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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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52
hotspot/src/share/vm/classfile/vmSymbols.hpp
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@ -84,6 +84,7 @@
template(java_lang_reflect_Field, "java/lang/reflect/Field") \
template(java_lang_reflect_Array, "java/lang/reflect/Array") \
template(java_lang_StringBuffer, "java/lang/StringBuffer") \
template(java_lang_StringBuilder, "java/lang/StringBuilder") \
template(java_lang_CharSequence, "java/lang/CharSequence") \
template(java_security_AccessControlContext, "java/security/AccessControlContext") \
template(java_security_ProtectionDomain, "java/security/ProtectionDomain") \
@ -334,6 +335,7 @@
template(ptypes_name, "ptypes") \
template(form_name, "form") \
template(erasedType_name, "erasedType") \
template(append_name, "append") \
\
/* non-intrinsic name/signature pairs: */ \
template(register_method_name, "register") \
@ -415,6 +417,13 @@
template(string_signature, "Ljava/lang/String;") \
template(reference_signature, "Ljava/lang/ref/Reference;") \
template(concurrenthashmap_signature, "Ljava/util/concurrent/ConcurrentHashMap;") \
template(String_StringBuilder_signature, "(Ljava/lang/String;)Ljava/lang/StringBuilder;") \
template(int_StringBuilder_signature, "(I)Ljava/lang/StringBuilder;") \
template(char_StringBuilder_signature, "(C)Ljava/lang/StringBuilder;") \
template(String_StringBuffer_signature, "(Ljava/lang/String;)Ljava/lang/StringBuffer;") \
template(int_StringBuffer_signature, "(I)Ljava/lang/StringBuffer;") \
template(char_StringBuffer_signature, "(C)Ljava/lang/StringBuffer;") \
template(int_String_signature, "(I)Ljava/lang/String;") \
/* signature symbols needed by intrinsics */ \
VM_INTRINSICS_DO(VM_INTRINSIC_IGNORE, VM_SYMBOL_IGNORE, VM_SYMBOL_IGNORE, template, VM_ALIAS_IGNORE) \
\
@ -814,10 +823,34 @@
/*the compiler does have special inlining code for these; bytecode inline is just fine */ \
\
do_intrinsic(_fillInStackTrace, java_lang_Throwable, fillInStackTrace_name, void_throwable_signature, F_RNY) \
\
do_intrinsic(_Object_init, java_lang_Object, object_initializer_name, void_method_signature, F_R) \
/* (symbol object_initializer_name defined above) */ \
\
\
do_intrinsic(_StringBuilder_void, java_lang_StringBuilder, object_initializer_name, void_method_signature, F_R) \
do_intrinsic(_StringBuilder_int, java_lang_StringBuilder, object_initializer_name, int_void_signature, F_R) \
do_intrinsic(_StringBuilder_String, java_lang_StringBuilder, object_initializer_name, string_void_signature, F_R) \
\
do_intrinsic(_StringBuilder_append_char, java_lang_StringBuilder, append_name, char_StringBuilder_signature, F_R) \
do_intrinsic(_StringBuilder_append_int, java_lang_StringBuilder, append_name, int_StringBuilder_signature, F_R) \
do_intrinsic(_StringBuilder_append_String, java_lang_StringBuilder, append_name, String_StringBuilder_signature, F_R) \
\
do_intrinsic(_StringBuilder_toString, java_lang_StringBuilder, toString_name, void_string_signature, F_R) \
\
do_intrinsic(_StringBuffer_void, java_lang_StringBuffer, object_initializer_name, void_method_signature, F_R) \
do_intrinsic(_StringBuffer_int, java_lang_StringBuffer, object_initializer_name, int_void_signature, F_R) \
do_intrinsic(_StringBuffer_String, java_lang_StringBuffer, object_initializer_name, string_void_signature, F_R) \
\
do_intrinsic(_StringBuffer_append_char, java_lang_StringBuffer, append_name, char_StringBuffer_signature, F_Y) \
do_intrinsic(_StringBuffer_append_int, java_lang_StringBuffer, append_name, int_StringBuffer_signature, F_Y) \
do_intrinsic(_StringBuffer_append_String, java_lang_StringBuffer, append_name, String_StringBuffer_signature, F_Y) \
\
do_intrinsic(_StringBuffer_toString, java_lang_StringBuffer, toString_name, void_string_signature, F_Y) \
\
do_intrinsic(_Integer_toString, java_lang_Integer, toString_name, int_String_signature, F_S) \
\
do_intrinsic(_String_String, java_lang_String, object_initializer_name, string_void_signature, F_R) \
\
do_intrinsic(_Object_init, java_lang_Object, object_initializer_name, void_method_signature, F_R) \
/* (symbol object_initializer_name defined above) */ \
\
do_intrinsic(_invoke, java_lang_reflect_Method, invoke_name, object_array_object_object_signature, F_R) \
/* (symbols invoke_name and invoke_signature defined above) */ \
\
@ -945,11 +978,12 @@ class vmIntrinsics: AllStatic {
enum Flags {
// AccessFlags syndromes relevant to intrinsics.
F_none = 0,
F_R, // !static !synchronized (R="regular")
F_S, // static !synchronized
F_RN, // !static native !synchronized
F_SN, // static native !synchronized
F_RNY // !static native synchronized
F_R, // !static ?native !synchronized (R="regular")
F_S, // static ?native !synchronized
F_Y, // !static ?native synchronized
F_RN, // !static native !synchronized
F_SN, // static native !synchronized
F_RNY // !static native synchronized
};
public: