[clang] [llvm] [BasicAA] Do not decompose past casts with different index width (PR #119365)

[Nikita Popov via cfe-commits]

nikic wrote:

@bjope I believe the standard solution to that is to add your own AA pass, see e.g. AMDGPUAAResult and NVPTXAAResult which both do addrspace-based AA.

https://github.com/llvm/llvm-project/pull/119365