RFR: 8321014: RISC-V: C2 VectorLoadShuffle [v2]

[Hamlin Li]

> Hi,
> Can you help to review the patch for instrinsic VectorLoadShuffle?
> 
> BTW, without this intrinsic, some other vector api operation does not work as well (e.g. rearrange) on riscv.
> 
> Thanks
> 
> ## Test
> test/jdk/jdk/incubator/vector/
> test/hotspot/jtreg/compiler/vectorapi

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

  add comment

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18835/files
  - new: https://git.openjdk.org/jdk/pull/18835/files/db63a657..b1400b33

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18835&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18835&range=00-01

  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18835.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18835/head:pull/18835

PR: https://git.openjdk.org/jdk/pull/18835