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

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 582794b8bd559ae18156babd7ce0783acf0719be..00f250a504fed61e726e069e40affee54f2bb01e 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1845,7 +1845,7 @@ Type* ChangeRepresentation(Type* type, Type* rep, Zone* zone) {
 
 }  // namespace
 
-Type* Typer::Visitor::TypeChangeSmiToInt32(Node* node) {
+Type* Typer::Visitor::TypeChangeTaggedSignedToInt32(Node* node) {
   Type* arg = Operand(node, 0);
   // TODO(neis): DCHECK(arg->Is(Type::Signed32()));
   return ChangeRepresentation(arg, Type::UntaggedIntegral32(), zone());