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

[Emanuel Peter]

On Wed, 20 Aug 2025 13:39:55 GMT, Bhavana Kilambi <bkilambi at openjdk.org> wrote:

>> test/hotspot/jtreg/compiler/c2/aarch64/TestFloat16Replicate.java line 56:
>> 
>>> 54: 
>>> 55:     public static void main(String args[]) {
>>> 56:         TestFramework.runWithFlags("--add-modules=jdk.incubator.vector", "-XX:-TieredCompilation");
>> 
>> What about a run that runs with TieredCompilation? Would be nice to test other modes as well.
>
> Hi, thanks for your review. I tried but it doesn't trigger c2 compilation (maybe I need to increase `Warmup`?). As my main motivation was to test the generated backend mach nodes from c2 compilation, I run it specifically with `-XX:-TieredCompilation.`

Strange, because the IR/Test framework always triggers C2 compilation... How exactly did it fail  to compile with C2?

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/26589#discussion_r2288237330