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6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)

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Reviewed-by: kvn, rasbold
This commit is contained in:
Tom Rodriguez 2007-12-05 09:01:00 -08:00
parent 5fa349cc42
commit 10c473e425
16 changed files with 540 additions and 67 deletions
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16
hotspot/src/share/vm/runtime/arguments.cpp
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@ -1254,6 +1254,22 @@ void Arguments::set_bytecode_flags() {
// Aggressive optimization flags -XX:+AggressiveOpts
void Arguments::set_aggressive_opts_flags() {
#ifdef COMPILER2
if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) {
if (FLAG_IS_DEFAULT(EliminateAutoBox)) {
FLAG_SET_DEFAULT(EliminateAutoBox, true);
}
if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) {
FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000);
}
// Feed the cache size setting into the JDK
char buffer[1024];
sprintf(buffer, "java.lang.Integer.IntegerCache.high=%d", AutoBoxCacheMax);
add_property(buffer);
}
#endif
if (AggressiveOpts) {
NOT_WINDOWS(
// No measured benefit on Windows