vm/opto/graphKit.cpp

3164 // The membar serves as a pinch point between both control and all memory slices.
3169   Node* membar = _gvn.transform(mb);
3170   set_control(_gvn.transform(new ProjNode(membar, TypeFunc::Control)));
3171   set_all_memory_call(membar);
3172   return membar;
3177 // The membar serves as a pinch point between both control and memory(alias_idx).
3183   // The first membar is on the same memory slice as the field store opcode.
3184   // This forces the membar to follow the store.  (Bug 6500685 broke this.)
3187   // on the first membar.  This prevents later volatile loads or stores
3198   Node* membar = _gvn.transform(mb);
3199   set_control(_gvn.transform(new ProjNode(membar, TypeFunc::Control)));
3201     merged_memory()->set_base_memory(_gvn.transform(new ProjNode(membar, TypeFunc::Memory)));
3203     set_memory(_gvn.transform(new ProjNode(membar, TypeFunc::Memory)),alias_idx);
3205   return membar;