| Issue |
61421
|
| Summary |
[AMDGPU] MachineCSE related issue
|
| Labels |
backend:AMDGPU
|
| Assignees |
|
| Reporter |
jdoerfert
|
Split from #60937 since this issue disappears if MachineCSE is disabled but the other issue does not.
[repro.tar.gz](https://github.com/llvm/llvm-project/files/10963429/repro.tar.gz)
Two more reproducers. This time I make them run into a trap that they should not run into (see picture).
<img width="641" alt="Screenshot 2023-03-13 at 6 52 59 PM" src=""
Modifying unrelated parts makes it run fine. I assume some reg-alloc or similar issue.
I included two different minimal modifications that make it run, as well as the suprisingly different assembly.
I think with the executable, and a dynamic library build of LLVM w/ OpenMP offload, one can even reproduce the issue on a GFX90a, see README.
@arsenm, @nhaehnle Can you please take a look?
_Originally posted by @jdoerfert in https://github.com/llvm/llvm-project/issues/60937#issuecomment-1467225247_
See also https://github.com/llvm/llvm-project/issues/60937#issuecomment-1468125715
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