FlowGraphCompiler is not a visitor any longer. Start consolidating shared code between the x64 and …

runtime/vm/flow_graph_compiler_shared.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_FLOW_GRAPH_COMPILER_SHARED_H_
+#define VM_FLOW_GRAPH_COMPILER_SHARED_H_
+
+#include "vm/allocation.h"
+#include "vm/assembler.h"
+#include "vm/code_descriptors.h"
+#include "vm/growable_array.h"
+
+namespace dart {
+
+class BlockEntryInstr;
+class ExceptionHandlerList;
+class ParsedFunction;
+
+class FlowGraphCompilerShared : public ValueObject {
+ public:
+  explicit FlowGraphCompilerShared(const ParsedFunction& parsed_function,
+                                   intptr_t num_blocks);
+
+  virtual ~FlowGraphCompilerShared();
+
+  // Constructor is lighweight, major initialization work should occur here.
+  // This makes it easier to measure time spent in the compiler.
+  void InitCompiler();
+
+  const ParsedFunction& parsed_function() const { return parsed_function_; }
+  DescriptorList* pc_descriptors_list() const {
+    return pc_descriptors_list_;
+  }
+
+  // Returns assembler label associated with the given block entry.
+  Label* GetBlockLabel(BlockEntryInstr* block_entry) const;
+  void AddExceptionHandler(intptr_t try_index, intptr_t pc_offset);
+
+  void FinalizeExceptionHandlers(const Code& code);
+  void FinalizePcDescriptors(const Code& code);
+  void FinalizeStackmaps(const Code& code);
+  void FinalizeVarDescriptors(const Code& code);
+
+  struct BlockInfo : public ZoneAllocated {
+   public:
+    BlockInfo() : label() { }
+
+    Label label;
+  };
+
+  const GrowableArray<BlockInfo*>& block_info() const { return block_info_; }
+
+ private:
+  const ParsedFunction& parsed_function_;
+  ExceptionHandlerList* exception_handlers_list_;
+  DescriptorList* pc_descriptors_list_;
+  StackmapBuilder* stackmap_builder_;
+  const intptr_t num_blocks_;
+  GrowableArray<BlockInfo*> block_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(FlowGraphCompilerShared);
+};
+
+
+}  // namespace dart
+
+
+#endif  // VM_FLOW_GRAPH_COMPILER_SHARED_H_