[llvm] r255334 - [InstCombine] Make MatchBSwap also match bit reversals

[James Molloy via llvm-commits]

http://reviews.llvm.org/D15857

On Mon, 4 Jan 2016 at 16:09 James Molloy <james at jamesmolloy.co.uk> wrote:

> Patience is a virtue old chap ;)
>
> I'm on it as we speak.
>
> On Mon, 4 Jan 2016 at 16:09 Joerg Sonnenberger via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
>> On Thu, Dec 24, 2015 at 10:58:59PM +0000, James Molloy via llvm-commits
>> wrote:
>> > Ah yes, looking at the IR output makes it clearer. There are ORs on each
>> > side of the expression all the way down.
>> >
>> > The algorithm has been in tree for years... We could surely modify this
>> > patch to make it look more like a byte swap and trigger it in years old
>> > versions of LLVM! :/
>> >
>> > I'll create a patch but it'll be after these few days of Christmas :)
>>
>> Holidays are over, any chance to look at it? :)
>>
>> Joerg
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>
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