gcc/testsuite/gcc.dg/pr80903.c

   1 /* PR rtl-optimization/80903 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O3 -funroll-loops" } */
   4
   5 short int a;
   6
   7 void
   8 foo (int x, short int y, short int z)
   9 {
  10   if (y != 0)
  11     {
  12       const short int b = 37;
  13       y = 0;
  14       while (y < b)
  15         {
  16           while (y < b)
  17             {
  18             lab:
  19               ++y;
  20             }
  21           for (y = 0; y < b - 1; ++y)
  22             ;
  23           if (z != 0)
  24             {
  25               --a;
  26               y *= a;
  27             }
  28           z = x;
  29         }
  30       x = 0;
  31     }
  32
  33   goto lab;
  34 }