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comparison src/share/vm/ci/ciEnv.cpp @ 1137:97125851f396

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6829187: compiler optimizations required for JSR 292 Summary: C2 implementation for invokedynamic support. Reviewed-by: kvn, never
author twisti
date Tue, 05 Jan 2010 13:05:58 +0100
parents 7c57aead6d3e
children dd57230ba8fe
comparison
equal deleted inserted replaced
1136:4b84186a8248 1137:97125851f396
39 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; 39 ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance;
40 40
41 ciInstanceKlass* ciEnv::_ArrayStoreException; 41 ciInstanceKlass* ciEnv::_ArrayStoreException;
42 ciInstanceKlass* ciEnv::_Class; 42 ciInstanceKlass* ciEnv::_Class;
43 ciInstanceKlass* ciEnv::_ClassCastException; 43 ciInstanceKlass* ciEnv::_ClassCastException;
44 ciInstanceKlass* ciEnv::_InvokeDynamic;
44 ciInstanceKlass* ciEnv::_Object; 45 ciInstanceKlass* ciEnv::_Object;
45 ciInstanceKlass* ciEnv::_Throwable; 46 ciInstanceKlass* ciEnv::_Throwable;
46 ciInstanceKlass* ciEnv::_Thread; 47 ciInstanceKlass* ciEnv::_Thread;
47 ciInstanceKlass* ciEnv::_OutOfMemoryError; 48 ciInstanceKlass* ciEnv::_OutOfMemoryError;
48 ciInstanceKlass* ciEnv::_String; 49 ciInstanceKlass* ciEnv::_String;
734 get_object(sig_sym)->as_symbol()); 735 get_object(sig_sym)->as_symbol());
735 } 736 }
736 737
737 738
738 // ------------------------------------------------------------------ 739 // ------------------------------------------------------------------
740 // ciEnv::get_fake_invokedynamic_method_impl
741 ciMethod* ciEnv::get_fake_invokedynamic_method_impl(ciInstanceKlass* accessor,
742 int index, Bytecodes::Code bc) {
743 assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic");
744 assert(accessor->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool");
745 constantPoolHandle cpool = accessor->get_instanceKlass()->constants();
746
747 // Get the CallSite from the constant pool cache.
748 ConstantPoolCacheEntry* cpc_entry = cpool->cache()->secondary_entry_at(index);
749 assert(cpc_entry != NULL && cpc_entry->is_secondary_entry(), "sanity");
750 Handle call_site = cpc_entry->f1();
751
752 // Call site might not be linked yet.
753 if (call_site.is_null()) {
754 ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass();
755 ciSymbol* sig_sym = get_object(cpool->signature_ref_at(index))->as_symbol();
756 return get_unloaded_method(mh_klass, ciSymbol::invoke_name(), sig_sym);
757 }
758
759 // Get the methodOop from the CallSite.
760 methodOop method_oop = (methodOop) java_dyn_CallSite::vmmethod(call_site());
761 assert(method_oop != NULL, "sanity");
762 assert(method_oop->is_method_handle_invoke(), "consistent");
763
764 return get_object(method_oop)->as_method();
765 }
766
767
768 // ------------------------------------------------------------------
739 // ciEnv::get_instance_klass_for_declared_method_holder 769 // ciEnv::get_instance_klass_for_declared_method_holder
740 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { 770 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
741 // For the case of <array>.clone(), the method holder can be a ciArrayKlass 771 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
742 // instead of a ciInstanceKlass. For that case simply pretend that the 772 // instead of a ciInstanceKlass. For that case simply pretend that the
743 // declared holder is Object.clone since that's where the call will bottom out. 773 // declared holder is Object.clone since that's where the call will bottom out.
755 } 785 }
756 return NULL; 786 return NULL;
757 } 787 }
758 788
759 789
760
761
762 // ------------------------------------------------------------------ 790 // ------------------------------------------------------------------
763 // ciEnv::get_method_by_index 791 // ciEnv::get_method_by_index
764 ciMethod* ciEnv::get_method_by_index(ciInstanceKlass* accessor, 792 ciMethod* ciEnv::get_method_by_index(ciInstanceKlass* accessor,
765 int index, Bytecodes::Code bc) { 793 int index, Bytecodes::Code bc) {
766 GUARDED_VM_ENTRY(return get_method_by_index_impl(accessor, index, bc);) 794 if (bc == Bytecodes::_invokedynamic) {
767 } 795 GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(accessor, index, bc);)
796 } else {
797 GUARDED_VM_ENTRY(return get_method_by_index_impl(accessor, index, bc);)
798 }
799 }
800
768 801
769 // ------------------------------------------------------------------ 802 // ------------------------------------------------------------------
770 // ciEnv::name_buffer 803 // ciEnv::name_buffer
771 char *ciEnv::name_buffer(int req_len) { 804 char *ciEnv::name_buffer(int req_len) {
772 if (_name_buffer_len < req_len) { 805 if (_name_buffer_len < req_len) {