Try/catch in graph builder.

runtime/vm/flow_graph_compiler_x64.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_X64_H_
 #define VM_FLOW_GRAPH_COMPILER_X64_H_
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #error Include flow_graph_compiler.h instead of flow_graph_compiler_x64.h.
 #endif
 
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
 #include "vm/code_generator.h"
 #include "vm/intermediate_language.h"
 
 namespace dart {
 
 class Code;
+class ExceptionHandlerList;
 template <typename T> class GrowableArray;
 class ParsedFunction;
 
 class FlowGraphCompiler : public FlowGraphVisitor {
  public:
   FlowGraphCompiler(Assembler* assembler,
                     const ParsedFunction& parsed_function,
                     const GrowableArray<BlockEntryInstr*>& block_order);
 
   virtual ~FlowGraphCompiler();
@@ skipping 33 matching lines @@
 
 #undef DECLARE_VISIT_COMPUTATION
 #undef DECLARE_VISIT_INSTRUCTION
 
   // Emit code to load a Value into register 'dst'.
   void LoadValue(Register dst, Value* value);
 
   // Emit an instance call.
   void EmitInstanceCall(intptr_t node_id,
                         intptr_t token_index,
+                        intptr_t try_index,
                         const String& function_name,
                         intptr_t argument_count,
                         const Array& argument_names,
                         intptr_t checked_argument_count);
 
   // Emit a static call.
   void EmitStaticCall(intptr_t token_index,
+                      intptr_t try_index,
                       const Function& function,
                       intptr_t argument_count,
                       const Array& argument_names);
 
   // Infrastructure copied from class CodeGenerator.
   void GenerateCall(intptr_t token_index,
+                    intptr_t try_index,
                     const ExternalLabel* label,
                     PcDescriptors::Kind kind);
   void GenerateCallRuntime(intptr_t node_id,
                            intptr_t token_index,
+                           intptr_t try_index,
                            const RuntimeEntry& entry);
   void AddCurrentDescriptor(PcDescriptors::Kind kind,
                             intptr_t node_id,
-                            intptr_t token_index);
+                            intptr_t token_index,
+                            intptr_t try_index);
 
   void GenerateAssertAssignable(intptr_t node_id,
                                 intptr_t token_index,
                                 const AbstractType& dst_type,
                                 const String& dst_name);
 
   void GenerateInstanceOf(intptr_t node_id,
                           intptr_t token_index,
+                          intptr_t try_index,
                           const AbstractType& type,
                           bool negate_result);
 
   void GenerateInstantiatorTypeArguments(intptr_t token_index);
 
   void CopyParameters();
 
   intptr_t StackSize() const;
 
   Assembler* assembler_;
   const ParsedFunction& parsed_function_;
 
   // Compiler specific per-block state.  Indexed by postorder block number
   // for convenience.  This is not the block's index in the block order,
   // which is reverse postorder.
   GrowableArray<BlockInfo*> block_info_;
-
   BlockEntryInstr* current_block_;
-
   DescriptorList* pc_descriptors_list_;
+  ExceptionHandlerList* exception_handlers_list_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_X64_H_