[turbofan] Properly wire effects for JSLoadContext and JSStoreContext.

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

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-factory.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 643 matching lines @@
 
       Reduction const r2 = Reduce(
           graph()->NewNode(javascript()->LoadContext(1, index, immutable),
                            context, context, effect));
       ASSERT_TRUE(r2.Changed());
       EXPECT_THAT(r2.replacement(),
                   IsLoadField(AccessBuilder::ForContextSlot(index),
                               IsLoadField(AccessBuilder::ForContextSlot(
                                               Context::PREVIOUS_INDEX),
                                           context, effect, graph()->start()),
-                              effect, graph()->start()));
+                              _, graph()->start()));
     }
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // JSStoreContext
 
 
 TEST_F(JSTypedLoweringTest, JSStoreContext) {
@@ skipping 14 matching lines @@
 
       Reduction const r2 =
           Reduce(graph()->NewNode(javascript()->StoreContext(1, index), context,
                                   value, context, effect, control));
       ASSERT_TRUE(r2.Changed());
       EXPECT_THAT(r2.replacement(),
                   IsStoreField(AccessBuilder::ForContextSlot(index),
                                IsLoadField(AccessBuilder::ForContextSlot(
                                                Context::PREVIOUS_INDEX),
                                            context, effect, graph()->start()),
-                               value, effect, control));
+                               value, _, control));
     }
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // JSLoadProperty
 
 
 TEST_F(JSTypedLoweringTest, JSLoadPropertyFromExternalTypedArray) {
@@ skipping 557 matching lines @@
   Node* dummy = graph()->NewNode(javascript()->ToObject(), instanceOf, context,
                                  frame_state, effect, control);
   Reduction r = Reduce(instanceOf);
   ASSERT_FALSE(r.Changed());
   ASSERT_EQ(instanceOf, dummy->InputAt(0));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8