Reland v8:18458 "Load the global proxy from the context of the target function."

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index a32a418606a058f5368a29d0ca0782a2400136e6..71ae30473fc0ed2c50574d20243de53c609a70b9 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -2414,7 +2414,8 @@ class HCallNamed V8_FINAL : public HUnaryCall {
 
 enum CallMode {
   NORMAL_CALL,
-  TAIL_CALL
+  TAIL_CALL,
+  NORMAL_CONTEXTUAL_CALL
 };
 
 
@@ -2425,7 +2426,7 @@ class HCallFunction V8_FINAL : public HBinaryCall {
       HCallFunction, HValue*, int, CallMode);
 
   bool IsTailCall() const { return call_mode_ == TAIL_CALL; }
-
+  bool IsContextualCall() const { return call_mode_ == NORMAL_CONTEXTUAL_CALL; }
   HValue* context() { return first(); }
   HValue* function() { return second(); }