[compiler-rt] [rtsan] Add exit statistics (PR #109885)

[Chris Apple via llvm-commits]

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@@ -44,9 +45,15 @@ static InitializationState GetInitializationState() {
       atomic_load(&rtsan_initialized, memory_order_acquire));
 }
 
+static void RtsanAtexit() { PrintStatisticsSummary(); }
+
 static auto OnViolationAction(DiagnosticsInfo info) {
   return [info]() {
-    __rtsan::PrintDiagnostics(info);
+    if (flags().print_stats_on_exit)
+      IncrementTotalErrorCount();
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cjappl wrote:

Is it more costly to always do the check, or just always increment a relaxed atomic?

https://github.com/llvm/llvm-project/pull/109885