--- old/src/cpu/x86/vm/assembler_x86.hpp	Fri Feb  6 14:00:01 2009
+++ new/src/cpu/x86/vm/assembler_x86.hpp	Fri Feb  6 14:00:01 2009
@@ -1154,6 +1154,10 @@
   void orq(Register dst, Address src);
   void orq(Register dst, Register src);
 
+  // SSE4.2 string instructions
+  void pcmpestri(XMMRegister xmm1, XMMRegister xmm2, int imm8);
+  void pcmpestri(XMMRegister xmm1, Address src, int imm8);
+
   void popl(Address dst);
 
 #ifdef _LP64
@@ -1180,6 +1184,10 @@
   // Shift Right Logical Quadword Immediate
   void psrlq(XMMRegister dst, int shift);
 
+  // Logical Compare Double Quadword
+  void ptest(XMMRegister dst, XMMRegister src);
+  void ptest(XMMRegister dst, Address src);
+
   // Interleave Low Bytes
   void punpcklbw(XMMRegister dst, XMMRegister src);