[llvm] 4f663cc - [LoopPeel] Make sure PeelLast is always initialized.

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2025-05-15T22:33:10+01:00
New Revision: 4f663cca15f2b53c2bc6a84d1b1f5bd81679356d

URL: https://github.com/llvm/llvm-project/commit/4f663cca15f2b53c2bc6a84d1b1f5bd81679356d
DIFF: https://github.com/llvm/llvm-project/commit/4f663cca15f2b53c2bc6a84d1b1f5bd81679356d.diff

LOG: [LoopPeel] Make sure PeelLast is always initialized.

Make sure PeelLast is initialized on all paths.

Should fix MSan bootstrap failures
     https://lab.llvm.org/buildbot/#/builders/164/builds/9992
     https://lab.llvm.org/buildbot/#/builders/94/builds/7158

Fixup after https://github.com/llvm/llvm-project/pull/139551.

Added: 
    

Modified: 
    llvm/lib/Transforms/Utils/LoopPeel.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Utils/LoopPeel.cpp b/llvm/lib/Transforms/Utils/LoopPeel.cpp
index f15252b5f77e1..99aac24ca67e7 100644
--- a/llvm/lib/Transforms/Utils/LoopPeel.cpp
+++ b/llvm/lib/Transforms/Utils/LoopPeel.cpp
@@ -596,6 +596,7 @@ void llvm::computePeelCount(Loop *L, unsigned LoopSize,
   // TTI.getPeelingPreferences or by the flag -unroll-peel-count.
   unsigned TargetPeelCount = PP.PeelCount;
   PP.PeelCount = 0;
+  PP.PeelLast = false;
   if (!canPeel(L))
     return;