[jdk11u-dev] RFR: 8290004: [PPC64] JfrGetCallTrace: assert(_pc != nullptr) failed: must have PC [v2]

[Martin Doerr]

> Backport version from 17u. Adaptation for 11u: `load_acquire` is in class `OrderAccess` instead of `Atomic`.

Martin Doerr has refreshed the contents of this pull request, and previous commits have been removed. Incremental views are not available.

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Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1222/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1222/files/23348ec7..c9a72595

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1222&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1222&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1222.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1222/head:pull/1222

PR: https://git.openjdk.org/jdk11u-dev/pull/1222