://go-review.googlesource.com/47931
Reviewed-by: Than McIntosh <thanm@google.com>