gcc/testsuite/gcc.dg/tree-ssa/pr23848-4.c

   1 /* PR middle-end/23848 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4 /* { dg-require-effective-target alloca } */
   5
   6 void bar (char *, char *, char *, char *, int);
   7 void foo (int size)
   8 {
   9   char temp[size];
  10   temp[size-1] = '\0';
  11   {
  12     char temp2[size];
  13     {
  14       char temp3[size];
  15       {
  16         char temp4[size];
  17         bar (temp, temp2, temp3, temp4, size);
  18       }
  19     }
  20     __asm __volatile ("" : : "r" (&temp[0]), "r" (&temp2[0]) : "memory");
  21   }
  22 }
  23
  24 /* { dg-final { scan-tree-dump-times "__builtin_stack_save" 1 "optimized"} } */
  25 /* { dg-final { scan-tree-dump-times "__builtin_stack_restore" 1 "optimized"} } */