[turbofan] Typer changes to avoid Type representation dimension

src/compiler/code-assembler.cc

Index: src/compiler/code-assembler.cc
diff --git a/src/compiler/code-assembler.cc b/src/compiler/code-assembler.cc
index 7f8e2ffad0e5f4f1a97ed96db9e0adf542aab44f..d25ac15a0e9311412737072c7cfc4cd195a0fb4d 100644
--- a/src/compiler/code-assembler.cc
+++ b/src/compiler/code-assembler.cc
@@ -302,7 +302,8 @@ Node* CodeAssembler::StoreRoot(Heap::RootListIndex root_index, Node* value) {
   DCHECK(Heap::RootCanBeWrittenAfterInitialization(root_index));
   Node* roots_array_start =
       ExternalConstant(ExternalReference::roots_array_start(isolate()));
-  return StoreNoWriteBarrier(MachineRepresentation::kTagged, roots_array_start,
+  return StoreNoWriteBarrier(MachineRepresentation::kTaggedPointer,
+                             roots_array_start,
                              IntPtrConstant(root_index * kPointerSize), value);
 }