[compiler] Drop the CompareNilIC.

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index 1189a164616a89d497be2c8199b7a88fda987fbb..d69e4f2cc5988c4aa88858fd437c6ed98b868579 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -3801,10 +3801,11 @@ void FullCodeGenerator::EmitLiteralCompareNil(CompareOperation* expr,
     __ CompareRoot(x0, nil_value);
     Split(eq, if_true, if_false, fall_through);
   } else {
-    Handle<Code> ic = CompareNilICStub::GetUninitialized(isolate(), nil);
-    CallIC(ic, expr->CompareOperationFeedbackId());
-    __ CompareRoot(x0, Heap::kTrueValueRootIndex);
-    Split(eq, if_true, if_false, fall_through);
+    __ JumpIfSmi(x0, if_false);
+    __ Ldr(x0, FieldMemOperand(x0, HeapObject::kMapOffset));
+    __ Ldrb(x1, FieldMemOperand(x0, Map::kBitFieldOffset));
+    __ TestAndSplit(x1, 1 << Map::kIsUndetectable, if_false, if_true,
+                    fall_through);
   }
 
   context()->Plug(if_true, if_false);