[PATCH] D18867: [IndVarSimplify] Eliminate zext of a signed IV when the IV is known to be non-negative

Li Huang via llvm-commits llvm-commits at lists.llvm.org
Mon Jun 20 08:34:01 PDT 2016

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lihuang added a comment.

Using -loop-rotate works for these cases, as the "%add = add nsw i32 %i.0, 2" is brought to loop header and "nsw" is propagated. Thank you Sanjoy!


http://reviews.llvm.org/D18867

Previous message: [llvm] r273160 - Revert "[LoopIdiom] Don't remove dead operands manually"
Next message: [llvm] r273161 - Removing an unused switch statement that has only a default label. This happens to also eliminate an instance of switchception. NFC intended.
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