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