[jdk11u-dev] RFR: 8272493: Suboptimal code generation around Preconditions.checkIndex intrinsic with AVX2

[Goetz Lindenmaier]

I backport this for parity with 11.0.16-oracle.

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Commit messages:
 - Backport 88f0938c943bfacf748ddb0588a301c2cf7e941e

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/1012/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=1012&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272493
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/1012.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/1012/head:pull/1012

PR: https://git.openjdk.java.net/jdk11u-dev/pull/1012