Reduction Pattern ( Vectorization or Parallelization)

[Toon Moene]

On 07/16/2015 12:53 PM, Richard Biener wrote:

> On Sun, Jul 5, 2015 at 1:57 PM, Ajit Kumar Agarwal

>> For the following code
>> For(j = 0; j <= N;j++)
>> {
>>     y = d[j];
>>      For( I = 0 ; I  <8 ; i++)
>>          X(a[i]) = X(a[i]) + c[i] * y;
>> }
>>
>> Fig(1).

> I think the issue here is dependences of X(A[i]) as A[i] might be the same
> for different i.

In Fortran this is not allowed on the left-hand side of an assignment. 
Does C have any restrictions here ?

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Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
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