[llvm] [PowerPC] Pre-commit test case to ensure that milicode is not used for memcmp, but instead a library call is used on AIX OS. (PR #146948)

[Lei Huang via llvm-commits]

================
@@ -0,0 +1,26 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -verify-machineinstrs -mcpu=pwr9 -ppc-asm-full-reg-names -mtriple=powerpc-ibm-aix < %s | \
+; RUN:   FileCheck %s --check-prefix=CHECK-AIX-32-P9
----------------
lei137 wrote:

Run lines for powerpc-unknown-linux-gnu?

https://github.com/llvm/llvm-project/pull/146948