[turbofan] Optimize tagged conversion based on type.

src/compiler/representation-change.h

Index: src/compiler/representation-change.h
diff --git a/src/compiler/representation-change.h b/src/compiler/representation-change.h
index 94d37d2589ed006018489a5a93bd7bfb83f2753b..b4975bc9e305c872d179cba20a33534a2a0bb6e3 100644
--- a/src/compiler/representation-change.h
+++ b/src/compiler/representation-change.h
@@ -133,6 +133,8 @@ class RepresentationChanger final {
                   Type* output_type, MachineRepresentation use);
   Node* MakeTruncatedInt32Constant(double value);
   Node* InsertChangeFloat32ToFloat64(Node* node);
+  Node* InsertChangeFloat64ToInt32(Node* node);
+  Node* InsertChangeFloat64ToUint32(Node* node);
   Node* InsertChangeTaggedToFloat64(Node* node);
 
   JSGraph* jsgraph() const { return jsgraph_; }