RFR: 8288043: Optimize FP to word/sub-word integral type conversion on X86 AVX2 platforms [v4]

[Jatin Bhateja]

On Sat, 17 Sep 2022 01:00:48 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

> Could you please enable the compiler/vectorapi/VectorFPtoIntCastTest.java for AVX2 platforms? Currently they are only run for AVX512DQ platforms.

I have added missing casting cases AVX/AVX2 and AVX512 targets in existing comprehensive test for [casting](test/hotspot/jtreg/compiler/vectorapi/reshape/utils/TestCastMethods.java.)

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PR: https://git.openjdk.org/jdk/pull/9748