[Bug target/84033] powerpc64le -moptimize-swaps bad code with vec_vbpermq

[brenohl at br dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84033

Breno Leitao <brenohl at br dot ibm.com> changed:

           What    |Removed                     |Added
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                 CC|                            |brenohl at br dot ibm.com

--- Comment #7 from Breno Leitao <brenohl at br dot ibm.com> ---
Hi Alan,

I was not able to read the changelog and understand what are the exact versions
that this bug is fixed. How can I read and get this information?

I am asking this question because mongodb was hitting this issue[1], and the
workaround was disabling optimization[2] during mongodb compilation.

That said, we would like to re-enable the optimized compilation for mongodb[3],
but we need this GCC fix on the distros first, so, I need to know which GCC
version contains this fix and migrating to it prior to the re-enablement of the
Mongodb optimization.

I understand that this fix didn't make the GCC 8 first release, thus, there was
a minor version update on GCC 6, 7 and 8 that contains this fix. Is my
understanding correct?

Thank you,
Breno

[1] https://jira.mongodb.org/browse/SERVER-33395
[2] https://bugs.launchpad.net/ubuntu/+source/mongodb/+bug/1758116
[3] https://bugs.launchpad.net/ubuntu/+source/mongodb/+bug/1758118