Displaying 4 results from an estimated 4 matches for "devectorized".
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devectorize
2013 Oct 25
2
[LLVMdev] Is there pass to break down <4 x float> to scalars
Hi,
Great to see someone working on this. This will benefit the performance
portability goal of the pocl's OpenCL kernel compiler. It has been one of
the low hanging fruits in improving its implicit WG vectorization
applicability.
The use case there is that sometimes it makes sense to devectorize
the explicitly used vector datatype code of OpenCL kernels in order to make
better opportunities
2013 Oct 25
0
[LLVMdev] Is there pass to break down <4 x float> to scalars
Pekka Jääskeläinen <pekka.jaaskelainen at tut.fi> writes:
> E.g., the last time I checked, the inner loop vectorizer (which pocl exploits)
> just refused to vectorize loops with vector instructions. It might not
> be so drastic with the SLP or the BB vectorizer, but in general, it might
> make sense to let the vectorizer to do the decisions on how to map the
> parallel
2013 Oct 25
0
[LLVMdev] Is there pass to break down <4 x float> to scalars
Renato Golin <renato.golin at linaro.org> writes:
> On 25 October 2013 11:06, Richard Sandiford <rsandifo at linux.vnet.ibm.com>wrote>> It would also need some TargetTransformInfo hooks to decide which
>> vectors should be decomposed.
>
> If I got it right, this may not be necessary, or it may even be harmful.
>
> Say you decide that <4 x i32> vectors
2013 Oct 25
3
[LLVMdev] Is there pass to break down <4 x float> to scalars
On 25 October 2013 11:06, Richard Sandiford <rsandifo at linux.vnet.ibm.com>wrote:
> I wanted the same thing for SystemZ, which doesn't have vectors,
> in order to improve the llvmpipe code.
>
Hi Richard,
This is a nice patch. I was wondering how hard it'd be to do that, and it
seems that you're catching lots of corner cases.
My interest is also due to converting odd