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...problem of earlier passes, like Reassociate and GVN, dropping flags, and allows code to be rewritten based on SCEV without losing the invariants. -Andy -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131003/816705ad/attachment.html>

On 10/03/2013 06:55 PM, Andrew Trick wrote: > > On Oct 3, 2013, at 7:15 AM, Michele Scandale <michele.scandale at gmail.com> wrote: > >> On 10/03/2013 01:22 AM, Andrew Trick wrote: >>> >>> I’m not sure how to make sense of an NUW flag coming from a sub. >>> >>> NSW is just a misnomer for signed overflow. SCEV canonicalizes sub a,b to add