[llvm] efd71eb - [LoopLoadElimination] Preserve DT and LI (NFCI)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2023-04-21T14:32:55+02:00
New Revision: efd71ebea4ba34fa3bc4973781495b9e53ceaef9

URL: https://github.com/llvm/llvm-project/commit/efd71ebea4ba34fa3bc4973781495b9e53ceaef9
DIFF: https://github.com/llvm/llvm-project/commit/efd71ebea4ba34fa3bc4973781495b9e53ceaef9.diff

LOG: [LoopLoadElimination] Preserve DT and LI (NFCI)

This pass makes control-flow changes, but only via LoopSimplify
and LoopVersioning utilities, which perserve DT and LI.

Added: 
    

Modified: 
    llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp b/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
index 91a336f8f63c..e32b97e43864 100644
--- a/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
@@ -677,5 +677,7 @@ PreservedAnalyses LoopLoadEliminationPass::run(Function &F,
     return PreservedAnalyses::all();
 
   PreservedAnalyses PA;
+  PA.preserve<DominatorTreeAnalysis>();
+  PA.preserve<LoopAnalysis>();
   return PA;
 }