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Diffstat (limited to 'lib/Transforms/Utils/LCSSA.cpp')
-rw-r--r-- | lib/Transforms/Utils/LCSSA.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp index 3f4bad5c51..466136dea7 100644 --- a/lib/Transforms/Utils/LCSSA.cpp +++ b/lib/Transforms/Utils/LCSSA.cpp @@ -73,6 +73,14 @@ namespace { AU.addPreserved<LoopInfo>(); AU.addRequired<DominatorTree>(); AU.addPreserved<ScalarEvolution>(); + AU.addPreserved<DominatorTree>(); + + // Request DominanceFrontier now, even though LCSSA does + // not use it. This allows Pass Manager to schedule Dominance + // Frontier early enough such that one LPPassManager can handle + // multiple loop transformation passes. + AU.addRequired<DominanceFrontier>(); + AU.addPreserved<DominanceFrontier>(); } private: void getLoopValuesUsedOutsideLoop(Loop *L, |