- Implement the filtering store barrier on x64.

runtime/vm/assembler_x64.h

Index: runtime/vm/assembler_x64.h
===================================================================
--- runtime/vm/assembler_x64.h	(revision 8921)
+++ runtime/vm/assembler_x64.h	(working copy)
@@ -517,6 +517,13 @@
                        const FieldAddress& dest,  // Where we are storing into.
                        Register value);  // Value we are storing.
 
+  void StoreIntoObjectNoBarrier(Register object,
+                                const FieldAddress& dest,
+                                Register value);
+  void StoreIntoObjectNoBarrier(Register object,
+                                const FieldAddress& dest,
+                                const Object& value);

[siva, 2012/06/20 23:33:28]

This method doesn't seem to be implemented in the 64 bit case.

[Ivan Posva, 2012/06/20 23:48:01]

I am waiting for a use of this and then we can implement it with a particular
test case in hand.

+
   void DoubleNegate(XmmRegister d);
   void FloatNegate(XmmRegister f);
 
@@ -622,6 +629,8 @@
   void EmitGenericShift(bool wide, int rm, Register reg, const Immediate& imm);
   void EmitGenericShift(bool wide, int rm, Register operand, Register shifter);
 
+  void StoreIntoObjectFilter(Register object, Register value, Label* no_update);
+
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };