[turbofan] Stand-alone deferred block splitting - full.

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 1067 matching lines @@
         return false;
     }
   }
 
   Instruction* GetBlockStart(RpoNumber rpo) const;
 
   typedef InstructionDeque::const_iterator const_iterator;
   const_iterator begin() const { return instructions_.begin(); }
   const_iterator end() const { return instructions_.end(); }
   const InstructionDeque& instructions() const { return instructions_; }
+  int LastInstructionIndex() const {
+    return static_cast<int>(instructions().size()) - 1;
+  }
 
   Instruction* InstructionAt(int index) const {
     DCHECK(index >= 0);
     DCHECK(index < static_cast<int>(instructions_.size()));
     return instructions_[index];
   }
 
   Isolate* isolate() const { return isolate_; }
   const ReferenceMapDeque* reference_maps() const { return &reference_maps_; }
   Zone* zone() const { return zone_; }
@@ skipping 105 matching lines @@
 
 
 std::ostream& operator<<(std::ostream& os,
                          const PrintableInstructionSequence& code);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_H_