VectorICs: megamorphic keyed loads in crankshaft don't need a vector.

src/hydrogen.h

 // Copyright 2012 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_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
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   }
   AstContext* call_context() const {
     return function_state()->call_context();
   }
   HBasicBlock* function_return() const {
     return function_state()->function_return();
   }
   TestContext* inlined_test_context() const {
     return function_state()->test_context();
   }
+  Handle<SharedFunctionInfo> current_shared_info() const {
+    return current_info()->shared_info();
+  }
+  TypeFeedbackVector* current_feedback_vector() const {
+    return current_shared_info()->feedback_vector();
+  }
   void ClearInlinedTestContext() {
     function_state()->ClearInlinedTestContext();
   }
   LanguageMode function_language_mode() {
     return function_state()->compilation_info()->language_mode();
   }
 
 #define FOR_EACH_HYDROGEN_INTRINSIC(F) \
   F(IsSmi)                             \
   F(IsArray)                           \
@@ skipping 861 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_