[llvm-branch-commits] [llvm] [LoongArch] Select VSUBI for add with negative splat immediates (PR #191966)

[Lu Weining via llvm-branch-commits]

SixWeining wrote:

And how about `sub <16 x i8> %a, splat (i8 -1)`?

https://github.com/llvm/llvm-project/pull/191966