[clang] [flang] [llvm] [InstCombine] Canonicalize constant GEPs to i8 source element type (PR #68882)

[Nikita Popov via cfe-commits]

nikic wrote:

@sgundapa Hm, I think the problem may be that while https://github.com/llvm/llvm-project/pull/90802 removes the limitation on the element types, it's still limited to single-index GEPs, while here there are multiple indices. (Assuming this is related to swapping the GEPs at all, I'm stabbing in the dark here.)

https://github.com/llvm/llvm-project/pull/68882