Revert of [turbofan] Remove left-over change bits from ChangeLowering.

test/unittests/compiler/simplified-operator-reducer-unittest.cc

Index: test/unittests/compiler/simplified-operator-reducer-unittest.cc
diff --git a/test/unittests/compiler/simplified-operator-reducer-unittest.cc b/test/unittests/compiler/simplified-operator-reducer-unittest.cc
index eec39abb42b1d7ba8c6c2676266f3f8bc4975d9e..eed25f4b1c6b40657759262a0bc9ff46c5907edd 100644
--- a/test/unittests/compiler/simplified-operator-reducer-unittest.cc
+++ b/test/unittests/compiler/simplified-operator-reducer-unittest.cc
@@ -150,54 +150,60 @@
 
 
 // -----------------------------------------------------------------------------
-// ChangeTaggedToBit
-
-TEST_F(SimplifiedOperatorReducerTest, ChangeBitToTaggedWithChangeTaggedToBit) {
-  Node* param0 = Parameter(0);
-  Reduction reduction = Reduce(graph()->NewNode(
-      simplified()->ChangeBitToTagged(),
-      graph()->NewNode(simplified()->ChangeTaggedToBit(), param0)));
-  ASSERT_TRUE(reduction.Changed());
-  EXPECT_EQ(param0, reduction.replacement());
-}
-
-TEST_F(SimplifiedOperatorReducerTest, ChangeBitToTaggedWithZeroConstant) {
+// ChangeBoolToBit
+
+
+TEST_F(SimplifiedOperatorReducerTest, ChangeBitToBoolWithChangeBoolToBit) {
+  Node* param0 = Parameter(0);
+  Reduction reduction = Reduce(graph()->NewNode(
+      simplified()->ChangeBitToBool(),
+      graph()->NewNode(simplified()->ChangeBoolToBit(), param0)));
+  ASSERT_TRUE(reduction.Changed());
+  EXPECT_EQ(param0, reduction.replacement());
+}
+
+
+TEST_F(SimplifiedOperatorReducerTest, ChangeBitToBoolWithZeroConstant) {
   Reduction reduction = Reduce(
-      graph()->NewNode(simplified()->ChangeBitToTagged(), Int32Constant(0)));
+      graph()->NewNode(simplified()->ChangeBitToBool(), Int32Constant(0)));
   ASSERT_TRUE(reduction.Changed());
   EXPECT_THAT(reduction.replacement(), IsFalseConstant());
 }
 
-TEST_F(SimplifiedOperatorReducerTest, ChangeBitToTaggedWithOneConstant) {
+
+TEST_F(SimplifiedOperatorReducerTest, ChangeBitToBoolWithOneConstant) {
   Reduction reduction = Reduce(
-      graph()->NewNode(simplified()->ChangeBitToTagged(), Int32Constant(1)));
+      graph()->NewNode(simplified()->ChangeBitToBool(), Int32Constant(1)));
   ASSERT_TRUE(reduction.Changed());
   EXPECT_THAT(reduction.replacement(), IsTrueConstant());
 }
 
 
 // -----------------------------------------------------------------------------
-// ChangeTaggedToBit
-
-TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToBitWithFalseConstant) {
+// ChangeBoolToBit
+
+
+TEST_F(SimplifiedOperatorReducerTest, ChangeBoolToBitWithFalseConstant) {
   Reduction reduction = Reduce(
-      graph()->NewNode(simplified()->ChangeTaggedToBit(), FalseConstant()));
+      graph()->NewNode(simplified()->ChangeBoolToBit(), FalseConstant()));
   ASSERT_TRUE(reduction.Changed());
   EXPECT_THAT(reduction.replacement(), IsInt32Constant(0));
 }
 
-TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToBitWithTrueConstant) {
-  Reduction reduction = Reduce(
-      graph()->NewNode(simplified()->ChangeTaggedToBit(), TrueConstant()));
+
+TEST_F(SimplifiedOperatorReducerTest, ChangeBoolToBitWithTrueConstant) {
+  Reduction reduction =
+      Reduce(graph()->NewNode(simplified()->ChangeBoolToBit(), TrueConstant()));
   ASSERT_TRUE(reduction.Changed());
   EXPECT_THAT(reduction.replacement(), IsInt32Constant(1));
 }
 
-TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToBitWithChangeBitToTagged) {
-  Node* param0 = Parameter(0);
-  Reduction reduction = Reduce(graph()->NewNode(
-      simplified()->ChangeTaggedToBit(),
-      graph()->NewNode(simplified()->ChangeBitToTagged(), param0)));
+
+TEST_F(SimplifiedOperatorReducerTest, ChangeBoolToBitWithChangeBitToBool) {
+  Node* param0 = Parameter(0);
+  Reduction reduction = Reduce(graph()->NewNode(
+      simplified()->ChangeBoolToBit(),
+      graph()->NewNode(simplified()->ChangeBitToBool(), param0)));
   ASSERT_TRUE(reduction.Changed());
   EXPECT_EQ(param0, reduction.replacement());
 }