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

src/compiler/type-hint-analyzer.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/type-hint-analyzer.h"
 
 #include "src/assembler.h"
 #include "src/code-stubs.h"
 #include "src/compiler/type-hints.h"
 #include "src/ic/ic-state.h"
@@ skipping 118 matching lines @@
         break;
       }
       default:
         // Ignore the remaining code objects.
         break;
     }
   }
   return new (zone()) TypeHintAnalysis(infos, zone());
 }
 
+// Helper function to transform the feedback to BinaryOperationHints
+// The encoded type is in the lower three bits as follows:
+// 1XX - Any Type
+// 01X - Number Type
+// 001 - Smi Type
+BinaryOperationHints::Hint BinaryOperationHintFromFeedback(int type_feedback) {
+  BinaryOperationHints::Hint hint = BinaryOperationHints::kAny;
+  if (BinaryOpTypeFeedback::AnyType::decode(type_feedback)) {
+    hint = BinaryOperationHints::kAny;
+  } else if (BinaryOpTypeFeedback::NumberType::decode(type_feedback)) {
+    hint = BinaryOperationHints::kNumberOrOddball;
+  } else if (BinaryOpTypeFeedback::SmiType::decode(type_feedback)) {
+    hint = BinaryOperationHints::kSigned32;
+  }
+  return hint;
+}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8