RFR: 8361582: AArch64: Some ConH values cannot be replicated with SVE [v7]

[Emanuel Peter]

On Wed, 20 Aug 2025 14:11:20 GMT, Bhavana Kilambi <bkilambi at openjdk.org> wrote:

>> This type of pattern/code shape where one of the inputs is a constant is already being tested in https://github.com/openjdk/jdk/blob/e912977a6687917ed45520c4d8558ebe630e3f52/test/hotspot/jtreg/compiler/vectorization/TestFloat16VectorOperations.java#L335
>> 
>> I have created this one specifically for aarch64 to ensure both the backend mach nodes are correctly being generated.
>
> I can test this on x86 but do you think this test is required to be placed out of `aarch64` folder and make it available for all architectures when the same pattern is already being tested in the above testcase for all architectures?

If it is just about checking backend mach nodes with an IR rule, then why not just add the IR rule to the existing test?

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PR Review Comment: https://git.openjdk.org/jdk/pull/26589#discussion_r2289935826