RFR: 8350609: Cleanup unknown unwind opcode (0xB) for windows

[Dhamoder Nalla]

On Thu, 20 Mar 2025 20:13:08 GMT, Dhamoder Nalla <dhanalla at openjdk.org> wrote:

>>> Did you get to test these functions for correctness, possibly using jtreg or some other tests ?
>> 
>> Yes, we have validated the Jtreg Tier 1 tests, including vector-specific tests under /test/jdk/incubator/vector.
>
>> @dhanalla As @vivdesh asked above: do you have a regression test for this?
>> 
>> You also have this warning above:
>> 
>> Warning ⚠️ Found leading lowercase letter in issue title for 8350609: cleanup unknown unwind opcode (0xB) for windows
> I addressed the warning, and regarding regression tests, I have validated the Jtreg Tier 1 tests, including vector-specific tests under /test/jdk/incubator/vector.

> @dhanalla Thanks for fixing the waring and running some tests!
> 
> From my understanding, those tests passed before your patch here, correct? If so, then I'm wondering if there could be a regression test for this "unknown unwind opcode", that fails before your patch and passes with your patch? How feasible is that?

Thanks @eme64,
We are just cleaning up the unknown unwind codes that are not required. The unwind instructions in the .text section remain untouched. 
The only difference we see after this change is that the output of 'dumpbin.exe /unwindinfo jsvml.dll' will no longer display any unknown unwind opcodes identified in the DLL corresponding to these methods.

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PR Comment: https://git.openjdk.org/jdk/pull/23707#issuecomment-2744094395