[clang] [llvm] [CodeGen] Port AtomicExpand to new Pass Manager (PR #71220)

[Matt Arsenault via cfe-commits]

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@@ -340,7 +342,31 @@ bool AtomicExpand::runOnFunction(Function &F) {
   return MadeChange;
 }
 
-bool AtomicExpand::bracketInstWithFences(Instruction *I, AtomicOrdering Order) {
+bool AtomicExpandLegacy::runOnFunction(Function &F) {
+  i
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arsenm wrote:

Stray character 

https://github.com/llvm/llvm-project/pull/71220