RFR: 8364305: Support AVX10 saturating floating point conversion instructions [v9]

[Mohamed Issa]

On Tue, 9 Sep 2025 02:28:45 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> Mohamed Issa has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Check for scalar casting instead of vector casting in tests when disabling vector alignment or compact object headers
>
> test/hotspot/jtreg/compiler/vectorization/runner/ArrayTypeConvertTest.java line 432:
> 
>> 430:         applyIfCPUFeatureAnd = {"avx", "true", "avx10_2", "false"})
>> 431:     @IR(counts = {"cast2DtoX", " >0 "}, phase = CompilePhase.FINAL_CODE,
>> 432:         applyIfCPUFeature = {"avx10_2", "true"})
> 
> Please refer to https://github.com/openjdk/jdk/blob/master/test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java#L2638 for adding MachNode IR node based checks

Thanks, I added some new nodes.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26919#discussion_r2335208252