[llvm-branch-commits] [llvm] [AArch64][PAC] Skip llvm.ptrauth.blend intrinsic in GVN PRE (PR #147815)

[Anatoly Trosinenko via llvm-branch-commits]

atrosinenko wrote:

After more testing, I found out that at least SimplifyCFG pass can introduce the same pattern by sinking calls to `@llvm.ptrauth.blend`. For that reason, other approach is implemented in #150226: instead of rejecting blend intrinsics in GVN PRE specifically, fix these patterns right before ISel in CodeGenPrepare irrespective of which pass introduced them.

https://github.com/llvm/llvm-project/pull/147815