[llvm] [PowerPC] Custom Lower ABDU using branchless carry (PR #182704)

[Lei Huang via llvm-commits]

================
@@ -1,22 +1,68 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
----------------
lei137 wrote:

If you want to change how the checks are generated for this test, it's best to do a NFC commit to update the test first so it's easier to see the changes introduced by your patch.

https://github.com/llvm/llvm-project/pull/182704