Mercurial > hg > graal-jvmci-8

comparison src/share/vm/c1/c1_GraphBuilder.cpp @ 3255:5d046bf49ce7

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Merge
author johnc
date Thu, 14 Apr 2011 13:45:41 -0700
parents 13bc79b5c9c8 92add02409c9
children 2c359f27615c
comparison
equal deleted inserted replaced
2468:6c97c830fb6f 3255:5d046bf49ce7
2911 // connect the begin and end blocks and we're all done. 2911 // connect the begin and end blocks and we're all done.
2912 BlockEnd* end = last()->as_BlockEnd(); 2912 BlockEnd* end = last()->as_BlockEnd();
2913 block()->set_end(end); 2913 block()->set_end(end);
2914 break; 2914 break;
2915 } 2915 }
2916
2917 case vmIntrinsics::_Reference_get:
2918 {
2919 if (UseG1GC) {
2920 // With java.lang.ref.reference.get() we must go through the
2921 // intrinsic - when G1 is enabled - even when get() is the root
2922 // method of the compile so that, if necessary, the value in
2923 // the referent field of the reference object gets recorded by
2924 // the pre-barrier code.
2925 // Specifically, if G1 is enabled, the value in the referent
2926 // field is recorded by the G1 SATB pre barrier. This will
2927 // result in the referent being marked live and the reference
2928 // object removed from the list of discovered references during
2929 // reference processing.
2930
2931 // Set up a stream so that appending instructions works properly.
2932 ciBytecodeStream s(scope->method());
2933 s.reset_to_bci(0);
2934 scope_data()->set_stream(&s);
2935 s.next();
2936
2937 // setup the initial block state
2938 _block = start_block;
2939 _state = start_block->state()->copy_for_parsing();
2940 _last = start_block;
2941 load_local(objectType, 0);
2942
2943 // Emit the intrinsic node.
2944 bool result = try_inline_intrinsics(scope->method());
2945 if (!result) BAILOUT("failed to inline intrinsic");
2946 method_return(apop());
2947
2948 // connect the begin and end blocks and we're all done.
2949 BlockEnd* end = last()->as_BlockEnd();
2950 block()->set_end(end);
2951 break;
2952 }
2953 // Otherwise, fall thru
2954 }
2955
2916 default: 2956 default:
2917 scope_data()->add_to_work_list(start_block); 2957 scope_data()->add_to_work_list(start_block);
2918 iterate_all_blocks(); 2958 iterate_all_blocks();
2919 break; 2959 break;
2920 } 2960 }
3147 // fall through 3187 // fall through
3148 case vmIntrinsics::_compareAndSwapInt: 3188 case vmIntrinsics::_compareAndSwapInt:
3149 case vmIntrinsics::_compareAndSwapObject: 3189 case vmIntrinsics::_compareAndSwapObject:
3150 append_unsafe_CAS(callee); 3190 append_unsafe_CAS(callee);
3151 return true; 3191 return true;
3192
3193 case vmIntrinsics::_Reference_get:
3194 // It is only when G1 is enabled that we absolutely
3195 // need to use the intrinsic version of Reference.get()
3196 // so that the value in the referent field, if necessary,
3197 // can be registered by the pre-barrier code.
3198 if (!UseG1GC) return false;
3199 preserves_state = true;
3200 break;
3152 3201
3153 default : return false; // do not inline 3202 default : return false; // do not inline
3154 } 3203 }
3155 // create intrinsic node 3204 // create intrinsic node
3156 const bool has_receiver = !callee->is_static(); 3205 const bool has_receiver = !callee->is_static();