src/share/vm/adlc/formssel.cpp

rev 3419 : 7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
Summary: use shorter instruction sequences for atomic add and atomic exchange when possible.
Reviewed-by:

@@ -749,10 +749,11 @@
        (!strcmp(_matrule->_rChild->_opType,"CastPP")     ||  // new result type
         !strcmp(_matrule->_rChild->_opType,"CastX2P")    ||  // new result type
         !strcmp(_matrule->_rChild->_opType,"DecodeN")    ||
         !strcmp(_matrule->_rChild->_opType,"EncodeP")    ||
         !strcmp(_matrule->_rChild->_opType,"LoadN")      ||
+        !strcmp(_matrule->_rChild->_opType,"GetAndSetN") ||
         !strcmp(_matrule->_rChild->_opType,"LoadNKlass") ||
         !strcmp(_matrule->_rChild->_opType,"CreateEx")   ||  // type of exception
         !strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true;
   else if ( is_ideal_load() == Form::idealP )                return true;
   else if ( is_ideal_store() != Form::none  )                return true;

@@ -3397,11 +3398,13 @@
     "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned",
     "LoadPLocked",
     "StorePConditional", "StoreIConditional", "StoreLConditional",
     "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN",
     "StoreCM",
-    "ClearArray"
+    "ClearArray", 
+    "GetAndAddI", "GetAndSetI", "GetAndSetP",
+    "GetAndAddL", "GetAndSetL", "GetAndSetN",
   };
   int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*);
   if( strcmp(_opType,"PrefetchRead")==0 ||
       strcmp(_opType,"PrefetchWrite")==0 ||
       strcmp(_opType,"PrefetchAllocation")==0 )