| Issue |
130102
|
| Summary |
AMDGPU SDWA formation broken by subregister uses
|
| Labels |
backend:AMDGPU,
missed-optimization
|
| Assignees |
frederik-h
|
| Reporter |
arsenm
|
While trying to enable CSE for copies performing subregister extracts, I encounter regressions related to missed SDWA opportunities. Example attached, without sub registers the SDWA is formed. With sub registers, it is missed.
[machine-cse-subreg-breaks-sdwa-formation.mir.zip](https://github.com/user-attachments/files/19108926/machine-cse-subreg-breaks-sdwa-formation.mir.zip)
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