[llvm] 22cce65 - [LLVM][rtsan] rtsan transform to preserve CFGAnalyses (#102651)

[via llvm-commits]

Author: Chris Apple
Date: 2024-08-09T21:21:06+02:00
New Revision: 22cce65464e4be60554de1af95794766eeb1f63a

URL: https://github.com/llvm/llvm-project/commit/22cce65464e4be60554de1af95794766eeb1f63a
DIFF: https://github.com/llvm/llvm-project/commit/22cce65464e4be60554de1af95794766eeb1f63a.diff

LOG: [LLVM][rtsan] rtsan transform to preserve CFGAnalyses (#102651)

Follow on to #101232, as suggested in the comments, narrow the scope of
the preserved analyses.

Added: 
    

Modified: 
    llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp
index 5663f446613b5..7854cf4f2c625 100644
--- a/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp
@@ -53,7 +53,10 @@ PreservedAnalyses RealtimeSanitizerPass::run(Function &F,
   if (F.hasFnAttribute(Attribute::SanitizeRealtime)) {
     insertCallAtFunctionEntryPoint(F, "__rtsan_realtime_enter");
     insertCallAtAllFunctionExitPoints(F, "__rtsan_realtime_exit");
-    return PreservedAnalyses::none();
+
+    PreservedAnalyses PA;
+    PA.preserveSet<CFGAnalyses>();
+    return PA;
   }
 
   return PreservedAnalyses::all();