Retro68/gcc/libgomp/testsuite/libgomp.oacc-c-c++-common/reduction-5.c
Wolfgang Thaller 6fbf4226da gcc-9.1
2019-06-20 20:10:10 +02:00

55 lines
1.1 KiB
C

/* { dg-do run } */
/* { dg-additional-options "-w" } */
/* 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)
#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);
check_reduction (vector_length (vl), vector);
check_reduction (num_gangs (ng) num_workers (nw) vector_length (vl), gang
worker vector);
return 0;
}