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/* { dg-additional-options "-Wopenacc-parallelism" } for testing/documenting
aspects of that functionality. */
/* Multiple reductions. */
#include <stdio.h>
#include <stdlib.h>
#define ng 8
#define nw 4
#define vl 32
const int n = 100;
#define DO_PRAGMA(x) _Pragma (#x) /* { dg-line pragma_loc } */
#define check_reduction(gwv_par, gwv_loop) \
{ \
s1 = 2; s2 = 5; \
DO_PRAGMA (acc parallel gwv_par copy (s1, s2)) \
DO_PRAGMA (acc loop gwv_loop reduction (+:s1, s2)) \
for (i = 0; i < n; i++) \
{ \
s1 = s1 + 3; \
s2 = s2 + 5; \
} \
\
if (s1 != v1 && s2 != v2) \
abort (); \
}
int
main (void)
{
int s1 = 2, s2 = 5, v1 = 2, v2 = 5;
int i;
for (i = 0; i < n; i++)
{
v1 = v1 + 3;
v2 = v2 + 2;
}
check_reduction (num_gangs (ng), gang);
/* Nvptx targets require a vector_length or 32 in to allow spinlocks with
gangs. */
check_reduction (num_workers (nw) vector_length (vl), worker);
/* { dg-warning "region is vector partitioned but does not contain vector partitioned code" "test1" { target *-*-* } pragma_loc } */
check_reduction (vector_length (vl), vector);
check_reduction (num_gangs (ng) num_workers (nw) vector_length (vl), gang
worker vector);
return 0;
}
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