[turbofan] Add support for deferred code.

src/compiler/instruction.h

 // Copyright 2014 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_INSTRUCTION_H_
 #define V8_COMPILER_INSTRUCTION_H_
 
 #include <deque>
 #include <iosfwd>
 #include <map>
@@ skipping 777 matching lines @@
     DCHECK(code_end_ >= code_start_);
     return code_end_ - 1;
   }
 
   int32_t code_start() const { return code_start_; }
   void set_code_start(int32_t start) { code_start_ = start; }
 
   int32_t code_end() const { return code_end_; }
   void set_code_end(int32_t end) { code_end_ = end; }
 
+  bool IsDeferred() const { return deferred_; }
+
   BasicBlock::Id id() const { return id_; }
+  BasicBlock::RpoNumber ao_number() const { return ao_number_; }
   BasicBlock::RpoNumber rpo_number() const { return rpo_number_; }
   BasicBlock::RpoNumber loop_header() const { return loop_header_; }
   BasicBlock::RpoNumber loop_end() const {
     DCHECK(IsLoopHeader());
     return loop_end_;
   }
   inline bool IsLoopHeader() const { return loop_end_.IsValid(); }
 
   typedef ZoneVector<BasicBlock::RpoNumber> Predecessors;
   const Predecessors& predecessors() const { return predecessors_; }
   size_t PredecessorCount() const { return predecessors_.size(); }
   size_t PredecessorIndexOf(BasicBlock::RpoNumber rpo_number) const;
 
   typedef ZoneVector<BasicBlock::RpoNumber> Successors;
   const Successors& successors() const { return successors_; }
   size_t SuccessorCount() const { return successors_.size(); }
 
   typedef ZoneVector<PhiInstruction*> PhiInstructions;
   const PhiInstructions& phis() const { return phis_; }
   void AddPhi(PhiInstruction* phi) { phis_.push_back(phi); }
 
  private:
   Successors successors_;
   Predecessors predecessors_;
   PhiInstructions phis_;
   BasicBlock::Id id_;
+  BasicBlock::RpoNumber ao_number_;  // Assembly order number.
   // TODO(dcarney): probably dont't need this.
   BasicBlock::RpoNumber rpo_number_;
   BasicBlock::RpoNumber loop_header_;
   BasicBlock::RpoNumber loop_end_;
-  int32_t code_start_;  // start index of arch-specific code.
-  int32_t code_end_;    // end index of arch-specific code.
+  int32_t code_start_;   // start index of arch-specific code.
+  int32_t code_end_;     // end index of arch-specific code.
+  const bool deferred_;  // Block contains deferred code.
 };
 
 typedef ZoneDeque<Constant> ConstantDeque;
 typedef std::map<int, Constant, std::less<int>,
                  zone_allocator<std::pair<int, Constant> > > ConstantMap;
 
 typedef ZoneDeque<Instruction*> InstructionDeque;
 typedef ZoneDeque<PointerMap*> PointerMapDeque;
 typedef ZoneVector<FrameStateDescriptor*> DeoptimizationVector;
 typedef ZoneVector<InstructionBlock*> InstructionBlocks;
 typedef IntVector NodeToVregMap;
 
 // Represents architecture-specific generated code before, during, and after
 // register allocation.
 // TODO(titzer): s/IsDouble/IsFloat64/
 class InstructionSequence FINAL {
  public:
   static const int kNodeUnmapped = -1;
 
   InstructionSequence(Zone* zone, const Graph* graph, const Schedule* schedule);
 
   int NextVirtualRegister() { return next_virtual_register_++; }
   int VirtualRegisterCount() const { return next_virtual_register_; }
 
   int node_count() const { return static_cast<int>(node_map_.size()); }
 
+  const InstructionBlocks& instruction_blocks() const {
+    return instruction_blocks_;
+  }
+
   int InstructionBlockCount() const {
     return static_cast<int>(instruction_blocks_.size());
   }
 
   InstructionBlock* InstructionBlockAt(BasicBlock::RpoNumber rpo_number) {
     return instruction_blocks_[rpo_number.ToSize()];
   }
 
   int LastLoopInstructionIndex(const InstructionBlock* block) {
     return instruction_blocks_[block->loop_end().ToSize() - 1]
@@ skipping 104 matching lines @@
   DeoptimizationVector deoptimization_entries_;
 };
 
 std::ostream& operator<<(std::ostream& os, const InstructionSequence& code);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_H_