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by malft
1123 days ago
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If you are familiar with that paper, I'm a little confused by the results section. If I'm reading p01 from figure 7 correctly, the "before" is x&(x-1) and the "after" is a single instruction x&(x<<1). What am I doing wrong? (The other two wins listed are "recognize the Hacker's Delight trick and replace it with the straight-forward implementation a human would write", which I like.) |
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