Reland: [Parse] ParseInfo owns the parsing Zone.

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/ast.h"
 #include "src/compilation-info.h"
 #include "src/compiler.h"
 #include "src/compiler/all-nodes.h"
@@ skipping 469 matching lines @@
     } else {
       TRACE(
           "Inlining %s into %s regardless of surrounding try-block to catcher "
           "#%d:%s\n",
           shared_info->DebugName()->ToCString().get(),
           info_->shared_info()->DebugName()->ToCString().get(),
           exception_target->id(), exception_target->op()->mnemonic());
     }
   }
 
-  Zone zone(info_->isolate()->allocator(), ZONE_NAME);
-  ParseInfo parse_info(&zone, shared_info);
+  ParseInfo parse_info(shared_info);
   CompilationInfo info(&parse_info, Handle<JSFunction>::null());
   if (info_->is_deoptimization_enabled()) info.MarkAsDeoptimizationEnabled();
   info.MarkAsOptimizeFromBytecode();
 
   if (!Compiler::EnsureBytecode(&info)) {
     TRACE("Not inlining %s into %s because bytecode generation failed\n",
           shared_info->DebugName()->ToCString().get(),
           info_->shared_info()->DebugName()->ToCString().get());
     if (info_->isolate()->has_pending_exception()) {
       info_->isolate()->clear_pending_exception();
@@ skipping 18 matching lines @@
   // If function was lazily compiled, its literals array may not yet be set up.
   JSFunction::EnsureLiterals(function);
 
   // Create the subgraph for the inlinee.
   Node* start;
   Node* end;
   {
     // Run the BytecodeGraphBuilder to create the subgraph.
     Graph::SubgraphScope scope(graph());
     BytecodeGraphBuilder graph_builder(
-        &zone, shared_info, handle(function->feedback_vector()),
+        parse_info.zone(), shared_info, handle(function->feedback_vector()),
         BailoutId::None(), jsgraph(), call.frequency(), source_positions_,
         inlining_id);
     graph_builder.CreateGraph(false);
 
     // Extract the inlinee start/end nodes.
     start = graph()->start();
     end = graph()->end();
   }
 
   if (exception_target != nullptr) {
@@ skipping 129 matching lines @@
 
 CommonOperatorBuilder* JSInliner::common() const { return jsgraph()->common(); }
 
 SimplifiedOperatorBuilder* JSInliner::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8