[PATCH] D103255: [LV] Mark increment of main vector loop induction variable as NUW.

Max Kazantsev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon May 31 02:28:03 PDT 2021


mkazantsev added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:3085
+  //
+  // If the tail is not folded, we know that End - Start >= Step (either
+  // statically or through the minimum iteration checks). We also know that both
----------------
Just to clarify, what exactly is the semantics of `End` here? Is it last used value of IV or the last computed value (that may be not used)?


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  https://reviews.llvm.org/D103255/new/

https://reviews.llvm.org/D103255



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