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flamedoge
on Dec 19, 2016
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Why physicists still use Fortran
Compilers are afraid to optimize around possible UB, even though they can.
wumpus
on Dec 19, 2016
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Having worked with key people from the SGI compiler team, and then competed with Intel / PGI / Sun / gcc on x86, I totally disagree.
flamedoge
on Dec 19, 2016
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I guess I should've looked when I said "Compilers". I only skimmed two and one of them is LLVM.
flamedoge
on Dec 19, 2016
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I totally see UB as a blessing in disguise for optimizer.
wumpus
on Dec 19, 2016
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Usually, yeah. The art is making it debuggable, when the user accidentally strays into UB and needs help not doing that.
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