Enable compiler optimization in inflate_fast on ARM

Generate optimized code that will help ARMv8 chips (between 2
to 10% perf gain on ARMv8 little/big cores) at the expense of
a small perf regression on older chips (i.e. ARMv7).

Bug: 772870
Change-Id: Ifc47870724da9790c944f76fedcc225d0a896caf
Reviewed-on: https://chromium-review.googlesource.com/976521
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Reviewed-by: Chris Blume <cblume@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#546016}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: ffc960a39d26fda610e0023667b2465118b8580a
1 file changed