[turbofan] Unify Smi checking for Check(Internalized)String.

src/compiler/simplified-lowering.cc

Index: src/compiler/simplified-lowering.cc
diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
index c9fda35b365eb110b66384fbf7d773537b9e1710..15fcab55df0b19365a75b2fd2cf72e42065a5f6c 100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -2282,7 +2282,7 @@ class RepresentationSelector {
                     MachineRepresentation::kTaggedPointer);
           if (lower()) DeferReplacement(node, node->InputAt(0));
         } else {
-          VisitUnop(node, UseInfo::AnyTagged(),
+          VisitUnop(node, UseInfo::CheckedHeapObjectAsTaggedPointer(),
                     MachineRepresentation::kTaggedPointer);
         }
         return;
@@ -2323,7 +2323,7 @@ class RepresentationSelector {
                     MachineRepresentation::kTaggedPointer);
           if (lower()) DeferReplacement(node, node->InputAt(0));
         } else {
-          VisitUnop(node, UseInfo::AnyTagged(),
+          VisitUnop(node, UseInfo::CheckedHeapObjectAsTaggedPointer(),
                     MachineRepresentation::kTaggedPointer);
         }
         return;