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comparison src/share/vm/opto/generateOptoStub.cpp @ 14429:2113136690bc

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8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering Summary: Add a field to C2 LoadNode and StoreNode classes which indicates whether the load/store should do an acquire/release on platforms which support it. Reviewed-by: kvn
author goetz
date Fri, 15 Nov 2013 11:05:32 -0800
parents 2b8e28fdf503
children abec000618bf
comparison
equal deleted inserted replaced
14427:eb178e97560c 14429:2113136690bc
102 // as soon as last_Java_sp != NULL the has_last_Java_frame is true and 102 // as soon as last_Java_sp != NULL the has_last_Java_frame is true and
103 // users will look at the other fields. 103 // users will look at the other fields.
104 // 104 //
105 Node *adr_sp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_sp_offset())); 105 Node *adr_sp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_sp_offset()));
106 Node *last_sp = basic_plus_adr(top(), frameptr(), (intptr_t) STACK_BIAS); 106 Node *last_sp = basic_plus_adr(top(), frameptr(), (intptr_t) STACK_BIAS);
107 store_to_memory(NULL, adr_sp, last_sp, T_ADDRESS, NoAlias); 107 store_to_memory(NULL, adr_sp, last_sp, T_ADDRESS, NoAlias, MemNode::unordered);
108 108
109 // Set _thread_in_native 109 // Set _thread_in_native
110 // The order of stores into TLS is critical! Setting _thread_in_native MUST 110 // The order of stores into TLS is critical! Setting _thread_in_native MUST
111 // be last, because a GC is allowed at any time after setting it and the GC 111 // be last, because a GC is allowed at any time after setting it and the GC
112 // will require last_Java_pc and last_Java_sp. 112 // will require last_Java_pc and last_Java_sp.
113 Node* adr_state = basic_plus_adr(top(), thread, in_bytes(JavaThread::thread_state_offset()));
114 113
115 //----------------------------- 114 //-----------------------------
116 // Compute signature for C call. Varies from the Java signature! 115 // Compute signature for C call. Varies from the Java signature!
117 const Type **fields = TypeTuple::fields(2*parm_cnt+2); 116 const Type **fields = TypeTuple::fields(2*parm_cnt+2);
118 uint cnt = TypeFunc::Parms; 117 uint cnt = TypeFunc::Parms;
223 } 222 }
224 223
225 //----------------------------- 224 //-----------------------------
226 225
227 // Clear last_Java_sp 226 // Clear last_Java_sp
228 store_to_memory(NULL, adr_sp, null(), T_ADDRESS, NoAlias); 227 store_to_memory(NULL, adr_sp, null(), T_ADDRESS, NoAlias, MemNode::unordered);
229 // Clear last_Java_pc and (optionally)_flags 228 // Clear last_Java_pc and (optionally)_flags
230 store_to_memory(NULL, adr_last_Java_pc, null(), T_ADDRESS, NoAlias); 229 store_to_memory(NULL, adr_last_Java_pc, null(), T_ADDRESS, NoAlias, MemNode::unordered);
231 #if defined(SPARC) 230 #if defined(SPARC)
232 store_to_memory(NULL, adr_flags, intcon(0), T_INT, NoAlias); 231 store_to_memory(NULL, adr_flags, intcon(0), T_INT, NoAlias, MemNode::unordered);
233 #endif /* defined(SPARC) */ 232 #endif /* defined(SPARC) */
234 #if (defined(IA64) && !defined(AIX)) 233 #if (defined(IA64) && !defined(AIX))
235 Node* adr_last_Java_fp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_fp_offset())); 234 Node* adr_last_Java_fp = basic_plus_adr(top(), thread, in_bytes(JavaThread::last_Java_fp_offset()));
236 if( os::is_MP() ) insert_mem_bar(Op_MemBarRelease); 235 store_to_memory(NULL, adr_last_Java_fp, null(), T_ADDRESS, NoAlias, MemNode::unordered);
237 store_to_memory(NULL, adr_last_Java_fp, null(), T_ADDRESS, NoAlias);
238 #endif 236 #endif
239 237
240 // For is-fancy-jump, the C-return value is also the branch target 238 // For is-fancy-jump, the C-return value is also the branch target
241 Node* target = map()->in(TypeFunc::Parms); 239 Node* target = map()->in(TypeFunc::Parms);
242 // Runtime call returning oop in TLS? Fetch it out 240 // Runtime call returning oop in TLS? Fetch it out
243 if( pass_tls ) { 241 if( pass_tls ) {
244 Node* adr = basic_plus_adr(top(), thread, in_bytes(JavaThread::vm_result_offset())); 242 Node* adr = basic_plus_adr(top(), thread, in_bytes(JavaThread::vm_result_offset()));
245 Node* vm_result = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false); 243 Node* vm_result = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, MemNode::unordered);
246 map()->set_req(TypeFunc::Parms, vm_result); // vm_result passed as result 244 map()->set_req(TypeFunc::Parms, vm_result); // vm_result passed as result
247 // clear thread-local-storage(tls) 245 // clear thread-local-storage(tls)
248 store_to_memory(NULL, adr, null(), T_ADDRESS, NoAlias); 246 store_to_memory(NULL, adr, null(), T_ADDRESS, NoAlias, MemNode::unordered);
249 } 247 }
250 248
251 //----------------------------- 249 //-----------------------------
252 // check exception 250 // check exception
253 Node* adr = basic_plus_adr(top(), thread, in_bytes(Thread::pending_exception_offset())); 251 Node* adr = basic_plus_adr(top(), thread, in_bytes(Thread::pending_exception_offset()));
254 Node* pending = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, false); 252 Node* pending = make_load(NULL, adr, TypeOopPtr::BOTTOM, T_OBJECT, NoAlias, MemNode::unordered);
255 253
256 Node* exit_memory = reset_memory(); 254 Node* exit_memory = reset_memory();
257 255
258 Node* cmp = _gvn.transform( new (C) CmpPNode(pending, null()) ); 256 Node* cmp = _gvn.transform( new (C) CmpPNode(pending, null()) );
259 Node* bo = _gvn.transform( new (C) BoolNode(cmp, BoolTest::ne) ); 257 Node* bo = _gvn.transform( new (C) BoolNode(cmp, BoolTest::ne) );