Trivial MacOS compiler warning

[Aleksey Shipilev]

On 02/01/2018 10:46 AM, Lennart Börjeson wrote:
> 
>> 1 feb. 2018 kl. 10:32 skrev Aleksey Shipilev <shade at redhat.com <mailto:shade at redhat.com>>:
>>
> ...
>> Thanks! Is that the only warning we have during the Mac OS build?
>>
> 
> No, there's also a compiler error when building fast-debug (which I'd like to have to bring you some
> meaningful tracebacks for some Shenandoah-crashes I get), but I am unsure if this is upstream or not:
> 
> ERROR: Build failed for target 'default (exploded-image)' in configuration
> 'macosx-x86_64-normal-server-fastdebug' (exit code 2) 
> Stopping sjavac server
> 
> === Output from failing command(s) repeated here ===
> * For target hotspot_variant-server_libjvm_objs_loopPredicate.o:
> /Users/lennartb/RaT/openJDK/shenandoah-jdk10/src/hotspot/share/opto/loopPredicate.cpp:1018:71:
> error: ordered comparison between pointer and zero ('const TypeInt *' and 'int')
>     assert(rng->Opcode() == Op_LoadRange || _igvn.type(rng)->is_int() >= 0, "must be");
>                                             ~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~

Yes, this is our assert. I think we have mismerged a part of this fix:
  http://hg.openjdk.java.net/shenandoah/jdk10/rev/1c9cefa2a443

Updated:
  http://cr.openjdk.java.net/~shade/shenandoah/build/macos-1/webrev.02/

Thanks,
-Aleksey