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

src/compiler/type-hint-analyzer.cc

Index: src/compiler/type-hint-analyzer.cc
diff --git a/src/compiler/type-hint-analyzer.cc b/src/compiler/type-hint-analyzer.cc
index e3cafb4112deb29f7d0fd586c4c164ab9e76a41a..2c30e84fd2c1744dc88275cc41ab206e59fcbb8c 100644
--- a/src/compiler/type-hint-analyzer.cc
+++ b/src/compiler/type-hint-analyzer.cc
@@ -136,6 +136,23 @@ TypeHintAnalysis* TypeHintAnalyzer::Analyze(Handle<Code> code) {
   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