commit 1ceb37c75544c5285fb87f27e1d9fa7261ced60c
author Mathieu Chartier <mathieuc@google.com> Tue Aug 30 10:23:01 2016 -0700
committer Mathieu Chartier <mathieuc@google.com> Mon Oct 24 10:48:23 2016 -0700
tree a2c672170bb8424a148298706c6fd71d892a1b6e
parent 3667e26de4856cccf24bcbab54ad3349a05267c0

Remove unnecessary load class for new instance

Remove the load class for new instance if the load class has only one
use and can not throw. Previously many were not removed due to
MarkInDexCache nulling out the environment of the HLoadClass and
causing CanMoveClinitCheck to fail.

Also keep track of initialized HLoadClass and always remove clinit
checks for these.

Added checker regression test.

Code size savings: ARM64 CC boot.oat: 47896936 -> 47642488 (-0.53%)
Savings from IsInitialized optimization: 65984 bytes

Performance unmeasured, probably faster due to removing unnecessary
work.

Test: test-art-host with CC baker

Bug: 29516974

Change-Id: I43358762ffb380ebe7e6518d0d440a5e1cc03b61