[compiler] Drop the CompareNilIC.

src/runtime/runtime.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_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/base/platform/time.h"
 #include "src/objects.h"
@@ skipping 969 matching lines @@
 #define FOR_EACH_INTRINSIC_RETURN_TRIPLE(F) \
   F(ForInPrepare, 1, 3)
 
 // Most intrinsics are implemented in the runtime/ directory, but ICs are
 // implemented in ic.cc for now.
 #define FOR_EACH_INTRINSIC_IC(F)             \
   F(BinaryOpIC_Miss, 2, 1)                   \
   F(BinaryOpIC_MissWithAllocationSite, 3, 1) \
   F(CallIC_Miss, 3, 1)                       \
   F(CompareIC_Miss, 3, 1)                    \
-  F(CompareNilIC_Miss, 1, 1)                 \
   F(ElementsTransitionAndStoreIC_Miss, 5, 1) \
   F(KeyedLoadIC_Miss, 4, 1)                  \
   F(KeyedLoadIC_MissFromStubFailure, 4, 1)   \
   F(KeyedStoreIC_Miss, 5, 1)                 \
   F(KeyedStoreIC_MissFromStubFailure, 5, 1)  \
   F(KeyedStoreIC_Slow, 5, 1)                 \
   F(LoadElementWithInterceptor, 2, 1)        \
   F(LoadIC_Miss, 4, 1)                       \
   F(LoadIC_MissFromStubFailure, 4, 1)        \
   F(LoadPropertyWithInterceptor, 3, 1)       \
@@ skipping 192 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_