RESOLVED FIXED256569
Fix signed division bias for power-of-two divisor in BBQ JIT
https://bugs.webkit.org/show_bug.cgi?id=256569
Summary Fix signed division bias for power-of-two divisor in BBQ JIT
David Degazio
Reported 2023-05-09 18:58:45 PDT
rdar://108073980 BBQ JIT currently has special instruction selection when dividing by a power of two - it'll try and use a mask or a shift. However, these operations need a bit of extra help if the dividend is a negative integer, and the current implementation is incorrect, sometimes yielding incorrect results.
Attachments
David Degazio
Comment 1 2023-05-10 09:59:34 PDT
EWS
Comment 2 2023-05-10 12:50:21 PDT
Committed 263925@main (acb670a0a6d0): <https://commits.webkit.org/263925@main> Reviewed commits have been landed. Closing PR #13698 and removing active labels.
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