1/* Test the attribute((optimize)) really works.  Do this test by checking
2   whether we vectorize a simple loop.  */
3/* { dg-do compile } */
4/* { dg-options "-O1 -msse2 -mfpmath=sse -march=k8 --param min-insn-to-prefetch-ratio=0" } */
5/* { dg-final { scan-assembler "prefetcht0" } } */
6/* { dg-final { scan-assembler "addps" } } */
7/* { dg-final { scan-assembler "subss" } } */
8
9#define SIZE 10240
10float a[SIZE] __attribute__((__aligned__(32)));
11float b[SIZE] __attribute__((__aligned__(32)));
12float c[SIZE] __attribute__((__aligned__(32)));
13
14/* This should vectorize.  */
15void opt3 (void) __attribute__((__optimize__(3,"unroll-all-loops,-fprefetch-loop-arrays")));
16
17void
18opt3 (void)
19{
20  int i;
21
22  for (i = 0; i < SIZE; i++)
23    a[i] = b[i] + c[i];
24}
25
26/* This should not vectorize.  */
27void
28not_opt3 (void)
29{
30  int i;
31
32  for (i = 0; i < SIZE; i++)
33    a[i] = b[i] - c[i];
34}
35
36