[turbofan] Initial version of number type feedback.

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 1e10fe60897118f336305eb13b54398c8073eea5..cc02152442d25e3c76e5a8cd7503bca51dc691e4 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -376,6 +376,12 @@ const CreateLiteralParameters& CreateLiteralParametersOf(const Operator* op) {
   return OpParameter<CreateLiteralParameters>(op);
 }
 
+const BinaryOperationHints& BinaryOperationHintsOf(const Operator* op) {
+  DCHECK(op->opcode() == IrOpcode::kJSAdd ||
+         op->opcode() == IrOpcode::kJSSubtract);
+  return OpParameter<BinaryOperationHints>(op);
+}
+
 #define CACHED_OP_LIST(V)                                   \
   V(Equal, Operator::kNoProperties, 2, 1)                   \
   V(NotEqual, Operator::kNoProperties, 2, 1)                \