[jdk17u-dev] RFR: 8284883: JVM crash: guarantee(sect->end() <= sect->limit()) failed: sanity on AVX512

Wed Jun 15 10:00:34 UTC 2022

I backport this for parity with 17.0.5-oracle.

I had to resolve because "8275047: Optimize existing fill stubs for AVX-512 target"
which renames fill**_avx() to fill**() is not in 17.

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Commit messages:
 - Backport cd8709e8e05897d131afba221970c0866b3d126d

Changes: https://git.openjdk.org/jdk17u-dev/pull/469/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=469&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284883
  Stats: 91 lines in 4 files changed: 82 ins; 2 del; 7 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/469.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/469/head:pull/469

PR: https://git.openjdk.org/jdk17u-dev/pull/469