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/* { dg-require-effective-target vect_double } */
#include "tree-vect.h"
void __attribute__((noinline,noclone))
foo (double *a4, int n)
{
for (int i = 0; i < n; ++i)
{
/* We may not apply interleaving to the group (a), (b) because of (c).
Instead group (d) and (b). */
double tem1 = a4[i*4] + a4[i*4+n*4] /* (a) */;
double tem2 = a4[i*4+2*n*4+1];
a4[i*4+n*4+1] = tem1; /* (c) */
a4[i*4+1] = tem2;
double tem3 = a4[i*4] - tem2;
double tem4 = tem3 + a4[i*4+n*4] /* (d) */;
a4[i*4+n*4+1] = tem4 + a4[i*4+n*4+1] /* (b) */;
}
}
int main(int argc, char **argv)
{
int n = 11;
double a4[4 * n * 3];
double a42[4 * n * 3];
check_vect ();
for (int i = 0; i < 4 * n * 3; ++i)
{
a4[i] = a42[i] = i;
__asm__ volatile ("": : : "memory");
}
foo (a4, n);
for (int i = 0; i < n; ++i)
{
double tem1 = a42[i*4] + a42[i*4+n*4];
double tem2 = a42[i*4+2*n*4+1];
a42[i*4+n*4+1] = tem1;
a42[i*4+1] = tem2;
double tem3 = a42[i*4] - tem2;
double tem4 = tem3 + a42[i*4+n*4];
a42[i*4+n*4+1] = tem4 + a42[i*4+n*4+1];
__asm__ volatile ("": : : "memory");
}
#pragma GCC novector
for (int i = 0; i < 4 * n * 3; ++i)
if (a4[i] != a42[i])
__builtin_abort ();
return 0;
}
/* For v2df we try to use SLP and fail miserably. */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_sizes_32B_16B } } } */
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