Mercurial > hg > truffle
view visualizer/Bytecodes/build.xml @ 9126:bc26f978b0ce
HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly
don't use the (wrong) cached value, but ask the runtime on each request.
Fixes regression on xml.* benchmarks @ specjvm2008. The problem was:
After the constructor of Object was deoptimized due to an assumption violation,
it was recompiled again after some time. However, on recompilation, the value
of hasFinalizeSubclass for the class was not updated and it was compiled again
with a, now wrong, assumption, which then triggers deoptimization again.
This was repeated until it hit the recompilation limit (defined by
PerMethodRecompilationCutoff), and therefore only executed by the interpreter
from now on, causing the performance regression.
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Mon, 15 Apr 2013 19:54:58 +0200 |
parents | 35cca763f498 |
children |
line wrap: on
line source
<?xml version="1.0" encoding="UTF-8"?> <!-- You may freely edit this file. See harness/README in the NetBeans platform --> <!-- for some information on what you could do (e.g. targets to override). --> <!-- If you delete this file and reopen the project it will be recreated. --> <project name="com.sun.hotspot.igv.bytecodes" default="netbeans" basedir="."> <description>Builds, tests, and runs the project com.sun.hotspot.igv.bytecodes.</description> <import file="nbproject/build-impl.xml"/> </project>