3228 // from sliding up past the just-emitted store.
3229
3230 MemBarNode* mb = MemBarNode::make(C, opcode, alias_idx, precedent);
3231 mb->set_req(TypeFunc::Control,control());
3232 if (alias_idx == Compile::AliasIdxBot) {
3233 mb->set_req(TypeFunc::Memory, merged_memory()->base_memory());
3234 } else {
3235 assert(!(opcode == Op_Initialize && alias_idx != Compile::AliasIdxRaw), "fix caller");
3236 mb->set_req(TypeFunc::Memory, memory(alias_idx));
3237 }
3238 Node* membar = _gvn.transform(mb);
3239 set_control(_gvn.transform(new ProjNode(membar, TypeFunc::Control)));
3240 if (alias_idx == Compile::AliasIdxBot) {
3241 merged_memory()->set_base_memory(_gvn.transform(new ProjNode(membar, TypeFunc::Memory)));
3242 } else {
3243 set_memory(_gvn.transform(new ProjNode(membar, TypeFunc::Memory)),alias_idx);
3244 }
3245 return membar;
3246 }
3247
3248 //------------------------------shared_lock------------------------------------
3249 // Emit locking code.
3250 FastLockNode* GraphKit::shared_lock(Node* obj) {
3251 // bci is either a monitorenter bc or InvocationEntryBci
3252 // %%% SynchronizationEntryBCI is redundant; use InvocationEntryBci in interfaces
3253 assert(SynchronizationEntryBCI == InvocationEntryBci, "");
3254
3255 if( !GenerateSynchronizationCode )
3256 return NULL; // Not locking things?
3257 if (stopped()) // Dead monitor?
3258 return NULL;
3259
3260 assert(dead_locals_are_killed(), "should kill locals before sync. point");
3261
3262 obj = access_resolve(obj, ACCESS_READ | ACCESS_WRITE);
3263
3264 // Box the stack location
3265 Node* box = _gvn.transform(new BoxLockNode(next_monitor()));
3266 Node* mem = reset_memory();
3267
|
3228 // from sliding up past the just-emitted store.
3229
3230 MemBarNode* mb = MemBarNode::make(C, opcode, alias_idx, precedent);
3231 mb->set_req(TypeFunc::Control,control());
3232 if (alias_idx == Compile::AliasIdxBot) {
3233 mb->set_req(TypeFunc::Memory, merged_memory()->base_memory());
3234 } else {
3235 assert(!(opcode == Op_Initialize && alias_idx != Compile::AliasIdxRaw), "fix caller");
3236 mb->set_req(TypeFunc::Memory, memory(alias_idx));
3237 }
3238 Node* membar = _gvn.transform(mb);
3239 set_control(_gvn.transform(new ProjNode(membar, TypeFunc::Control)));
3240 if (alias_idx == Compile::AliasIdxBot) {
3241 merged_memory()->set_base_memory(_gvn.transform(new ProjNode(membar, TypeFunc::Memory)));
3242 } else {
3243 set_memory(_gvn.transform(new ProjNode(membar, TypeFunc::Memory)),alias_idx);
3244 }
3245 return membar;
3246 }
3247
3248 void GraphKit::insert_store_load_for_barrier() {
3249 Node* mem = reset_memory();
3250 MemBarNode* mb = MemBarNode::make(C, Op_MemBarVolatile, Compile::AliasIdxRaw);
3251 mb->init_req(TypeFunc::Control, control());
3252 mb->init_req(TypeFunc::Memory, mem);
3253 Node* membar = _gvn.transform(mb);
3254 set_control(_gvn.transform(new ProjNode(membar, TypeFunc::Control)));
3255 Node* newmem = _gvn.transform(new ProjNode(membar, TypeFunc::Memory));
3256 set_all_memory(mem);
3257 set_memory(newmem, Compile::AliasIdxRaw);
3258 }
3259
3260 //------------------------------shared_lock------------------------------------
3261 // Emit locking code.
3262 FastLockNode* GraphKit::shared_lock(Node* obj) {
3263 // bci is either a monitorenter bc or InvocationEntryBci
3264 // %%% SynchronizationEntryBCI is redundant; use InvocationEntryBci in interfaces
3265 assert(SynchronizationEntryBCI == InvocationEntryBci, "");
3266
3267 if( !GenerateSynchronizationCode )
3268 return NULL; // Not locking things?
3269 if (stopped()) // Dead monitor?
3270 return NULL;
3271
3272 assert(dead_locals_are_killed(), "should kill locals before sync. point");
3273
3274 obj = access_resolve(obj, ACCESS_READ | ACCESS_WRITE);
3275
3276 // Box the stack location
3277 Node* box = _gvn.transform(new BoxLockNode(next_monitor()));
3278 Node* mem = reset_memory();
3279
|