remove equality kind from compare nil ic

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 60edbb7c8be2ce052e797380de8f533a9e3cc066..e7f8dc0d771fe231a8404550b31ce1f8813d0b6e 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -1698,7 +1698,6 @@ HValue* HGraphBuilder::BuildCloneShallowArray(HContext* context,
 
 void HGraphBuilder::BuildCompareNil(
     HValue* value,
-    EqualityKind kind,
     CompareNilICStub::Types types,
     Handle<Map> map,
     int position,
@@ -1733,9 +1732,7 @@ void HGraphBuilder::BuildCompareNil(
       // emitted below is the actual monomorphic map.
       BuildCheckMap(value, map);
     } else {
-      if (kind == kNonStrictEquality) {
-        if_nil.Deopt();
-      }
+      if_nil.Deopt();
     }
   }
 
@@ -9921,19 +9918,22 @@ void HOptimizedGraphBuilder::HandleLiteralCompareNil(CompareOperation* expr,
   ASSERT(!HasStackOverflow());
   ASSERT(current_block() != NULL);
   ASSERT(current_block()->HasPredecessor());
-  EqualityKind kind =
-      expr->op() == Token::EQ_STRICT ? kStrictEquality : kNonStrictEquality;
   HIfContinuation continuation;
   CompareNilICStub::Types types;
-  if (kind == kStrictEquality) {
-    types.Add((nil == kNullValue) ? CompareNilICStub::NULL_TYPE :
-                                    CompareNilICStub::UNDEFINED);
-  } else {
-    types = CompareNilICStub::Types(expr->compare_nil_types());
-    if (types.IsEmpty()) types = CompareNilICStub::Types::FullCompare();
+  if (expr->op() == Token::EQ_STRICT) {
+    IfBuilder if_nil(this);
+    if_nil.If<HCompareObjectEqAndBranch>(
+        value, (nil == kNullValue) ? graph()->GetConstantNull()
+                                   : graph()->GetConstantUndefined());
+    if_nil.Then();
+    if_nil.Else();
+    if_nil.CaptureContinuation(&continuation);
+    return ast_context()->ReturnContinuation(&continuation, expr->id());
   }
+  types = CompareNilICStub::Types(expr->compare_nil_types());
+  if (types.IsEmpty()) types = CompareNilICStub::Types::FullCompare();
   Handle<Map> map_handle = expr->map();
-  BuildCompareNil(value, kind, types, map_handle,
+  BuildCompareNil(value, types, map_handle,
                   expr->position(), &continuation);
   return ast_context()->ReturnContinuation(&continuation, expr->id());
 }