[llvm-branch-commits] [llvm] release/21.x: [POWERPC] Fixes an error in the handling of the MTVSRBMI instruction for big-endian (#151565) (PR #154138)

[Amy Kwan via llvm-branch-commits]

amy-kwan wrote:

FYI - requesting backport as the original issue (https://github.com/llvm/llvm-project/commit/45909ec469cea4bc479d5c7d0731dec8e8e91112) is also in the LLVM 21.x

https://github.com/llvm/llvm-project/pull/154138