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...l of LLVM's wrapping flags is not poison but instead something akin to the fast-math flags on floating point instructions. > > > John > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150204/a8dbeecb/attachment.html>

On Tue, Feb 3, 2015 at 3:15 AM, Nuno Lopes <nuno.lopes at ist.utl.pt> wrote: > Hi, > > > > Thanks David for putting up this proposal together! > > I like the idea of having poison values behave more like undef (i.e., per > bit, with run-time behavior). > > One of the problems this proposal solves is speculation of 'a && b' into > 'a &