RFR: 8350463: AArch64: Add vector rearrange support for small lane count vectors [v4]

[Emanuel Peter]

On Tue, 18 Mar 2025 07:46:17 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

>> test/hotspot/jtreg/compiler/vectorapi/VectorRearrangeTest.java line 307:
>> 
>>> 305:     public static void main(String[] args) {
>>> 306:         TestFramework testFramework = new TestFramework();
>>> 307:         testFramework.setDefaultWarmup(10000)
>> 
>> Oh, I just see that you are modifying the warmup. Is that necessary?
>
> Yes, I think we'd better use a larger warmup to make sure the vector api intrinsics are inlined in C2, so that the IR check can pass.

Did you try without? The default warmup should be sufficient I think. But I could be wrong.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23790#discussion_r2000403368