[clang] [flang] [llvm] [InstCombine] Canonicalize GEP source element types (PR #180745)

[Nikita Popov via llvm-commits]

nikic wrote:

> What happens when i8 itself is over-aligned?

i8 is not allowed to be over-aligned. From LangRef:

> For i8, the `<abi>` value must equal 8, that is, i8 must be naturally aligned.

https://github.com/llvm/llvm-project/pull/180745