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...n towards undefined behavior, but I don't have a good feel for LLVM's overall design for undefined behavior, poison values, etc. > Dan > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20121101/45a2d48d/attachment.html>

On Tue, Oct 30, 2012 at 8:28 PM, Michael Ilseman <milseman at apple.com> wrote: > > This is similar to how gcc defines *-fno-signed-zeros:* > "Allow optimizations for floating point arithmetic that ignore the > signedness of zero. IEEE arithmetic specifies the behavior of distinct > +0.0 and -0.0 values, which then prohibits simplification of expressions > such as