tree 738ba965a552ac0e4814cb1131ef0dd96ae14142
parent 334b5c3d0d5d84242b4528241c759789e532ce08
author Mathieu Chartier <mathieuc@google.com> 1478733507 -0800
committer Mathieu Chartier <mathieuc@google.com> 1478735973 -0800

Avoid read barriers for inlined check cast

Avoiding read barriers improves speed and reduces code size.

Doing this can never result in false positives, only false negatives.
These false negatives are handled correcly by rechecking in the
entrypoint.

Ritzperf code size for CC:
arm32: 13439400->13300136 (-1.04%)
arm64: 16405120->16253568 (-0.92%)

Perf: TODO

Bug: 29516974
Bug: 12687968

Test: test-art-host, run ritzperf both with CC

Change-Id: Ie024e0b1e8ee415781fb73e8029e87e8a5318f86