archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-22 03:54:33 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6892658: C2 should optimize some stringbuilder patterns

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

23
hotspot/src/share/vm/ci/ciEnv.cpp
View file

@ -46,6 +46,9 @@ ciInstanceKlass* ciEnv::_Throwable;
ciInstanceKlass* ciEnv::_Thread;
ciInstanceKlass* ciEnv::_OutOfMemoryError;
ciInstanceKlass* ciEnv::_String;
ciInstanceKlass* ciEnv::_StringBuffer;
ciInstanceKlass* ciEnv::_StringBuilder;
ciInstanceKlass* ciEnv::_Integer;
ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
@ -110,6 +113,8 @@ ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) {
_ArrayIndexOutOfBoundsException_instance = NULL;
_ArrayStoreException_instance = NULL;
_ClassCastException_instance = NULL;
_the_null_string = NULL;
_the_min_jint_string = NULL;
}
ciEnv::ciEnv(Arena* arena) {
@ -163,6 +168,8 @@ ciEnv::ciEnv(Arena* arena) {
_ArrayIndexOutOfBoundsException_instance = NULL;
_ArrayStoreException_instance = NULL;
_ClassCastException_instance = NULL;
_the_null_string = NULL;
_the_min_jint_string = NULL;
}
ciEnv::~ciEnv() {
@ -248,6 +255,22 @@ ciInstance* ciEnv::ClassCastException_instance() {
return _ClassCastException_instance;
}
ciInstance* ciEnv::the_null_string() {
if (_the_null_string == NULL) {
VM_ENTRY_MARK;
_the_null_string = get_object(Universe::the_null_string())->as_instance();
}
return _the_null_string;
}
ciInstance* ciEnv::the_min_jint_string() {
if (_the_min_jint_string == NULL) {
VM_ENTRY_MARK;
_the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
}
return _the_min_jint_string;
}
// ------------------------------------------------------------------
// ciEnv::get_method_from_handle
ciMethod* ciEnv::get_method_from_handle(jobject method) {