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On 7 August 2014 20:52, Keno Fischer <kfischer at college.harvard.edu> wrote: > One more update: Since the code generated by the bitcast wasn't ideal > and we were afraid to loose vectorization, etc., we ended up going > with fsub -0.0, x, which for some reason unlike fsub 0.0, x, seems to > be have appropriately at all optimization levels. That's because "fsub 0.0,

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