[llvm] [AArch64][NEON] Add famax/famin codegen patterns (PR #103027)

[Paul Walker via llvm-commits]

================
@@ -0,0 +1,207 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=aarch64 -mattr=+faminmax -verify-machineinstrs %s -o - | FileCheck %s
+; RUN: llc -mtriple=aarch64 -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK-NO-FAMINMAX
+
----------------
paulwalker-arm wrote:

I have and always will disagree with this.  I think RUN lines should be minimised to show the relevant part of the testing.  If a test depends on multiple triples then sure add them to the RUN line.  If, like it is for the majority of cases, the triple is not relevant then it doesn't belong on the RUN line.

https://github.com/llvm/llvm-project/pull/103027