Mercurial > hg > truffle

diff src/share/vm/opto/loopTransform.cpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks Summary: Use RTM for inflated locks and stack locks. Reviewed-by: iveresov, twisti, roland, dcubed
author: kvn
date: Thu, 20 Mar 2014 17:49:27 -0700
parents: 085b304a1cc5
children: 62c54fcc0a35
--- a/src/share/vm/opto/loopTransform.cpp	Sat Mar 22 00:26:48 2014 +0400
+++ b/src/share/vm/opto/loopTransform.cpp	Thu Mar 20 17:49:27 2014 -0700
@@ -617,6 +617,15 @@
       case Op_AryEq: {
         return false;
       }
+#if INCLUDE_RTM_OPT
+      case Op_FastLock:
+      case Op_FastUnlock: {
+        // Don't unroll RTM locking code because it is large.
+        if (UseRTMLocking) {
+          return false;
+        }
+      }
+#endif
     } // switch
   }
 
@@ -722,6 +731,15 @@
         // String intrinsics are large and have loops.
         return false;
       }
+#if INCLUDE_RTM_OPT
+      case Op_FastLock:
+      case Op_FastUnlock: {
+        // Don't unroll RTM locking code because it is large.
+        if (UseRTMLocking) {
+          return false;
+        }
+      }
+#endif
     } // switch
   }