[Interpreter] Add support for calling runtime functions which return a pair.

src/code-factory.h

Index: src/code-factory.h
diff --git a/src/code-factory.h b/src/code-factory.h
index a4701672d579a3120118c06aa6a879e0132bdf9e..acd98951eb06941205a59f5573393e1ad1946ea9 100644
--- a/src/code-factory.h
+++ b/src/code-factory.h
@@ -111,6 +111,7 @@ class CodeFactory final {
   static Callable InterpreterPushArgsAndCall(Isolate* isolate);
   static Callable InterpreterPushArgsAndConstruct(Isolate* isolate);
   static Callable InterpreterCEntry(Isolate* isolate);
+  static Callable InterpreterCEntryPair(Isolate* isolate);

[Michael Starzinger, 2016/01/07 17:21:28]

suggestion: What would you think about passing in the "result_size" as an
argument to InterpreterCEntry (with a default argument value of 1) instead? The
advantage I see is that callers could be parameterized, which would reduce code
duplication slightly.

[rmcilroy, 2016/01/08 14:15:06]

SGTM, done.

 };
 
 }  // namespace internal