gcc/testsuite/gcc.dg/unroll-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-cunrolli-details=stderr -fno-peel-loops -fno-tree-vrp  -fdisable-tree-cunroll -fenable-tree-cunrolli" } */
   3
   4 /* Blank lines can occur in the output of
   5    -fdump-tree-cunrolli-details=stderr.  */
   6 /* { dg-allow-blank-lines-in-output 1 } */
   7
   8 unsigned a[100], b[100];
   9 inline void bar()
  10 {
  11  a[10] = b[10];
  12 }
  13
  14 int foo(void)
  15 {
  16   int i;
  17   bar();
  18   for (i = 0; i < 2; i++) /* { dg-message "note: loop with 2 iterations completely unrolled" } */
  19   {
  20      a[i]= b[i] + 1;
  21   }
  22   return 1;
  23 }
  24
  25 int foo2(void)
  26 {
  27   int i;
  28   for (i = 0; i < 2; i++) /* { dg-message "note: loop with 2 iterations completely unrolled" } */
  29   {
  30      a[i]= b[i] + 1;
  31   }
  32   return 1;
  33 }
  34 /* { dg-prune-output ".*" } */