Viewing file:  pr65947-12.c (1.04 KB) -rw-r--r--
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/* { dg-require-effective-target vect_condition } */
#include "tree-vect.h"
extern void abort (void) __attribute__ ((noreturn));
#define N 32
/* Simple condition reduction where the result is a negative of the induction.
Will fail to vectorize to a simple case. */
signed int
condition_reduction (signed int *a, signed int min_v)
{
signed int last = -1;
for (signed int i = 0; i < N; i++)
if (a[i] < min_v)
last = -i;
return last;
}
int
main (void)
{
signed int a[N] = {
11, -12, 13, 14, 15, 16, 17, 18, 19, 20,
1, 2, -3, 4, 5, 6, 7, -8, 9, 10,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
31, 32
};
check_vect ();
signed int ret = condition_reduction (a, 16);
if (ret != -19)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 2 "vect" } } */
/* { dg-final { scan-tree-dump-times "optimizing condition reduction with FOLD_EXTRACT_LAST" 2 "vect" { target vect_fold_extract_last } } } */
/* { dg-final { scan-tree-dump-not "condition expression based on integer induction." "vect" } } */
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