RFR: 8321021: RISC-V: C2 VectorUCastB2X [v3]

[Hamlin Li]

> Hi,
> Can you help to review the patch to add support for some vector intrinsics?
> Also complement various tests on riscv.
> Thanks.
> 
> ## Test
> test/hotspot/jtreg/compiler/vectorapi/
> test/hotspot/jtreg/compiler/vectorization/

Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:

  fix typo

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18040/files
  - new: https://git.openjdk.org/jdk/pull/18040/files/594927fb..646955f0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18040&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18040&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/18040.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18040/head:pull/18040

PR: https://git.openjdk.org/jdk/pull/18040