RFR: 8358749: Fix input checks in Vector API intrinsics

[Aleksey Shipilev]

We have been carrying this patch in Leyden/premain for a while: https://github.com/openjdk/leyden/commit/7faed7fc5c8e1bbd9a16ab22673a77099396179c. I believe it deserves to be in mainline. I polished it a little further.

It is _mostly_ a cleanup, but there are also new checks, on the paths where we do take constants off the arguments. In those cases, I believe the alternative is compiler SEGV-ing.

Additional testing:
 - [x] Linux x86_64 server fastdebug, `hotspot_vector_1 hotspot_vector_2`
 - [x] Linux x86_64 server fastdebug, `jdk_vector`

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Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk/pull/25673/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25673&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8358749
  Stats: 50 lines in 1 file changed: 21 ins; 0 del; 29 mod
  Patch: https://git.openjdk.org/jdk/pull/25673.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25673/head:pull/25673

PR: https://git.openjdk.org/jdk/pull/25673