gnu/dist/gcc4/gcc/testsuite/gcc.dg/tree-ssa/pr19633.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-ssa-vops" } */
   3 struct S
   4 {
   5   int w, x, y, z;
   6 };
   7 struct T
   8 {
   9   int r;
  10   struct S s;
  11 };
  12 void bar (struct S, int);
  13 void
  14 foo (int a, struct T b)
  15 {
  16   struct S x;
  17   struct S *c = &x;
  18   if (a)
  19     c = &b.s;
  20   bar (*c, a);
  21 }
  22
  23 /* Make sure that .GLOBAL_VAR is not created when there are no
  24    clobbering calls.  */
  25 /* { dg-final { scan-tree-dump-times "GLOBAL_VAR" 0 "ssa"} } */
  26 /* { dg-final { cleanup-tree-dump "ssa" } } */