Add an IC for CompareNil operations

src/stub-cache.h

Index: src/stub-cache.h
diff --git a/src/stub-cache.h b/src/stub-cache.h
index 02bb541bd92455f25b09c11e151d88609be6ed9f..8022584eed8e0c2e7737a20abfd9148c47ea7898 100644
--- a/src/stub-cache.h
+++ b/src/stub-cache.h
@@ -30,6 +30,7 @@
 
 #include "allocation.h"
 #include "arguments.h"
+#include "code-stubs.h"
 #include "ic-inl.h"
 #include "macro-assembler.h"
 #include "objects.h"
@@ -78,6 +79,12 @@ class StubCache {
                               Handle<JSObject> holder);
 
   Handle<Code> FindIC(Handle<Name> name,
+                      Handle<Map> stub_holder_map,
+                      Code::Kind kind,
+                      Code::StubType type,
+                      Code::ExtraICState extra_state = Code::kNoExtraICState);
+
+  Handle<Code> FindIC(Handle<Name> name,
                       Handle<JSObject> stub_holder,
                       Code::Kind kind,
                       Code::StubType type,
@@ -271,6 +278,11 @@ class StubCache {
 
   // ---
 
+  Handle<Code> ComputeCompareNil(Handle<Map> receiver_map,
+                                 CompareNilICStub::Types types);
+
+  // ---
+
   Handle<Code> ComputeLoadElementPolymorphic(MapHandleList* receiver_maps);
   Handle<Code> ComputeStoreElementPolymorphic(MapHandleList* receiver_maps,
                                               KeyedAccessStoreMode store_mode,