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

test/unittests/compiler/change-lowering-unittest.cc

Index: test/unittests/compiler/change-lowering-unittest.cc
diff --git a/test/unittests/compiler/change-lowering-unittest.cc b/test/unittests/compiler/change-lowering-unittest.cc
index 32c4716eb0d86b8a8f1425f42ea9dbb7379daeae..a5856554f3f0782ff9c29e6a65923c48b13067c8 100644
--- a/test/unittests/compiler/change-lowering-unittest.cc
+++ b/test/unittests/compiler/change-lowering-unittest.cc
@@ -132,14 +132,6 @@ TARGET_TEST_P(ChangeLoweringCommonTest, ChangeInt31ToTagged) {
   EXPECT_THAT(r.replacement(), IsChangeInt32ToSmi(value));
 }
 
-TARGET_TEST_P(ChangeLoweringCommonTest, ChangeTaggedToInt32WithTaggedSigned) {
-  Node* value = Parameter(Type::TaggedSigned());
-  Reduction r =
-      Reduce(graph()->NewNode(simplified()->ChangeTaggedToInt32(), value));
-  ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(r.replacement(), IsChangeSmiToInt32(value));
-}
-
 TARGET_TEST_P(ChangeLoweringCommonTest, ChangeTaggedToInt32WithTaggedNumber) {
   Node* value =
       Parameter(Type::Intersect(Type::TaggedPointer(), Type::Number(), zone()));
@@ -150,16 +142,6 @@ TARGET_TEST_P(ChangeLoweringCommonTest, ChangeTaggedToInt32WithTaggedNumber) {
                                    IsLoadHeapNumber(value, graph()->start())));
 }
 
-
-TARGET_TEST_P(ChangeLoweringCommonTest, ChangeTaggedToUint32WithTaggedSigned) {
-  Node* value = Parameter(Type::TaggedSigned());
-  Reduction r =
-      Reduce(graph()->NewNode(simplified()->ChangeTaggedToUint32(), value));
-  ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(r.replacement(), IsChangeSmiToInt32(value));
-}
-
-
 TARGET_TEST_P(ChangeLoweringCommonTest, ChangeTaggedToUint32WithTaggedPointer) {
   Node* value =
       Parameter(Type::Intersect(Type::TaggedPointer(), Type::Number(), zone()));