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 Post subject: Crash on Zen3
PostPosted: Thu Dec 03, 2020 2:03 am 

Joined: Thu Dec 03, 2020 1:55 am
Posts: 3
When trying to run Chao2 on a Ryzen 5900X I get crashes on startup. winter_build_log reads:
Code:
LLVM encountered a fatal error: Cannot select: intrinsic %llvm.x86.sse41.dppd


You can find the dumps here

According to Phoronix:

Quote:
Also, auto-detection for Zen 3 isn't yet wired up.


If you are selecting -march=native equivalent when calling LLVM libraries to compile winter a workaround would be (somehow) detecting Zen3 and manually passing in znver2.


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 Post subject: Re: Crash on Zen3
PostPosted: Tue Dec 08, 2020 11:14 am 

Joined: Mon Jun 19, 2017 1:51 pm
Posts: 195
Hi, Yeah that should be fixed now, what version of Chaotica are you running?


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 Post subject: Re: Crash on Zen3
PostPosted: Thu Dec 17, 2020 2:54 pm 

Joined: Thu Dec 17, 2020 2:45 pm
Posts: 1
I am also getting this same error using a new system build with a Ryzen 5950x, a RTX 3090 GPU with both the studio drivers and the gaming drivers, and using a clean install of Windows 10. This was one of the first programs that I installed after the drivers. I have tried 2.0.35 and many older versions. Chaotica 1.5 does work.

I have already submitted the error log.

I am looking forward to running Chaotica 2 on this machine.


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 Post subject: Re: Crash on Zen3
PostPosted: Fri Dec 18, 2020 8:12 pm 

Joined: Thu Dec 03, 2020 1:55 am
Posts: 3
Windows 2.0.35, both the msi installer and the portable package don't work. I've tried re-downloading just now to confirm.


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 Post subject: Re: Crash on Zen3
PostPosted: Tue Dec 22, 2020 9:15 am 

Joined: Mon Jun 19, 2017 1:51 pm
Posts: 195
Ok I think I have a fix for this, new builds coming soon.


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 Post subject: Re: Crash on Zen3
PostPosted: Tue Jan 05, 2021 1:14 pm 

Joined: Thu Dec 03, 2020 1:55 am
Posts: 3
Downloaded the new build, now it works nicely. Out of curiosity, what was the issue?


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 Post subject: Re: Crash on Zen3
PostPosted: Tue Jan 05, 2021 1:26 pm 

Joined: Mon Jun 19, 2017 1:51 pm
Posts: 195
LLVM doesn't know the type of CPU and falls back to thinking it's something that doesn't support a certain instruction (DPPS).


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