[llvm] 8e12451 - [OpenMP][FIX] Ensure not to dereference a nullptr

[Johannes Doerfert via llvm-commits]

Author: Johannes Doerfert
Date: 2023-01-22T20:06:23-08:00
New Revision: 8e124515cdd628a4d147bf10497ecbb537964e0b

URL: https://github.com/llvm/llvm-project/commit/8e124515cdd628a4d147bf10497ecbb537964e0b
DIFF: https://github.com/llvm/llvm-project/commit/8e124515cdd628a4d147bf10497ecbb537964e0b.diff

LOG: [OpenMP][FIX] Ensure not to dereference a nullptr

Added: 
    

Modified: 
    llvm/lib/Transforms/IPO/OpenMPOpt.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Transforms/IPO/OpenMPOpt.cpp b/llvm/lib/Transforms/IPO/OpenMPOpt.cpp
index 95f7ce01441e1..dee2ee2bb3ead 100644
--- a/llvm/lib/Transforms/IPO/OpenMPOpt.cpp
+++ b/llvm/lib/Transforms/IPO/OpenMPOpt.cpp
@@ -2809,7 +2809,8 @@ ChangeStatus AAExecutionDomainFunction::updateImpl(Attributor &A) {
     ED.IsReachedFromAlignedBarrierOnly = true;
     // Aligned barrier collection has to come last.
     ED.clearAssumeInstAndAlignedBarriers();
-    ED.addAlignedBarrier(A, *CB);
+    if (CB)
+      ED.addAlignedBarrier(A, *CB);
   };
 
   auto &LivenessAA =