Write barrier for storing a code entry, and usage in CompileLazy builtin.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 5cfbb3143ae3a684f6f8e6005067748bce9b7808..431a999259bf72938e90bb40d0855ab274b2f471 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -428,6 +428,11 @@ class MacroAssembler: public Assembler {
                      pointers_to_here_check_for_value);
   }
 
+  // Notify the garbage collector that we wrote a code entry into a
+  // JSFunction. Only scratch is clobbered by the operation.
+  void RecordWriteCodeEntryField(Register js_function, Register code_entry,
+                                 Register scratch);
+
   void RecordWriteForMap(
       Register object,
       Register map,