[Bug 278845] OpenMP Patches to prevent locking, hanging and CPU limiting to single core.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D278845

            Bug ID: 278845
           Summary: OpenMP Patches to prevent locking, hanging and CPU
                    limiting to single core.
           Product: Base System
           Version: 14.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: threads
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected]

We worked with LLVM OpenMP development group to get a couple of PR fixes ad=
ded
to fix some big bugs we've been experiencing.=20

Fix#1 - Fixes forked processes from hanging:
https://github.com/llvm/llvm-project/pull/88539
Original issue reported: https://github.com/llvm/llvm-project/issues/86684

Fix#2 - Fixes child processes to use affinity_none. Before they were limite=
d to
using a single cpu core for all child processes.=20
https://github.com/llvm/llvm-project/pull/91391
Original issue reported: https://github.com/llvm/llvm-project/issues/91098

Fix#2 is only needed in version of llvm 16.x and later.  My original issue
shows it's not an issue in 14.x or 15.x. Since FreeBSD 14.0 and 13.3 levera=
ge
16.x and 17.x, this bug was triggered when we upgraded servers to either
release.=20

Hoping we can get both into 14.1 in time for it's upcoming release.

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