Revert of [turbofan] Optimize string "length" property access based on types.

test/unittests/compiler/js-typed-lowering-unittest.cc

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index ca2a4a9ec44e73a87e950d71e46dce6fb36bc9a6..a12d79f02bb4ca24c3b384055cb9f0c960208ca8 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -874,11 +874,7 @@
 }
 
 
-// -----------------------------------------------------------------------------
-// JSLoadGlobal
-
-
-TEST_F(JSTypedLoweringTest, JSLoadGlobalConstants) {
+TEST_F(JSTypedLoweringTest, JSLoadNamedGlobalConstants) {
   Handle<String> names[] = {
       Handle<String>(isolate()->heap()->undefined_string(), isolate()),
       Handle<String>(isolate()->heap()->infinity_string(), isolate()),
@@ -906,31 +902,6 @@
 
     ASSERT_TRUE(r.Changed());
     EXPECT_THAT(r.replacement(), matches[i]);
-  }
-}
-
-
-// -----------------------------------------------------------------------------
-// JSLoadNamed
-
-
-TEST_F(JSTypedLoweringTest, JSLoadNamedStringLength) {
-  VectorSlotPair feedback;
-  Unique<Name> name = Unique<Name>::CreateImmovable(factory()->length_string());
-  Node* const receiver = Parameter(Type::String(), 0);
-  Node* const vector = Parameter(Type::Internal(), 1);
-  Node* const context = UndefinedConstant();
-  Node* const effect = graph()->start();
-  Node* const control = graph()->start();
-  TRACED_FOREACH(LanguageMode, language_mode, kLanguageModes) {
-    Reduction const r = Reduce(
-        graph()->NewNode(javascript()->LoadNamed(name, feedback, language_mode),
-                         receiver, vector, context, EmptyFrameState(),
-                         EmptyFrameState(), effect, control));
-    ASSERT_TRUE(r.Changed());
-    EXPECT_THAT(r.replacement(),
-                IsLoadField(AccessBuilder::ForStringLength(zone()), receiver,
-                            effect, control));
   }
 }