Optimize functions on a second thread.

src/hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1693 matching lines @@
 
 class HGlobalValueNumberer BASE_EMBEDDED {
  public:
   explicit HGlobalValueNumberer(HGraph* graph, CompilationInfo* info)
       : graph_(graph),
         info_(info),
         removed_side_effects_(false),
         block_side_effects_(graph->blocks()->length(), graph->zone()),
         loop_side_effects_(graph->blocks()->length(), graph->zone()),
         visited_on_paths_(graph->zone(), graph->blocks()->length()) {
-    ASSERT(!info->isolate()->heap()->IsAllocationAllowed());
+#ifdef DEBUG
+    if (FLAG_parallel_recompilation) {
+      ASSERT(
+          info->isolate()->optimizing_compiler_thread()->IsOptimizerThread() ||
+          !info->isolate()->heap()->IsAllocationAllowed());
+    }
+#endif
     block_side_effects_.AddBlock(GVNFlagSet(), graph_->blocks()->length(),
                                  graph_->zone());
     loop_side_effects_.AddBlock(GVNFlagSet(), graph_->blocks()->length(),
                                 graph_->zone());
   }
 
   // Returns true if values with side effects are removed.
   bool Analyze();
 
  private:
@@ skipping 1286 matching lines @@
   }
 }
 
 
 HGraph* HGraphBuilder::CreateGraph() {
   graph_ = new(zone()) HGraph(info());
   if (FLAG_hydrogen_stats) HStatistics::Instance()->Initialize(info());
 
   {
     HPhase phase("H_Block building");
-    CompilationHandleScope handle_scope(info());
     current_block_ = graph()->entry_block();
 
     Scope* scope = info()->scope();
     if (scope->HasIllegalRedeclaration()) {
       Bailout("function with illegal redeclaration");
       return NULL;
     }
     if (scope->calls_eval()) {
       Bailout("function calls eval");
       return NULL;
@@ skipping 40 matching lines @@
       HReturn* instr = new(zone()) HReturn(graph()->GetConstantUndefined());
       current_block()->FinishExit(instr);
       set_current_block(NULL);
     }
   }
 
   return graph();
 }
 
 bool HGraph::Optimize(SmartArrayPointer<char>* bailout_reason) {
-  NoHandleAllocation no_handles;
-  AssertNoAllocation no_gc;
-
   *bailout_reason = SmartArrayPointer<char>();
   OrderBlocks();
   AssignDominators();
 
 #ifdef DEBUG
   // Do a full verify after building the graph and computing dominators.
   Verify(true);
 #endif
 
   PropagateDeoptimizingMark();
@@ skipping 6478 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal