https://bugs.llvm.org/show_bug.cgi?id=34226

OpenBSD requires the emulated TLS support.

In D98574#2641697, @glaubitz wrote:

-m32 is not supported on OpenBSD at all:

openbsd# echo | gcc -E -dM -m32 -            
:0: error: -m32 is not supported by this configuration
openbsd#

I do not immediately see why the other tests are failing, but at a bare minimum the following test from clang/test/Preprocessor/predefined-arch-macros.c will have to be updated..

ping.

Updated.

Rebased.

Fix the comparison between signed and unsigned values.

@ldionne I don't understand how a Linux specific diff would help with another operating system. I could update this after D94953 goes in and eliminate the first chunk.

ping.

Don't care about the removal of that one line.

Updated diff after moving header up to the top and removing the OpenBSD guard.

In D94205#2493714, @ldionne wrote:

Sorry, I think I had started the review on my phone and forgot to pick it back up. LGTM, do you need commit access?

Anyone?

@dcederman Able to see about getting this in?

@efriedma Eli?

Any chance of seeing review on this?

I'm not really good with coming up with tests, but especially with lld. Any suggestions? Any further comments?

What about reverting this now that you have found this is an issue with the Sun linker?

I spoke to the author of the diff and asked for some feedback. He said...

@jrtc27 ??

Venkatraman?

Is this Ok or is any further testing necessary?

Added provided test.

Any chance of a review of the auto generated tests. Do they look appropriate?

Nothing changed. Just want to rebuild as an unrelated Windows test was broken.

Drop the tests I had copied and modified from X86 as it looks like the existing tests are probably good enough and update the failing tests with update_llc_test_checks.py.

I was wondering why we had not seen any issues like this but your followup post clarified the situation.

Looks reasonable. I'm a little surprised I don't see this in the FreeBSD driver. What about FreeBSD, NetBSD and DragonFly?

ping.

ping.

ping.

OpenBSD 6.7 is just wrapping up and will be released in a few days. We have switched to Clang for our PowerPC system compiler and thus libc++. It should be Ok to remove OpenBSD from that bit of code.

In D77672#1967700, @MaskRay wrote:

My immediate reaction is "isn't Sparc an abandoned architecture?" See https://en.wikipedia.org/wiki/SPARC and https://lists.freebsd.org/pipermail/freebsd-sparc64/2020-January/010192.html

Though, no objection. You may still need some basic tests, similar to test/ELF/ppc32-* I tried hard to keep the number of tests small yet complete. Does sparc64 use TLS variant 2?

Now that 10 is out, any chance of getting some movement on this to resolve this ABI issue with 32-bit PowerPC?