[llvm-branch-commits] [AMDGPU] Set AS8 address width to 48 bits (PR #139419)

[Krzysztof Drewniak via llvm-branch-commits]

https://github.com/krzysz00 commented:

Minor note re the autoupgrade, overall this change makes sense

(and it does mean that, if we can get GEP's "wrapping add on the index bits" behavior working, ptr addrspace(8)` becomes *technically* GEPable, though with the note of "be real hecking careful that the offset is uniform")

https://github.com/llvm/llvm-project/pull/139419