--- old/src/cpu/x86/vm/assembler_x86.hpp	2015-02-13 08:28:04.559561368 -0800
+++ new/src/cpu/x86/vm/assembler_x86.hpp	2015-02-13 08:28:04.475561904 -0800
@@ -1546,6 +1546,8 @@
 
   // Shift Right by bytes Logical DoubleQuadword Immediate
   void psrldq(XMMRegister dst, int shift);
+  // Shift Left by bytes Logical DoubleQuadword Immediate
+  void pslldq(XMMRegister dst, int shift);
 
   // Logical Compare 128bit
   void ptest(XMMRegister dst, XMMRegister src);