[PATCH] Enhance urem to bitwise-and optimization

[David Majnemer]

On Wed, May 8, 2013 at 8:35 PM, Rafael Espíndola <rafael.espindola at gmail.com
> wrote:

> Is the select case really redundant now?

Yes, llvm::isKnownToBeAPowerOfTwo has support for select instructions. The
function 'test4' in rem.ll provides verification that we still handle
select instructions.


> Would you mind starting a FileCheck test file?
>
Should I start a FileCheck file or would it be better FileCheck-ize rem.ll?


>
> On 8 May 2013 18:22, David Majnemer <david.majnemer at gmail.com> wrote:
> > This patch replaces intelligence inside of InstCombiner::visitURem with a
> > call to isKnownToBeAPowerOfTwo.
> > By doing this, we can find more opportunities to transform urem
> instructions
> > to bitwise-and instructions.
> >
> > --
> > David Majnemer
> >
> > _______________________________________________
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> > llvm-commits at cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
> >
>
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