IA32 and X64 assembler Float64x2 additions

runtime/vm/assembler_x64.h

Index: runtime/vm/assembler_x64.h
diff --git a/runtime/vm/assembler_x64.h b/runtime/vm/assembler_x64.h
index 0e1f2a6f8c0ef8166f322e488cf3c4a1bcfd3e72..6d419a6d47f0799b6b362e790439a8c8e81b2aed 100644
--- a/runtime/vm/assembler_x64.h
+++ b/runtime/vm/assembler_x64.h
@@ -460,6 +460,18 @@ class Assembler : public ValueObject {
   void set1ps(XmmRegister dst, Register tmp, const Immediate& imm);
   void shufps(XmmRegister dst, XmmRegister src, const Immediate& mask);
 
+  void addpd(XmmRegister dst, XmmRegister src);
+  void negatepd(XmmRegister dst);
+  void subpd(XmmRegister dst, XmmRegister src);
+  void mulpd(XmmRegister dst, XmmRegister src);
+  void divpd(XmmRegister dst, XmmRegister src);
+  void abspd(XmmRegister dst);
+  void minpd(XmmRegister dst, XmmRegister src);
+  void maxpd(XmmRegister dst, XmmRegister src);
+  void sqrtpd(XmmRegister dst);
+  void cvtps2pd(XmmRegister dst, XmmRegister src);
+  void cvtpd2ps(XmmRegister dst, XmmRegister src);
+
   void comisd(XmmRegister a, XmmRegister b);
   void cvtsi2sd(XmmRegister a, Register b);
   void cvttsd2siq(Register dst, XmmRegister src);