RFR: 8351876: RISC-V: enable and fix some float round tests

[Fei Yang]

On Wed, 12 Mar 2025 17:01:14 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Hi,
> Can you help to review this simple patch?
> It's a follow-up of https://github.com/openjdk/jdk/pull/23985.
> 
> Thanks

test/hotspot/jtreg/compiler/vectorization/TestRoundVectFloat.java line 57:

> 55:   @IR(applyIfPlatform = {"riscv64", "true"},
> 56:       applyIfCPUFeature = {"rvv", "true"},
> 57:       applyIf = {"MaxVectorSize", ">= 32"},

Do you have more details about why a smaller `MaxVectorSize` (Let's say 16) won't work? Thanks.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24015#discussion_r1992504006