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/* { dg-do run } */
/* Integer reductions. */
#include <stdlib.h>
#include <stdbool.h>
#define vl 32
#define DO_PRAGMA(x) _Pragma (#x)
#define check_reduction_op(type, op, init, b) \
{ \
type res, vres; \
res = (init); \
DO_PRAGMA (acc parallel vector_length (vl))\
DO_PRAGMA (acc loop reduction (op:res))\
for (i = 0; i < n; i++) \
res = res op (b); \
\
vres = (init); \
for (i = 0; i < n; i++) \
vres = vres op (b); \
\
if (res != vres) \
abort (); \
}
static void
test_reductions_int (void)
{
const int n = 1000;
int i;
int array[n];
for (i = 0; i < n; i++)
array[i] = i;
check_reduction_op (int, +, 0, array[i]);
check_reduction_op (int, *, 1, array[i]);
check_reduction_op (int, &, -1, array[i]);
check_reduction_op (int, |, 0, array[i]);
check_reduction_op (int, ^, 0, array[i]);
}
static void
test_reductions_bool (void)
{
const int n = 1000;
int i;
int array[n];
int cmp_val;
for (i = 0; i < n; i++)
array[i] = i;
cmp_val = 5;
check_reduction_op (bool, &&, true, (cmp_val > array[i]));
check_reduction_op (bool, ||, false, (cmp_val > array[i]));
}
#define check_reduction_macro(type, op, init, b) \
{ \
type res, vres; \
res = (init); \
DO_PRAGMA (acc parallel vector_length (vl))\
DO_PRAGMA (acc loop reduction (op:res))\
for (i = 0; i < n; i++) \
res = op (res, (b)); \
\
vres = (init); \
for (i = 0; i < n; i++) \
vres = op (vres, (b)); \
\
if (res != vres) \
abort (); \
}
#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) < (b)) ? (a) : (b))
static void
test_reductions_minmax (void)
{
const int n = 1000;
int i;
int array[n];
for (i = 0; i < n; i++)
array[i] = i;
check_reduction_macro (int, min, n + 1, array[i]);
check_reduction_macro (int, max, -1, array[i]);
}
int
main (void)
{
test_reductions_int ();
test_reductions_bool ();
test_reductions_minmax ();
return 0;
}
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