[LLVMdev] Predication on SIMD architectures and LLVM

[Marcello Maggioni]

On 10/19/2012 5:12 PM, 陳韋任 (Wei-Ren Chen) wrote:
> Hi Marcello,
>
> On Fri, Oct 19, 2012 at 04:38:29PM +0100, Marcello Maggioni wrote:
>> Hello,
>> I'm working on a compiler based on LLVM for a SIMD architecture that
>> supports instruction predication. We would like to implement branching
>> on this architecture using predication.
>> As you know the LLVM-IR doesn't support instruction predication, so I'm
>> not exactly sure on what is the best way to implement it.
>> We came up with some ways to do it in LLVM:
>    I recall Ocelot [1], a binary translator which translates PTX into LLVM
> also faces the same problem. You might want to take a look on what
> Ocelot does.
>
> HTH,
> chenwj
>
> [1] http://www.gdiamos.net/papers/ocelot-pact.pdf
>
Hi Wen-Ren,

thank you for your link, seems like an interesting read on the argument!

Marcello

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Marcello Maggioni
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