Can not deduce type of copy.

[ZuseZ4]

This IR is just what we output from rustc, before running any optimizations. So that's the only location where we can reasonably add typetrees.

https://fwd.gymni.ch/vHLgRl (failing due to unrelated ssues) - it seems the link broke?

In a previous typetree prototype we used to generate typetrees at mem* operations, but they never had any measurable impact.
The memcpy operations failing due to a lack of type information seem to be generated later, maybe during enzyme's preprocessing?
If you manually add typetree at (hopefully not too many) locations, I can try to automate that from rustc.

@wsmoses

dbg_mod.ll.txt

[ZuseZ4]

cc @tgymnich the compiler explorer is on 21.0, but nowadays those are development versions, the release is the .1 version.
The .0 doesn't support dead_on_unwind, so I manually removed it.

https://fwd.gymni.ch/S6ElKj Also both this and the link above became invalid quite quick, the forwarding fails. Maybe an issue with the size of the code, since it was quite large?

[tgymnich]

@ZuseZ4 The links do work for me. Did you disable JavaScript? I can take a look into updating LLVM later today.

[ZuseZ4]

My adblockers only blocked cloudflareinsights.com and allowed gymnich.ch and fwd.gymnich.ch
Also https://api.github.com/_private/browser/stats and https://collector.github.com/github/collect were blocked, but I guess all of these should be ok? JS should work.
The link only leads me to a website showing:

If you are not redirected automatically, follow this "Redirect" link

However, nothing happens when I click the Redirect. When I manually copy the link it seems to be huge, maybe it's too large for firefox to handle? At least it freezes both this browser fenster and my text editor if I try to copy it into it.
When copied to a file, the link is

3.9M Oct 7 03:21 link.txt

Also thanks for updating!

[tgymnich]

@ZuseZ4 llvm 22 (trunk) and 21.1.0 just landed on enzyme ce.