[turbofan] Add length operand to LoadElement and StoreElement.

src/compiler/generic-node-inl.h

 // Copyright 2013 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_GENERIC_NODE_INL_H_
 #define V8_COMPILER_GENERIC_NODE_INL_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/generic-graph.h"
@@ skipping 160 matching lines @@
   DCHECK(index >= 0 && index < InputCount());
   // TODO(turbofan): Optimize this implementation!
   AppendInput(zone, InputAt(InputCount() - 1));
   for (int i = InputCount() - 1; i > index; --i) {
     ReplaceInput(i, InputAt(i - 1));
   }
   ReplaceInput(index, to_insert);
 }
 
 template <class B, class S>
+void GenericNode<B, S>::RemoveInput(int index) {
+  DCHECK(index >= 0 && index < InputCount());
+  // TODO(turbofan): Optimize this implementation!
+  for (; index < InputCount() - 1; ++index) {
+    ReplaceInput(index, InputAt(index + 1));
+  }
+  TrimInputCount(InputCount() - 1);
+}
+
+template <class B, class S>
 void GenericNode<B, S>::AppendUse(Use* use) {
   use->next = NULL;
   use->prev = last_use_;
   if (last_use_ == NULL) {
     first_use_ = use;
   } else {
     last_use_->next = use;
   }
   last_use_ = use;
   ++use_count_;
@@ skipping 46 matching lines @@
     ++use;
     ++input;
   }
   return result;
 }
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_GENERIC_NODE_INL_H_