[llvm-branch-commits] [llvm] [AArch64][PAC] Rework discriminator analysis in AUT and AUTPAC (PR #146489)

[Anatoly Trosinenko via llvm-branch-commits]

atrosinenko wrote:

By introducing `AUTxMxN` and `AUTPACxMxN` like it is done in #132857, it should be possible to get rid of custom selector code for `AUT` and `AUTPAC` duplicated in DAGISel and GlobalISel - this can be replaced with tablegenerated patterns and unified post-processing at the MachineInstr level.

https://github.com/llvm/llvm-project/pull/146489