--- old/src/share/vm/opto/lcm.cpp	2015-10-30 19:14:54.772475744 +0100
+++ new/src/share/vm/opto/lcm.cpp	2015-10-30 19:14:54.708475742 +0100
@@ -196,8 +196,12 @@
     case Op_StrComp:
     case Op_StrEquals:
     case Op_StrIndexOf:
+    case Op_StrIndexOfChar:
     case Op_AryEq:
+    case Op_StrInflatedCopy:
+    case Op_StrCompressedCopy:
     case Op_EncodeISOArray:
+    case Op_HasNegatives:
       // Not a legit memory op for implicit null check regardless of
       // embedded loads
       continue;