[turbofan] Move more type checks to the representation selector.

src/compiler/simplified-operator.h

Index: src/compiler/simplified-operator.h
diff --git a/src/compiler/simplified-operator.h b/src/compiler/simplified-operator.h
index 7f11ecb43bd6d3c2fd60690cbffefc9aaa92bc80..857e35f5eb2704374632da4372d22be7aa4763e0 100644
--- a/src/compiler/simplified-operator.h
+++ b/src/compiler/simplified-operator.h
@@ -159,7 +159,7 @@ class SimplifiedOperatorBuilder final : public ZoneObject {
   const Operator* StringLessThanOrEqual();
   const Operator* StringToNumber();
 
-  const Operator* ChangeSmiToInt32();
+  const Operator* ChangeTaggedSignedToInt32();
   const Operator* ChangeTaggedToInt32();
   const Operator* ChangeTaggedToUint32();
   const Operator* ChangeTaggedToFloat64();