arsenm wrote:

> I suspect the long-term change to change the default IR to assume convergent 
> will take some time as it will impact many subprojects. 

Turns out not really, I ran spec with this about 2 years ago and the only 
non-noise change was a mild improvement 

> Would you be OK with me patching the several DCE functions to not drop 
> convergence intrinsics instead? It would solve this issue in practice, 
> allowing us to move forward with addrspace cast legalization.

This is still trying to fix this in a roundabout way. You should be stopping 
the strip of the convergent attribute, not the intrinsic uses that happen to be 
in the function 

https://github.com/llvm/llvm-project/pull/134844
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