[turbofan] Remove explicit context specialization from inlining.

src/compiler/js-inlining.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/compiler/js-inlining.h"
 
 #include "src/ast.h"
 #include "src/ast-numbering.h"
 #include "src/compiler/all-nodes.h"
 #include "src/compiler/ast-graph-builder.h"
 #include "src/compiler/common-operator.h"
-#include "src/compiler/js-context-specialization.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/operator-properties.h"
 #include "src/full-codegen.h"
 #include "src/parser.h"
 #include "src/rewriter.h"
 #include "src/scopes.h"
 
 namespace v8 {
@@ skipping 252 matching lines @@
   Graph graph(info.zone());
   JSGraph jsgraph(info.isolate(), &graph, jsgraph_->common(),
                   jsgraph_->javascript(), jsgraph_->machine());
 
   // The inlinee specializes to the context from the JSFunction object.
   // TODO(turbofan): We might want to load the context from the JSFunction at
   // runtime in case we only know the SharedFunctionInfo once we have dynamic
   // type feedback in the compiler.
   AstGraphBuilder graph_builder(local_zone_, &info, &jsgraph);
   graph_builder.CreateGraph(true, false);
-  GraphReducer graph_reducer(local_zone_, &graph);
-  JSContextSpecializer context_specializer(&graph_reducer, &jsgraph);
-  graph_reducer.AddReducer(&context_specializer);
-  graph_reducer.ReduceGraph();
 
   CopyVisitor visitor(&graph, jsgraph_->graph(), info.zone());
   visitor.CopyGraph();
 
   Node* start = visitor.GetCopy(graph.start());
   Node* end = visitor.GetCopy(graph.end());
 
   Node* frame_state = call.frame_state();
   size_t const inlinee_formal_parameters = start->op()->ValueOutputCount() - 3;
   // Insert argument adaptor frame if required.
@@ skipping 10 matching lines @@
 
   // Remember that we inlined this function.
   info_->AddInlinedFunction(info.shared_info());
 
   return InlineCall(node, frame_state, start, end);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8