[jdk18] RFR: 8277964: ClassCastException with no stack trace is thrown with -Xcomp in method handle invocation [v2]

[David Holmes]

On Wed, 15 Dec 2021 17:56:23 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> A proper fix for this is to use the catchException combination. However, that introduces significant cold startup performance regression. JDK-8278447 tracks the work to address the performance regression using catchException and asSpreader combinator. It may require significant work and refactoring which is risky for JDK 18. 
>> 
>> It is proposed to implement a workaround in C2 to white list the relevant methods (all methods in sun.invoke.util.ValueConversions class) not to omit stack trace when exception is thrown in them.
>> 
>> Added new regression test. Tested tier1-3.
>
> Vladimir Kozlov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Removed boot classloader check

Looks good.

Thanks,
David

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

Marked as reviewed by dholmes (Reviewer).

PR: https://git.openjdk.java.net/jdk18/pull/27