Viewing file:  slp-reduc-1.c (1.17 KB) -rw-r--r--
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/* { dg-require-effective-target vect_int } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 16
unsigned int ub[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
unsigned int uc[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
/* Vectorization of reduction using loop-aware SLP. */
__attribute__ ((noinline))
int main1 (int n, int res0, int res1, int res2, int res3)
{
int i;
unsigned int udiff0 = 5, udiff1 = 10, udiff2 = 20, udiff3 = 30;
for (i = 0; i < n; i++) {
udiff3 += (ub[4*i + 3] - uc[4*i + 3]);
udiff2 += (ub[4*i + 2] - uc[4*i + 2]);
udiff1 += (ub[4*i + 1] - uc[4*i + 1]);
udiff0 += (ub[4*i] - uc[4*i]);
}
/* Check results: */
if (udiff0 != res0
|| udiff1 != res1
|| udiff2 != res2
|| udiff3 != res3)
abort ();
return 0;
}
int main (void)
{
check_vect ();
main1 (N/4, 53, 66, 84, 102);
main1 (N/4 - 1, 29, 40, 56, 72);
return 0;
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail vect_no_int_add } } } */
/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { xfail vect_no_int_add } } } */
/* { dg-final { scan-tree-dump-times "VEC_PERM_EXPR" 0 "vect" } } */
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