gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.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 bar1 (char *, int);
   7 void foo1 (int size)
   8 {
   9   char temp[size];
  10   temp[size-1] = '\0';
  11   bar1 (temp, size);
  12 }
  13
  14 void bar2 (char *, char *, char *, char *, int);
  15 void foo2 (int size)
  16 {
  17   char temp[size];
  18   temp[size-1] = '\0';
  19   {
  20     char temp2[size];
  21     {
  22       char temp3[size];
  23       {
  24         char temp4[size];
  25         bar2 (temp, temp2, temp3, temp4, size);
  26       }
  27     }
  28   }
  29 }
  30
  31 /* { dg-final { scan-tree-dump-not "__builtin_stack_save" "optimized"} } */
  32 /* { dg-final { scan-tree-dump-not "__builtin_stack_restore" "optimized"} } */