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6892658: C2 should optimize some stringbuilder patterns

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Reviewed-by: kvn, twisti
This commit is contained in:
Tom Rodriguez 2009-11-12 09:24:21 -08:00
parent 63cc2211ed
commit 9db2092b1b
35 changed files with 2245 additions and 115 deletions
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7
hotspot/src/share/vm/memory/universe.cpp
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@ -67,6 +67,8 @@ typeArrayOop Universe::_the_empty_int_array = NULL;
objArrayOop Universe::_the_empty_system_obj_array = NULL;
objArrayOop Universe::_the_empty_class_klass_array = NULL;
objArrayOop Universe::_the_array_interfaces_array = NULL;
oop Universe::_the_null_string = NULL;
oop Universe::_the_min_jint_string = NULL;
LatestMethodOopCache* Universe::_finalizer_register_cache = NULL;
LatestMethodOopCache* Universe::_loader_addClass_cache = NULL;
ActiveMethodOopsCache* Universe::_reflect_invoke_cache = NULL;
@ -187,6 +189,8 @@ void Universe::oops_do(OopClosure* f, bool do_all) {
f->do_oop((oop*)&_the_empty_system_obj_array);
f->do_oop((oop*)&_the_empty_class_klass_array);
f->do_oop((oop*)&_the_array_interfaces_array);
f->do_oop((oop*)&_the_null_string);
f->do_oop((oop*)&_the_min_jint_string);
_finalizer_register_cache->oops_do(f);
_loader_addClass_cache->oops_do(f);
_reflect_invoke_cache->oops_do(f);
@ -289,6 +293,9 @@ void Universe::genesis(TRAPS) {
klassOop ok = SystemDictionary::object_klass();
_the_null_string = StringTable::intern("null", CHECK);
_the_min_jint_string = StringTable::intern("-2147483648", CHECK);
if (UseSharedSpaces) {
// Verify shared interfaces array.
assert(_the_array_interfaces_array->obj_at(0) ==