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view visualizer/build.xml @ 11825:463f51256c86
AMD64HotSpot: emit jump to IC miss handler directly instead of emitting it inside verfied_entry
for empty methods we emitted something like this if a inline cache is needed:
prefix:
00: < IC check >
...
0b: jne <ic_miss_call>
11: nop
...
verified_entry:
20: ret
ic_miss_call:
21: jmp <entry of runtime function>
when a method is deoptimized, HotSpot patches the verified_entry (0x20) with a
jump to a stub that handles call-sites that has been made non-entrant. since this jump
is 5 bytes long, it will overwrite ic_miss_call and blow up every caller that
calls this method via the unverified entry (prefix).
the fix is to emit the jump to the runtime function inside the unverfied entry:
prefix:
00: < IC check >
...
0b: je <verified_entry>
11: jeq <entry of runtime function>
16: nop
...
verified_entry:
20: ret
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Mon, 30 Sep 2013 09:32:18 +0200 |
parents | ab4a47b6a187 |
children |
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<?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="Graal Visualizer" basedir="."> <description>Builds the module suite Graal Visualizer.</description> <import file="nbproject/build-impl.xml"/> <target name="build-launchers" depends="suite.build-launchers"> <!-- Drop memory presets (-Xms, -Xmx) from default_options of packaged builds and let the executing VM choose reasonable defaults --> <replaceregexp file="${build.launcher.dir}/etc/${app.name}.conf" byline="true" match="^default_options=.*" replace='default_options="--branding graalvisualizer"' /> </target> <!-- Local (environment-specific) extensions/modifications to the build --> <import file="build-local.xml" optional="true" /> </project>