Allow setting debugger breakpoints on CompareNilICs

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index d66d97f1337564287bcaf65572357b9523af0880..3cc35e75f0f91f887ecdfe11d495f01159ad76a6 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -1090,6 +1090,15 @@ TEST(DebugStub) {
           Builtins::kKeyedLoadIC_DebugBreak));
 #endif
 
+  CheckDebugBreakFunction(
+      &env,
+      "function f6(a){return a==null;}",
+      "f6",
+      0,
+      v8::internal::RelocInfo::CODE_TARGET,
+      Isolate::Current()->builtins()->builtin(
+          Builtins::kCompareNilIC_DebugBreak));
+
   // Check the debug break code stubs for call ICs with different number of
   // parameters.
   Handle<Code> debug_break_0 = v8::internal::ComputeCallDebugBreak(0);