Second set of changes for implementation of stack map support.

vm/code_generator_ia32.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_CODE_GENERATOR_IA32_H_
 #define VM_CODE_GENERATOR_IA32_H_
 
 #ifndef VM_CODE_GENERATOR_H_
 #error Do not include code_generator_ia32.h directly; use code_generator.h.
 #endif
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
 #include "vm/parser.h"
 
 namespace dart {
 
 // Forward declarations.
 class Assembler;
 class AstNode;
 class CodeGenerator;
+class DescriptorList;
 class SourceLabel;
+class StackmapBuilder;
 
 
 class CodeGeneratorState : public StackResource {
  public:
   explicit CodeGeneratorState(CodeGenerator* codegen);
   virtual ~CodeGeneratorState();
 
   CodeGeneratorState* parent() const { return parent_; }
 
   AstNode* root_node() const { return root_node_; }
@@ skipping 48 matching lines @@
 
   CodeGeneratorState* state() const { return state_; }
   void set_state(CodeGeneratorState* state) { state_ = state; }
 
   // Add exception handler table to code.
   void FinalizeExceptionHandlers(const Code& code);
 
   // Add pc descriptors to code.
   void FinalizePcDescriptors(const Code& code);
 
+  // Add stack maps to code.
+  void FinalizeStackmaps(const Code& code);
+
   // Add local variable descriptors to code.
   void FinalizeVarDescriptors(const Code& code);
 
   // Allocate and return an arguments descriptor.
   // Let 'num_names' be the length of 'optional_arguments_names'.
   // Treat the first 'num_arguments - num_names' arguments as positional and
   // treat the following 'num_names' arguments as named optional arguments.
   static const Array& ArgumentsDescriptor(
       int num_arguments,
       const Array& optional_arguments_names);
 
   virtual bool IsOptimizing() const {
     return false;
   }
 
   void GenerateReturnEpilog(ReturnNode* node);
 
   // Return true if the VM may optimize functions.
   static bool CanOptimize();
 
  private:
   // TODO(srdjan): Remove the friendship once the two compilers are properly
   // structured.
   friend class OptimizingCodeGenerator;
 
   // Forward declarations.
-  class DescriptorList;
   class HandlerList;
 
   // Return true if intrinsification was completed and no other code
   // needs to be generated.
   virtual bool TryIntrinsify() { return false; }
   virtual void GeneratePreEntryCode();
   void GenerateLegacyEntryCode();
   void GenerateEntryCode();
   void GenerateLoadVariable(Register dst, const LocalVariable& local);
   void GeneratePushVariable(const LocalVariable& variable, Register scratch);
@@ skipping 74 matching lines @@
                             intptr_t token_index);
 
   void set_context_level(intptr_t value) { context_level_ = value; }
   intptr_t context_level() const { return context_level_; }
 
   Assembler* assembler_;
   const ParsedFunction& parsed_function_;
   intptr_t locals_space_size_;
   CodeGeneratorState* state_;
   DescriptorList* pc_descriptors_list_;
+  StackmapBuilder* stackmap_builder_;
   HandlerList* exception_handlers_list_;
   int try_index_;
   // The runtime context level is only incremented when a new context is
   // allocated and chained to the list of contexts.
   intptr_t context_level_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CodeGenerator);
 };
 
 }  // namespace dart
 
 #endif  // VM_CODE_GENERATOR_IA32_H_