Hi,
I can reproduce it on 1.9.2 and i'm looking at it. I have created an issue
on github for the same : https://github.com/ispc/ispc/issues/1381 .
Thanks,
Deepak
On Wednesday, December 5, 2018 at 6:12:28 AM UTC-8, Jean Ben wrote:
>
>
> HI group,
>
> I've encountered a problem compiling for the avx512skx target using the
> reduce_add function.
> The following sample never ends compiling using ispc 1.9.2 on Linux:
>
> export uniform int select_eq (
> const uniform int count,
> const uniform int * const uniform values,
> const uniform int operand,
> uniform float * const uniform mask
> )
> {
> uniform int n = 0;
> foreach (i = 0 ... count)
> {
> int m = (int)(values[i] == operand);
> n += reduce_add (m); // (*)
> mask[i] = m; // (**)
> }
> return n;
> }
>
> The command line used is:
>
> ispc reduce_add.ispc -o reduce_add.o --target=avx512skx-i32x16 -O3
>
> Note that in -O0, the sample compiles fine. Anything equal or above -O1
> keeps the compiler hanged.
> Other targets like sse2, avx1 and avx2 are fine.
> Additionally, if you either comment the reduce_add line (*) or the
> following line (**) the sample compiles fine.
>
> I've worked it around specifically for avx512 by splitting the foreach
> loop in 2, but this is a bit nasty.
>
> Thank you in advance for your insights!
>
> Best regards,
> Ben
>
>
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