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/* { dg-do compile { target powerpc*-*-* i?86-*-* } } */
/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -maltivec" { target powerpc*-*-* } } */
/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -msse2" { target i?86-*-* } } */
#define N 16
void fbar (float *);
void ibar (int *);
void sbar (short *);
/* multiple loops */
foo (int n)
{
float a[N+1];
float b[N];
float c[N];
float d[N];
int ia[N];
int ib[N];
int ic[N];
short sa[N];
short sb[N];
short sc[N];
int i,j;
int diff = 0;
char cb[N];
char cc[N];
char image[N][N];
char block[N][N];
/* Not vetorizable yet (cross-iteration cycle). */
diff = 0;
for (i = 0; i < N; i++) {
diff += (cb[i] - cc[i]);
}
ibar (&diff);
/* Not vetorizable yet (outer-loop: not attempted.
inner-loop: cross iteration cycle; multi-dimensional arrays). */
diff = 0;
for (i = 0; i < N; i++) {
for (i = 0; i < N; i++) {
diff += (image[i][j] - block[i][j]);
}
}
ibar (&diff);
/* Vectorizable. */
for (i = 0; i < N; i++){
a[i] = b[i];
}
fbar (a);
/* Vectorizable. */
for (i = 0; i < N; i++){
a[i] = b[i] + c[i] + d[i];
}
fbar (a);
/* Not vetorizable yet (access pattern). */
for (i = 0; i < N/2; i++){
a[i] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i];
d[i] = b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i];
}
fbar (a);
/* Vectorizable. */
for (i = 0; i < N; i++){
a[i] = b[i] + c[i];
d[i] = b[i] + c[i];
ia[i] = ib[i] + ic[i];
}
ibar (ia);
fbar (a);
fbar (d);
/* Not vectorizable yet (two types with different nunits in vector). */
for (i = 0; i < N; i++){
ia[i] = ib[i] + ic[i];
sa[i] = sb[i] + sc[i];
}
ibar (ia);
sbar (sa);
/* Not vetorizable yet (too conservative dependence test). */
for (i = 0; i < N; i++){
a[i] = b[i] + c[i];
a[i+1] = b[i] + c[i];
}
fbar (a);
}
/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect"} } */
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