[llvm] [DAGCombiner] Ensure poison-generating flags are stripped in `freeze` op (PR #114582)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,40 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=arm-linux-gnueabi -mcpu=arm1022e -mattr=armv5te -o - %s | FileCheck %s
----------------
arsenm wrote:

Pretty sure this would need to be +armv5te, does this print a parse warning? 

https://github.com/llvm/llvm-project/pull/114582