[llvm-branch-commits] [llvm] [AArch64][ISel] Select constructive SVE2 ext instruction (PR #151730)

[Paul Walker via llvm-branch-commits]

paulwalker-arm wrote:

Would it be better to start by adding `movpfrx` for `ext`? At least for some cores these are fused and so you can get the free move without introducing this [potential issue](https://github.com/llvm/llvm-project/pull/151729/files/ebcb4929004ae3f08b2ca3d5d246f29aa73600e1#diff-6291e4657dea1f4fecdcb9dc96bfb014f79d4c617f080b2f033943e52732cf69).

https://github.com/llvm/llvm-project/pull/151730