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101882
2012 Apr 17
3
[LLVMdev] InstCombine adds bit masks, confuses self, others
On Tue, Apr 17, 2012 at 1:36 PM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:
> > I am not sure how best to fix this. If possible, InstCombine's
> canonicalization shouldn't hide arithmetic progressions behind bit masks.
> At least, it seems these transformations should be disabled unless (X >>
> C).hasOneUse(). They aren't exactly optimizations.