https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65935
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase that also fails with -m64.
/* { dg-do run } */
/* { dg-additional-options "-O3" } */
/* { dg-require-effective-target vect_double } */
#include "tree-vect.h"
extern void abort (void);
extern void *malloc (__SIZE_TYPE__);
struct site {
struct {
struct {
double real;
double imag;
} e[3][3];
} link[32];
double phase[32];
} *lattice;
int sites_on_node;
void rephase (void)
{
int i,j,k,dir;
struct site *s;
for(i=0,s=lattice;i<sites_on_node;i++,s++)
for(dir=0;dir<32;dir++)
for(j=0;j<3;j++)for(k=0;k<3;k++)
{
s->link[dir].e[j][k].real *= s->phase[dir];
s->link[dir].e[j][k].imag *= s->phase[dir];
}
}
int main()
{
int i,j,k;
check_vect ();
sites_on_node = 1;
lattice = malloc (sizeof (struct site) * sites_on_node);
for (i = 0; i < 32; ++i)
{
lattice->phase[i] = i;
for (j = 0; j < 3; ++j)
for (k = 0; k < 3; ++k)
{
lattice->link[i].e[j][k].real = 1.0;
lattice->link[i].e[j][k].imag = 1.0;
__asm__ volatile ("" : : : "memory");
}
}
rephase ();
for (i = 0; i < 32; ++i)
for (j = 0; j < 3; ++j)
for (k = 0; k < 3; ++k)
if (lattice->link[i].e[j][k].real != i
|| lattice->link[i].e[j][k].imag != i)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "slp1" } } */
/* { dg-final { cleanup-tree-dump "slp1" } } */
/* { dg-final { cleanup-tree-dump "vect" } } */
