[turbofan] Add support for inlining of builtins.

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 <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 432 matching lines @@
   }
 };
 
 
 struct InliningPhase {
   static const char* phase_name() { return "inlining"; }
 
   void Run(PipelineData* data, Zone* temp_zone) {
     SourcePositionTable::Scope pos(data->source_positions(),
                                    SourcePosition::Unknown());
-    JSInliner inliner(temp_zone, data->info(), data->jsgraph());
+    JSInliner inliner(data->info()->is_inlining_enabled()
+                          ? JSInliner::kGeneralInlining
+                          : JSInliner::kBuiltinsInlining,
+                      temp_zone, data->info(), data->jsgraph());
     GraphReducer graph_reducer(data->graph(), temp_zone);
     AddReducer(data, &graph_reducer, &inliner);
     graph_reducer.ReduceGraph();
   }
 };
 
 
 struct TyperPhase {
   static const char* phase_name() { return "typer"; }
 
@@ skipping 444 matching lines @@
 
   Run<EarlyControlReductionPhase>();
   RunPrintAndVerify("Early Control reduced", true);
 
   if (info()->is_context_specializing()) {
     // Specialize the code to the context as aggressively as possible.
     Run<ContextSpecializerPhase>();
     RunPrintAndVerify("Context specialized", true);
   }
 
-  if (info()->is_inlining_enabled()) {
+  if (info()->is_builtin_inlining_enabled() || info()->is_inlining_enabled()) {
     Run<InliningPhase>();
     RunPrintAndVerify("Inlined", true);
   }
 
   if (FLAG_print_turbo_replay) {
     // Print a replay of the initial graph.
     GraphReplayPrinter::PrintReplay(data.graph());
   }
 
   // Bailout here in case target architecture is not supported.
@@ skipping 266 matching lines @@
 
   if (FLAG_trace_turbo && !data->MayHaveUnverifiableGraph()) {
     TurboCfgFile tcf(data->isolate());
     tcf << AsC1VAllocator("CodeGen", data->register_allocator());
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8