A code-gen bug was found in 15.3.2 (VC++ 2017 Update 3.2) that causes
test failures due to one loop being skipped. Attempts to disable
optimizations for just the affected function failed so optimizations
must be disabled at the end of the source file, which seems to cause all
template functions and compiler generated functions to have
optimizations disabled. A VS bug has been filed and cross-linked.

BUG=759402

Change-Id: Ida765a47234a63bad48e6a4e910f3b82919d6be9
Reviewed-on: https://chromium-review.googlesource.com/647313Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>