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" } */
5 /* { dg-require-effective-target sse2 } */
6 /* { dg-final { scan-assembler "prefetcht0" } } */
7 /* { dg-final { scan-assembler "addps" } } */
8 /* { dg-final { scan-assembler "subss" } } */
11 float a[SIZE] __attribute__((__aligned__(32)));
12 float b[SIZE] __attribute__((__aligned__(32)));
13 float c[SIZE] __attribute__((__aligned__(32)));
15 /* This should vectorize. */
16 #pragma GCC push_options
17 #pragma GCC optimize (3, "unroll-all-loops", "-fprefetch-loop-arrays")
24 for (i = 0; i < SIZE; i++)
28 #pragma GCC pop_options
30 /* This should not vectorize. */
36 for (i = 0; i < SIZE; i++)