Towards removing dependency from generic lowering on compilation info.

src/compiler/pipeline.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/pipeline.h"
 
 #include "src/base/platform/elapsed-timer.h"
 #include "src/compiler/ast-graph-builder.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/graph-replay.h"
@@ skipping 167 matching lines @@
     GraphReducer graph_reducer(&graph);
     graph_reducer.AddReducer(&phi_reducer);
     graph_reducer.ReduceGraph();
     // TODO(mstarzinger): Running reducer once ought to be enough for everyone.
     graph_reducer.ReduceGraph();
     graph_reducer.ReduceGraph();
   }
 
   VerifyAndPrintGraph(&graph, "Initial untyped");
 
+  JSContextSpecializer spec(info(), &jsgraph, context_node);
+
   if (FLAG_context_specialization) {
     SourcePositionTable::Scope pos_(&source_positions,
                                     SourcePosition::Unknown());
     // Specialize the code to the context as aggressively as possible.
-    JSContextSpecializer spec(info(), &jsgraph, context_node);
     spec.SpecializeToContext();
     VerifyAndPrintGraph(&graph, "Context specialized");
   }
 
   // Print a replay of the initial graph.
   if (FLAG_print_turbo_replay) {
     GraphReplayPrinter::PrintReplay(&graph);
   }
 
   if (FLAG_turbo_types) {
@@ skipping 14 matching lines @@
       GraphReducer graph_reducer(&graph);
       graph_reducer.AddReducer(&lowering);
       graph_reducer.ReduceGraph();
 
       VerifyAndPrintGraph(&graph, "Lowered typed");
     }
   }
 
   Handle<Code> code = Handle<Code>::null();
   if (SupportedTarget()) {
+    Linkage linkage(info());
     {
       // Lower any remaining generic JSOperators.
       PhaseStats lowering_stats(info(), PhaseStats::CREATE_GRAPH,
                                 "generic lowering");
       SourcePositionTable::Scope pos(&source_positions,
                                      SourcePosition::Unknown());
       MachineOperatorBuilder machine(zone());
-      JSGenericLowering lowering(info(), &jsgraph, &machine);
+      JSGenericLowering lowering(&jsgraph, &spec, &linkage, &machine);
       GraphReducer graph_reducer(&graph);
       graph_reducer.AddReducer(&lowering);
       graph_reducer.ReduceGraph();
 
       VerifyAndPrintGraph(&graph, "Lowered generic");
     }
 
     // Compute a schedule.
     Schedule* schedule = ComputeSchedule(&graph);
     TraceSchedule(schedule);
 
     {
       // Generate optimized code.
       PhaseStats codegen_stats(info(), PhaseStats::CODEGEN, "codegen");
-      Linkage linkage(info());
+
       code = GenerateCode(&linkage, &graph, schedule, &source_positions);
       info()->SetCode(code);
     }
 
     // Print optimized code.
     v8::internal::CodeGenerator::PrintCode(code, info());
   }
 
   if (FLAG_trace_turbo) {
     OFStream os(stdout);
@@ skipping 89 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8