1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
/* Test that the correct data prefetch instructions are generated for i386
variants that use 3DNow! prefetchw or SSE prefetch instructions with
locality hints. */
/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
/* { dg-require-effective-target ilp32 } */
extern void exit (int);
char *msg = "howdy there";
void foo (char *p)
{
__builtin_prefetch (p, 0, 0);
__builtin_prefetch (p, 0, 1);
__builtin_prefetch (p, 0, 2);
__builtin_prefetch (p, 0, 3);
__builtin_prefetch (p, 1, 0);
__builtin_prefetch (p, 1, 1);
__builtin_prefetch (p, 1, 2);
__builtin_prefetch (p, 1, 3);
}
int main ()
{
foo (msg);
exit (0);
}
/* { dg-final { scan-assembler "prefetchw" } } */
/* { dg-final { scan-assembler "prefetchnta" } } */
/* { dg-final { scan-assembler "prefetcht" } } */
|