Viewing file:  bb-slp-subgroups-3.c (1.22 KB) -rw-r--r--
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/* { dg-require-effective-target vect_int } */
/* { dg-require-effective-target vect_int_mult } */
/* PR tree-optimization/67682. */
#include "tree-vect.h"
int __attribute__((__aligned__(8))) a[8];
int __attribute__((__aligned__(8))) b[8];
__attribute__ ((noinline)) void
test ()
{
a[0] = b[0] + 1;
a[1] = b[1] + 2;
a[2] = b[2] + 3;
a[3] = b[3] + 4;
a[4] = b[0] * 3;
a[5] = b[2] * 4;
a[6] = b[4] * 5;
a[7] = b[6] * 7;
}
int
main (int argc, char **argv)
{
check_vect ();
for (int i = 0; i < 8; i++)
a[i] = 1;
for (int i = 0; i < 8; i++)
b[i] = i + 4;
__asm__ volatile ("" : : : "memory");
test (a, b);
__asm__ volatile ("" : : : "memory");
if ((a[0] != 5) || (a[1] != 7) || (a[2] != 9) || (a[3] != 11)
|| (a[4] != 12) || (a[5] != 24) || (a[6] != 40) || (a[7] != 70))
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "Basic block will be vectorized using SLP" 1 "slp2" } } */
/* Because we disable the cost model, targets with variable-length
vectors can end up vectorizing the store to a[0..7] on its own.
With the cost model we do something sensible. */
/* { dg-final { scan-tree-dump-times "optimized: basic block" 2 "slp2" { xfail vect_variable_length } } } */
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