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/* { dg-do compile } */
/* { dg-additional-options "-fno-tree-loop-vectorize" } */
int a[4], b[4], c[400], d[400];
void f1()
{
int a0 = a[0] - b[0];
int a1 = a[1] + b[1];
int a2 = a[2] - b[2];
int a3 = a[3] + b[3];
int b0 = a0;
int b1 = a1;
int b2 = a2;
int b3 = a3;
for (int i = 0; i < 100; ++i)
{
a0 += c[i * 4 + 1];
a1 += c[i * 4 + 0];
a2 += c[i * 4 + 3];
a3 += c[i * 4 + 2];
b0 ^= d[i * 4 + 3];
b1 ^= d[i * 4 + 2];
b2 ^= d[i * 4 + 1];
b3 ^= d[i * 4 + 0];
}
a[0] = a0 ^ b0;
a[1] = a1 ^ b1;
a[2] = a2 ^ b2;
a[3] = a3 ^ b3;
}
/* { dg-final { scan-tree-dump-times "add new stmt: \[^\\n\\r\]* = VEC_PERM_EXPR" 4 "slp1" { target { vect_int && vect_perm } } } } */
/* { dg-final { scan-tree-dump "duplicating permutation node" "slp1" { target { vect_int && vect_perm } } } } */
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