RFR: 8303279: C2: crash in SubTypeCheckNode::sub() at IGVN split if [v4]

[Roland Westrelin]

On Tue, 27 Jun 2023 16:31:15 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Roland Westrelin has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   review
>
> Looks reasonable.

@vnkozlov @iwanowww @simonis @TobiHartmann thanks for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/14678#issuecomment-1630392539