Several tests fail on FreeBSD with clang-15

[yurivict]

See the log here.

Version: 0.7.4
clang-15
FreeBSD 13.2

[mr-c]

Hello @yurivict ; thanks for the report. I've never seen SIMDe tested on FreeBSD before. Did a previous release pass the tests?

I'm seeing some SIGBUS errors, that is because FreeBSD doesn't allow unaligned reads/writes like Linus does, correct? I would accept patches to fix that, of course. And a CI config to prevent regressions.

[yurivict]

simde-0.7.2 had fewer failures:

  7/874 x86/avx512/abs/emul/c              ERROR           0.39s   killed by signal 11 SIGSEGV
  8/874 x86/avx512/abs/native/c            ERROR           0.28s   killed by signal 11 SIGSEGV
  9/874 x86/avx512/abs/emul/cpp            ERROR           0.90s   killed by signal 11 SIGSEGV
 10/874 x86/avx512/abs/native/cpp          ERROR           0.86s   killed by signal 11 SIGSEGV
371/874 arm/neon/abs/emul/c                ERROR           0.81s   killed by signal 11 SIGSEGV
373/874 arm/neon/abs/emul/cpp              ERROR           0.59s   killed by signal 11 SIGSEGV

So this is a regression.

[yurivict]

I'm seeing some SIGBUS errors, that is because FreeBSD doesn't allow unaligned reads/writes like Linus does, correct?

No, FreeBSD allows unaligned reads just like Linux does.

[mr-c]

Hmm.. I'm not able to reproduce using a VM: https://github.com/mr-c/simde/actions/runs/4918777831/jobs/8785545316#step:3:7057

Maybe you can correct my configuration to reproduce what you are seeing: https://github.com/mr-c/simde/blob/ci/gha/freebsd/.github/workflows/ci.yml#L36

[yurivict]

In a VM please have an updated ports tree:

git clone https://git.FreeBSD.org/ports.git /usr/ports

Then:

1. cd /usr/ports/devel/simde
2. make test

This should reproduce the problem.

[mr-c]

@yurivict Thanks. make test tried to build the ninja package from source, which failed, so I'll try again using the binary package for meson and its dependencies

https://github.com/mr-c/simde/actions/runs/4922970383/jobs/8794277813#step:3:5370

[mr-c]

Seems that VM is FreeBSD 13.1 which is using clang-13 which has extra complaints https://github.com/mr-c/simde/actions/runs/4923301187/jobs/8794964385#step:2:1588

Trying again with -Wno-pass-failed: https://github.com/mr-c/simde/actions/runs/4923955421/jobs/8796401951

[mr-c]

https://github.com/mr-c/simde/actions/runs/4923955421/jobs/8796401951 has a couple "emul" tests failing, but those can be skipped.

@yurivict can you try changing the test command to be something like meson test -C _build --print-errorlogs $(meson test -C _build --list | grep -v emul) ?

[mr-c]

Any other failures appear to be compiler regressions, so I would have to encourage you to file bugs with the clang people, or try -O2 instead.

[mr-c]

@yurivict As show in https://github.com/simd-everywhere/simde/actions/runs/5143791700/jobs/9259255771?pr=1034#step:2:5440 the only failing tests are "emul" tests, when we disable the use of native intrinsincs on the target architecture. As that does not represent real-world usage of SIMDe, I recommend that you skip all those tests: meson test -C _build --print-errorlogs $(meson test -C _build --list | grep -v emul)

Please let me know when the port is updated and I'll merge #1034 to add freebsd to our test matrix

[mr-c]

@yurivict FYI: We got Travis CI working again, and they support testing on FreeBSD 12.1, but I'm guessing that version of FreeBSD is a too old to be useful for CI?

https://docs.travis-ci.com/user/reference/freebsd/

[yurivict]

The FreeBSD version should be 13.2

[mr-c]

@yurivict Can you test again using version 0.8.0-rc2 of SIMDe ? https://github.com/simd-everywhere/simde/releases/tag/v0.8.0-rc2