Support for unboxed 64-bit integer bitwise operations and equality on ia32.

runtime/vm/assembler_ia32.h

Index: runtime/vm/assembler_ia32.h
===================================================================
--- runtime/vm/assembler_ia32.h	(revision 12765)
+++ runtime/vm/assembler_ia32.h	(working copy)
@@ -369,7 +369,14 @@
   void xorps(XmmRegister dst, XmmRegister src);
 
   void andpd(XmmRegister dst, const Address& src);
+  void andpd(XmmRegister dst, XmmRegister src);
 
+  void orpd(XmmRegister dst, XmmRegister src);
+
+  void pextrd(Register dst, XmmRegister src, const Immediate& imm);
+  void pmovsxdq(XmmRegister dst, XmmRegister src);
+  void pcmpeqq(XmmRegister dst, XmmRegister src);
+
   void flds(const Address& src);
   void fstps(const Address& dst);