gomp-20050608-branch/gcc/testsuite/gcc.misc-tests/i386-pf-none-1.c

   1 /* Test that data prefetch instructions are not generated for i386 variants
   2    that do not support those instructions.  */
   3
   4 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   5 /* { dg-require-effective-target ilp32 } */
   6
   7 extern void exit (int);
   8
   9 char *msg = "howdy there";
  10
  11 void foo (char *p)
  12 {
  13   __builtin_prefetch (p, 0, 0);
  14   __builtin_prefetch (p, 0, 1);
  15   __builtin_prefetch (p, 0, 2);
  16   __builtin_prefetch (p, 0, 3);
  17   __builtin_prefetch (p, 1, 0);
  18   __builtin_prefetch (p, 1, 1);
  19   __builtin_prefetch (p, 1, 2);
  20   __builtin_prefetch (p, 1, 3);
  21 }
  22
  23 int main ()
  24 {
  25   foo (msg);
  26   exit (0);
  27 }
  28
  29 /* { dg-final { scan-assembler-not "fetch" } } */