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...is a result of modulo scheduling not being tuned or not? Have you seen this type of Copy? Any insights are greatly appreciated. Thanks Ehsan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170626/8561c956/attachment.html>

Hi - I replied to the original sender only by mistake. Sorry about that. When we started working on the pipeliner, and added it before the scheduler, we also were concerned that the scheduler or other passes would undo the work of the pipeliner. The initial thought was that we would add information (using metadata or some other way like you've suggested) to the basic block to tell the