RFR: 8353786: Migrate Vector API math library support to FFM API [v14]

[Vladimir Ivanov]

On Fri, 25 Apr 2025 00:06:28 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Vladimir Ivanov has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Improve comments
>
> src/hotspot/cpu/riscv/riscv.ad line 1947:
> 
>> 1945: // Vector calling convention not yet implemented.
>> 1946: bool Matcher::supports_vector_calling_convention(void) {
>> 1947:   return EnableVectorSupport;
> 
> You might also want to remove the use of `UseVectorStubs` in `Matcher::vector_return_value` at L1951.
> 
> assert(EnableVectorSupport && UseVectorStubs, "sanity");

Good catch. Fixed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24462#discussion_r2059577657