Simplfy handling of exits from scoped blocks.

src/full-codegen.cc

 // Copyright 2011 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 833 matching lines @@
     PrepareForBailout(expr, state);
     // Forwarding bailouts to children is a one shot operation. It should have
     // been processed at this point.
     ASSERT(forward_bailout_pending_ == NULL);
   }
 }
 
 
 void FullCodeGenerator::VisitBlock(Block* stmt) {
   Comment cmnt(masm_, "[ Block");
-  Breakable nested_statement(this, stmt);
+  NestedBlock nested_block(this, stmt);
   SetStatementPosition(stmt);
 
   Scope* saved_scope = scope();
   if (stmt->block_scope() != NULL) {
     { Comment cmnt(masm_, "[ Extend block context");
       scope_ = stmt->block_scope();
       __ Push(scope_->GetSerializedScopeInfo());
       PushFunctionArgumentForContextAllocation();
       __ CallRuntime(Runtime::kPushBlockContext, 2);
       StoreToFrameField(StandardFrameConstants::kContextOffset,
                         context_register());
     }
     { Comment cmnt(masm_, "[ Declarations");
       VisitDeclarations(scope_->declarations());
     }
   }
   PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS);
   VisitStatements(stmt->statements());
   scope_ = saved_scope;
-  __ bind(nested_statement.break_label());
+  __ bind(nested_block.break_label());
   PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS);
 }
 
 
 void FullCodeGenerator::VisitExpressionStatement(ExpressionStatement* stmt) {
   Comment cmnt(masm_, "[ ExpressionStatement");
   SetStatementPosition(stmt);
   VisitForEffect(stmt->expression());
 }
 
@@ skipping 507 matching lines @@
   }
 
   return false;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal