[llvm] [AArch64][GlobalISel] Preserve scalar type when widening atomic G_STORE (PR #216162)

[David Green via llvm-commits]

https://github.com/davemgreen approved this pull request.

Could you add a mir test showing the types? Maybe into llvm/test/CodeGen/AArch64/GlobalISel/legalize-non-pow2-load-store.mir.

Otherwise LGTM. Another scalar type off the list.

https://github.com/llvm/llvm-project/pull/216162