[PATCH] D132443: [LSR] Fold terminating condition to other IV when possible

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:6583
 
+static std::tuple<bool, PHINode *, PHINode *>
+canFoldTermCondOfLoop(Loop *L, ScalarEvolution &SE, DominatorTree &DT,
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Looking at this again. Could this be an `Optional<std::pair<PHINode *, PHINode *>>` Then you could `return None` for CantFold.


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  https://reviews.llvm.org/D132443/new/

https://reviews.llvm.org/D132443