[turbofan] Desugar lookup slot optimization in graph builder.

src/compiler/js-generic-lowering.cc

Index: src/compiler/js-generic-lowering.cc
diff --git a/src/compiler/js-generic-lowering.cc b/src/compiler/js-generic-lowering.cc
index 7cfac1d4c373b71053d521d4b78ea1a952489a6e..7af86889bf946a9a6e8c6a29f367d81b0cf63848 100644
--- a/src/compiler/js-generic-lowering.cc
+++ b/src/compiler/js-generic-lowering.cc
@@ -441,15 +441,14 @@ void JSGenericLowering::LowerJSStoreContext(Node* node) {
 }
 
 
-void JSGenericLowering::LowerJSLoadDynamicGlobal(Node* node) {
-  const DynamicGlobalAccess& access = DynamicGlobalAccessOf(node->op());
+void JSGenericLowering::LowerJSLoadDynamic(Node* node) {
+  const DynamicAccess& access = DynamicAccessOf(node->op());
   Runtime::FunctionId function_id =
       (access.typeof_mode() == NOT_INSIDE_TYPEOF)
           ? Runtime::kLoadLookupSlot
           : Runtime::kLoadLookupSlotNoReferenceError;
   Node* projection = graph()->NewNode(common()->Projection(0), node);
   NodeProperties::ReplaceUses(node, projection, node, node, node);
-  node->RemoveInput(NodeProperties::FirstFrameStateIndex(node) + 1);
   node->RemoveInput(NodeProperties::FirstValueIndex(node));
   node->InsertInput(zone(), 1, jsgraph()->Constant(access.name()));
   ReplaceWithRuntimeCall(node, function_id);
@@ -457,16 +456,6 @@ void JSGenericLowering::LowerJSLoadDynamicGlobal(Node* node) {
 }
 
 
-void JSGenericLowering::LowerJSLoadDynamicContext(Node* node) {
-  const DynamicContextAccess& access = DynamicContextAccessOf(node->op());
-  Node* projection = graph()->NewNode(common()->Projection(0), node);
-  NodeProperties::ReplaceUses(node, projection, node, node, node);
-  node->InsertInput(zone(), 1, jsgraph()->Constant(access.name()));
-  ReplaceWithRuntimeCall(node, Runtime::kLoadLookupSlot);
-  projection->ReplaceInput(0, node);
-}
-
-
 void JSGenericLowering::LowerJSCreate(Node* node) { UNIMPLEMENTED(); }