[LLVMdev] Dependence Analysis [was: Flow-Sensitive AA]
regehr at cs.utah.edu
Fri Aug 22 20:18:20 PDT 2008
> before and it hurts about 3-5 without high level loop
> opts/vectorization on. With them on, they do roughly nothing in the
> presence of -fwrapv because you can't determine bounds of any non
> trivial loop.
Very interesting, thanks! Before hearing this I'd have said that
Java-style overflow is the right language design, but if this makes loop
optimizations impossible that is not so good.
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