forked from OSchip/llvm-project
2b61e7c68c
The current state of the transform is still not enough to support my motivational pattern, because it has one more "induction variable". I have delayed posting this patch, because originally even just rewriting the loop as countable wasn't enough to nicely transform my motivational pattern, because i expected that extra IV to be rewritten afterwards, but it wasn't happening until i fixed that in D91800. So, this patch allows the 'left-shift until bittest' loop idiom as long as the inserted ops are cheap, and lifts any and all extra use checks on the instructions. Reviewed By: craig.topper Differential Revision: https://reviews.llvm.org/D92754 |
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README.txt
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