[llvm] [CHR] Skip regions containing convergent calls (PR #180882)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,179 @@
+; Test that CHR does not transform regions containing convergent or
+; noduplicate calls, following the same guard as SimplifyCFG.
+;
----------------
arsenm wrote:

Missing REQUIRES target 

https://github.com/llvm/llvm-project/pull/180882