[jdk19] Integrated: 8290004: [PPC64] JfrGetCallTrace: assert(_pc != nullptr) failed: must have PC

[Martin Doerr]

On Fri, 8 Jul 2022 11:14:14 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> We must read last_Java_sp first memory ordering wise. Otherwise, last_Java_pc can be 0.
> Note: Writer side already uses release semantics, see javaFrameAnchor_ppc.hpp.
> 
> Setting pc to `*(sp + 2)` is no longer needed. Frame constructor does that in `setup()`.

This pull request has now been integrated.

Changeset: cb6e9cb7
Author:    Martin Doerr <mdoerr at openjdk.org>
URL:       https://git.openjdk.org/jdk19/commit/cb6e9cb7286f609dec1fe1157bf95afc503870a9
Stats:     15 lines in 2 files changed: 0 ins; 13 del; 2 mod

8290004: [PPC64] JfrGetCallTrace: assert(_pc != nullptr) failed: must have PC

Reviewed-by: rrich, lucy

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PR: https://git.openjdk.org/jdk19/pull/124