gcc/testsuite/gcc.dg/tree-ssa/loop-28.c

   1 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   2 /* { dg-require-effective-target ilp32 } */
   3 /* { dg-options "-O2 -fprefetch-loop-arrays -march=athlon -fdump-tree-final_cleanup -fdump-tree-aprefetch --param max-unrolled-insns=1000" } */
   4
   5 char x[100000];
   6
   7 void foo(int n)
   8 {
   9   int i;
  10
  11   for (i = 0; i < n; i++)
  12     x[i] = (char) i;
  13 }
  14
  15 /* There should be 64 MEMs in the unrolled loop and one more in the copy of the loop
  16    for the rest of the iterations.  */
  17
  18 /* { dg-final { scan-tree-dump-times "MEM" 65 "final_cleanup" } } */
  19
  20 /* There should be no i_a = i_b assignments.  */
  21 /* { dg-final { scan-tree-dump-times "i_.*= i_\[0-9\]*;" 0 "aprefetch" } } */
  22
  23 /* { dg-final { cleanup-tree-dump "final_cleanup" } } */
  24 /* { dg-final { cleanup-tree-dump "aprefetch" } } */