[llvm] [GIsel] import min/max rewrites (PR #188267)

[David Green via llvm-commits]

================
@@ -0,0 +1,92 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
----------------
davemgreen wrote:

This looks like a useful test on it's own, can you move it to llvm/test/CodeGen/AArch64/combine-max-min.ll?

https://github.com/llvm/llvm-project/pull/188267