Move feedback slot allocation to post-pass

src/compiler.h

 // Copyright 2012 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_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 217 matching lines @@
 
   void SetFunction(FunctionLiteral* literal) {
     DCHECK(function_ == NULL);
     function_ = literal;
   }
   void PrepareForCompilation(Scope* scope);
   void SetScriptScope(Scope* script_scope) {
     DCHECK(script_scope_ == NULL);
     script_scope_ = script_scope;
   }
+  void EnsureFeedbackVector();
   Handle<TypeFeedbackVector> feedback_vector() const {
     return feedback_vector_;
   }
   void SetCode(Handle<Code> code) { code_ = code; }
   void SetExtension(v8::Extension* extension) {
     DCHECK(!is_lazy());
     extension_ = extension;
   }
   void SetCachedData(ScriptData** cached_data,
                      ScriptCompiler::CompileOptions compile_options) {
@@ skipping 500 matching lines @@
   Zone zone_;
   unsigned info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_