[llvm] ISel/AArch64/SVE: custom lower vector ISD::[L]LRINT (PR #89035)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

I have investigated the possibility of lowering ISD::[L]LRINT when only neon is present, and have concluded that it is impossible. I have updated the patch, and renamed the tests appropriately. On neon, there is no custom lowering, and the custom lowering on sve is complete.

https://github.com/llvm/llvm-project/pull/89035