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/* { dg-require-effective-target vect_int } */
/* { dg-require-effective-target vect_perm } */
#include "tree-vect.h"
void __attribute__((noipa))
foo (int * __restrict__ a, int * __restrict__ b, int * __restrict__ c, int n)
{
int t = *c;
for (int i = 0; i < n; ++i)
{
b[i] = a[i] - t;
t = a[i];
}
}
int a[64], b[64];
int
main ()
{
check_vect ();
for (int i = 0; i < 64; ++i)
{
a[i] = i;
__asm__ volatile ("" ::: "memory");
}
int c = 7;
foo (a, b, &c, 63);
#pragma GCC novector
for (int i = 1; i < 63; ++i)
if (b[i] != a[i] - a[i-1])
abort ();
if (b[0] != -7)
abort ();
return 0;
}
/* ??? We miss epilogue handling for first order recurrences. */
/* { dg-final { scan-tree-dump "vectorized 1 loops in function" "vect" { target vect_fully_masked } } } */
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