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comparison src/share/vm/opto/library_call.cpp @ 3278:66b0e2371912

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7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post Summary: memory slices should be always created for non-static fields after allocation Reviewed-by: never
author kvn
date Wed, 20 Apr 2011 18:29:35 -0700
parents 13bc79b5c9c8
children 286c498ae0d4
comparison
equal deleted inserted replaced
3277:d934e4b931e9 3278:66b0e2371912
3374 // How many elements will we copy from the original? 3374 // How many elements will we copy from the original?
3375 // The answer is MinI(orig_length - start, length). 3375 // The answer is MinI(orig_length - start, length).
3376 Node* orig_tail = _gvn.transform( new(C, 3) SubINode(orig_length, start) ); 3376 Node* orig_tail = _gvn.transform( new(C, 3) SubINode(orig_length, start) );
3377 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); 3377 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length);
3378 3378
3379 const bool raw_mem_only = true; 3379 newcopy = new_array(klass_node, length, 0);
3380 newcopy = new_array(klass_node, length, 0, raw_mem_only);
3381 3380
3382 // Generate a direct call to the right arraycopy function(s). 3381 // Generate a direct call to the right arraycopy function(s).
3383 // We know the copy is disjoint but we might not know if the 3382 // We know the copy is disjoint but we might not know if the
3384 // oop stores need checking. 3383 // oop stores need checking.
3385 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). 3384 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class).
4172 TypePtr::BOTTOM); 4171 TypePtr::BOTTOM);
4173 record_for_igvn(result_reg); 4172 record_for_igvn(result_reg);
4174 4173
4175 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; 4174 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM;
4176 int raw_adr_idx = Compile::AliasIdxRaw; 4175 int raw_adr_idx = Compile::AliasIdxRaw;
4177 const bool raw_mem_only = true;
4178
4179 4176
4180 Node* array_ctl = generate_array_guard(obj_klass, (RegionNode*)NULL); 4177 Node* array_ctl = generate_array_guard(obj_klass, (RegionNode*)NULL);
4181 if (array_ctl != NULL) { 4178 if (array_ctl != NULL) {
4182 // It's an array. 4179 // It's an array.
4183 PreserveJVMState pjvms(this); 4180 PreserveJVMState pjvms(this);
4184 set_control(array_ctl); 4181 set_control(array_ctl);
4185 Node* obj_length = load_array_length(obj); 4182 Node* obj_length = load_array_length(obj);
4186 Node* obj_size = NULL; 4183 Node* obj_size = NULL;
4187 Node* alloc_obj = new_array(obj_klass, obj_length, 0, 4184 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &obj_size);
4188 raw_mem_only, &obj_size);
4189 4185
4190 if (!use_ReduceInitialCardMarks()) { 4186 if (!use_ReduceInitialCardMarks()) {
4191 // If it is an oop array, it requires very special treatment, 4187 // If it is an oop array, it requires very special treatment,
4192 // because card marking is required on each card of the array. 4188 // because card marking is required on each card of the array.
4193 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); 4189 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL);
4255 4251
4256 if (!stopped()) { 4252 if (!stopped()) {
4257 // It's an instance, and it passed the slow-path tests. 4253 // It's an instance, and it passed the slow-path tests.
4258 PreserveJVMState pjvms(this); 4254 PreserveJVMState pjvms(this);
4259 Node* obj_size = NULL; 4255 Node* obj_size = NULL;
4260 Node* alloc_obj = new_instance(obj_klass, NULL, raw_mem_only, &obj_size); 4256 Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size);
4261 4257
4262 copy_to_clone(obj, alloc_obj, obj_size, false, !use_ReduceInitialCardMarks()); 4258 copy_to_clone(obj, alloc_obj, obj_size, false, !use_ReduceInitialCardMarks());
4263 4259
4264 // Present the results of the slow call. 4260 // Present the results of the slow call.
4265 result_reg->init_req(_instance_path, control()); 4261 result_reg->init_req(_instance_path, control());