mirror of git://gcc.gnu.org/git/gcc.git
39 lines
823 B
C
39 lines
823 B
C
#include <assert.h>
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/* Test of reduction on both parallel and loop directives (worker and
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vector-partitioned loops individually in gang-partitioned mode, int
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type). */
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int
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main (int argc, char *argv[])
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{
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int i, j, arr[32768], res = 0, hres = 0;
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for (i = 0; i < 32768; i++)
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arr[i] = i;
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#pragma acc parallel num_gangs(32) num_workers(32) vector_length(32) \
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reduction(+:res) copy(res)
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{
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#pragma acc loop gang
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for (j = 0; j < 32; j++)
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{
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#pragma acc loop worker reduction(+:res)
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for (i = 0; i < 1024; i++)
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res += arr[j * 1024 + i];
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#pragma acc loop vector reduction(+:res)
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for (i = 1023; i >= 0; i--)
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res += arr[j * 1024 + i];
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}
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}
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for (j = 0; j < 32; j++)
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for (i = 0; i < 1024; i++)
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hres += arr[j * 1024 + i] * 2;
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assert (res == hres);
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return 0;
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}
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