RFR: 8257398: Enhance debug output in Type::check_symmetrical

Mon Nov 30 14:44:55 UTC 2020

On Mon, 30 Nov 2020 10:37:21 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> When working on C2 typesystem changes for project Valhalla, I got annoyed by always having to add debug information for the "meet not commutative" failure in `Type::check_symmetrical`. We should add output similar to the "meet not symmetric" case.
>> 
>> Thanks,
>> Tobias
>
> Looks good.

@iwanowww, @chhagedorn thanks for the reviews!

-------------

PR: https://git.openjdk.java.net/jdk/pull/1513