tree 2f3961518e95d2dfae188c04e34cde90cc5def79
parent 0dd76cd3f09f495a1b9a0e4f8712c09ff885c6fd
author Vladimir Marko <vmarko@google.com> 1429977645 +0100
committer Vladimir Marko <vmarko@google.com> 1430240508 +0100

Quick: Avoid unnecessary GVN work in release builds.

In GVN's post-processing phase, compare LVNs only in debug
builds as they should be equal anyway.

Remove the Gate() from GVN cleanup pass and remove the
DCHECK() from MIRGraph::GlobalValueNumberingCleanup()
to make it a no-op if the GVN didn't run.

Bug: 16398693

(cherry picked from commit f725550c8df90f8ec07395d9be5177a4be591c12)

Change-Id: I518fba4a06c8d6d5ab16a6c122dc680b6d44814b