[llvm-branch-commits] [llvm] release/18.x: [AArch64][SelectionDAG] Mask for SUBS with multiple users cannot be elided (#90911) (PR #91151)

[Tom Stellard via llvm-branch-commits]

tstellar wrote:

@davemgreen What do you think about backporting this?

https://github.com/llvm/llvm-project/pull/91151