[promises] Move promise constructor to TFS

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 1a1f5fd26437ea9e2b3a51915102251ef4e2d3d9..681f1162852a1154c407a2b78bc0f627b5942fa1 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5688,6 +5688,8 @@ class Code: public HeapObject {
   // the layout of the code object into account.
   inline int ExecutableSize();
 
+  DECL_INT_ACCESSORS(exception_hint)

[jgruber, 2016/11/22 08:55:55]

If this is just a boolean, perhaps it could be turned into a flag bit instead.
E.g. KindSpecificFlags1 still seems to have a few available bits.

[gsathya, 2016/11/23 14:31:18]

Yes, agreed. I had a comment on my previous patch about this. I guess it could
be a bit for now and refactored later if we have to support other catch
prediction

+
   DECLARE_CAST(Code)
 
   // Dispatched behavior.
@@ -5785,7 +5787,8 @@ class Code: public HeapObject {
   static const int kConstantPoolOffset = kPrologueOffset + kIntSize;
   static const int kBuiltinIndexOffset =
       kConstantPoolOffset + kConstantPoolSize;
-  static const int kHeaderPaddingStart = kBuiltinIndexOffset + kIntSize;
+  static const int kExceptionHintOffset = kBuiltinIndexOffset + kIntSize;
+  static const int kHeaderPaddingStart = kExceptionHintOffset + kIntSize;
 
   // Add padding to align the instruction start following right after
   // the Code object header.