Fix try-finally for dead AST-branches in TurboFan.

src/compiler/control-builders.h

 // Copyright 2013 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.
 
 #ifndef V8_COMPILER_CONTROL_BUILDERS_H_
 #define V8_COMPILER_CONTROL_BUILDERS_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/ast-graph-builder.h"
@@ skipping 14 matching lines @@
   // Interface for break.
   virtual void Break() { UNREACHABLE(); }
 
  protected:
   typedef AstGraphBuilder Builder;
   typedef AstGraphBuilder::Environment Environment;
 
   Zone* zone() const { return builder_->local_zone(); }
   Environment* environment() { return builder_->environment(); }
   void set_environment(Environment* env) { builder_->set_environment(env); }
+  Node* the_hole() const { return builder_->jsgraph()->TheHoleConstant(); }
 
   Builder* builder_;
 };
 
 
 // Tracks control flow for a conditional statement.
 class IfBuilder FINAL : public ControlBuilder {
  public:
   explicit IfBuilder(AstGraphBuilder* builder)
       : ControlBuilder(builder),
@@ skipping 137 matching lines @@
  private:
   Environment* finally_environment_;  // Environment for the 'finally' body.
   Node* token_node_;                  // Node for token in 'finally' body.
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CONTROL_BUILDERS_H_