[Bug tree-optimization/83651] [7/8 regression] 20% slowdown of linux kernel AES cipher

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83651

--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
(In reply to Arnd Bergmann from comment #4)

> I'd suggest sticking with the libressl test case from comment 1, and
> ignoring the kernel version until the libressl one is fully understood. It
> seems very likely that fixing one will also address the other.

Alright, let's start with libressl which is user-space.

> Are you able to start with the test procedure from comment 1, or do you need
> something that can be scripted better, e.g. in a single C file?

abulafia:/tmp/portable [master]$ ./autogen.sh
pulling upstream openbsd source
Cloning into 'openbsd'...
...
copying manpages
configure.ac:32: error: possibly undefined macro: AC_PROG_LIBTOOL
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
autoreconf: /usr/bin/autoconf failed with exit status: 1

Perhaps this is sensitive to the autoconf version.  I am running 2.69 on Fedora
27.

But I think a single C file would be easier.  Everyone's running a different
(probably Linux) OS variant around here.

Thanks.