RFR: 8290066: Remove KNL specific handling for new CPU target check in IR annotation [v2]

[Jatin Bhateja]

> - Newly added annotations query the CPU feature using white box API which returns the list of features enabled during VM initialization.
> - With JVM flag UseKNLSetting, during VM initialization AVX512 features not supported by KNL target are disabled, thus we do not need any special handling for KNL in newly introduced IR annotations (applyCPUFeature, applyCPUFeatureOr, applyCPUFeatureAnd).
> 
> Please review and share your feedback.
> 
> Best Regards,
> Jatin

Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:

  8290066: Removing newly added white listed options.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9452/files
  - new: https://git.openjdk.org/jdk/pull/9452/files/923abfd0..c7036cde

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9452&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9452&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9452.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9452/head:pull/9452

PR: https://git.openjdk.org/jdk/pull/9452