Add an IC for CompareNil operations

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index e7060beee6cccb4d280bab5273c5bc17f3557cd4..394be94a2814ac260f300a1833b0338d17c7766e 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -1264,14 +1264,6 @@ void HUnaryControlInstruction::PrintDataTo(StringStream* stream) {
 }
 
 
-void HIsNilAndBranch::PrintDataTo(StringStream* stream) {
-  value()->PrintNameTo(stream);
-  stream->Add(kind() == kStrictEquality ? " === " : " == ");
-  stream->Add(nil() == kNullValue ? "null" : "undefined");
-  HControlInstruction::PrintDataTo(stream);
-}
-
-
 void HReturn::PrintDataTo(StringStream* stream) {
   value()->PrintNameTo(stream);
   stream->Add(" (pop ");