gcc/testsuite/gcc.dg/tree-prof/val-prof-2.c

   1 /* { dg-options "-O2 -fdump-tree-optimized -fdump-tree-tree_profile" } */
   2 unsigned int a[1000];
   3 unsigned int b = 256;
   4 unsigned int c = 1024;
   5 unsigned int d = 17;
   6 main ()
   7 {
   8   int i;
   9   unsigned int n;
  10   for (i = 0; i < 1000; i++)
  11     {
  12             a[i]=100*i;
  13     }
  14   for (i = 0; i < 1000; i++)
  15     {
  16       if (i % 2)
  17         n = b;
  18       else if (i % 3)
  19         n = c;
  20       else
  21         n = d;
  22       a[i] %= n;
  23     }
  24   return 0;
  25 }
  26 /* { dg-final-use { scan-tree-dump "Mod power of 2 transformation on insn" "tree_profile"} } */
  27 /* This is part of code checking that n is power of 2, so we are sure that the transformation
  28    didn't get optimized out.  */
  29 /* { dg-final-use { scan-tree-dump "n \\+ 0xffff" "optimized"} } */
  30 /* { dg-final-use { scan-tree-dump-not "Invalid sum" "optimized"} } */
  31 /* { dg-final-use { cleanup-tree-dump "optimized" } } */
  32 /* { dg-final-use { cleanup-tree-dump "tree_profile" } } */