[Interpreter] Collect type feedback for subtract operation and pass it to turbofan.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 2bfb1eb84e258a0ed59d46a1d4f463d0624a9c9c..9d2d40022d341cf2e313cf456334f5b234af7ace 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1150,6 +1150,15 @@ inline uint32_t ObjectHash(Address address) {
                                kPointerSizeLog2);
 }
 
+// Type feedbac is encoded in such a way that, we can combine the feedback
+// at different points by performing an 'OR' operation. Type feedback moves
+// to a more generic type when we combine feedback.
+// kSignedSmall -> kNumber  -> kAny
+class BinaryOperationFeedback {
+ public:
+  enum { kNone = 0x00, kSignedSmall = 0x01, kNumber = 0x3, kAny = 0x7 };
+};
+
 }  // namespace internal
 }  // namespace v8