[llvm] [PowerPC] Check ResNo at end of BitPermutationSelector::Select32 (PR #151429)

[Nemanja Ivanovic via llvm-commits]

================
@@ -0,0 +1,18 @@
+; RUN: llc -mtriple=powerpc-unknown-openbsd < %s | FileCheck %s
----------------
nemanjai wrote:

Could you please use the script to produce the checks. It is important to show that both values produced by the pre-inc load survive (i.e. the loaded value is returned so it also has a use).

https://github.com/llvm/llvm-project/pull/151429