Refactor assignment in the ARM code generator...

src/arm/codegen-arm.h

Index: src/arm/codegen-arm.h
===================================================================
--- src/arm/codegen-arm.h	(revision 4568)
+++ src/arm/codegen-arm.h	(working copy)
@@ -312,10 +312,20 @@
   // Store the value on top of the stack to a slot.
   void StoreToSlot(Slot* slot, InitState init_state);
 
-  // Load a named property, leaving it in r0. The receiver is passed on the
+  // Support for compiling assignment expressions.
+  void EmitSlotAssignment(Assignment* node);
+  void EmitNamedPropertyAssignment(Assignment* node);
+  void EmitKeyedPropertyAssignment(Assignment* node);
+
+  // Load a named property, returning it in r0. The receiver is passed on the
   // stack, and remains there.
   void EmitNamedLoad(Handle<String> name, bool is_contextual);
 
+  // Store to a named property. If the store is contextual, value is passed on
+  // the frame and consumed. Otherwise, receiver and value are passed on the
+  // frame and consumed. The result is returned in r0.
+  void EmitNamedStore(Handle<String> name, bool is_contextual);
+
   // Load a keyed property, leaving it in r0.  The receiver and key are
   // passed on the stack, and remain there.
   void EmitKeyedLoad();