gcc/testsuite/gcc.dg/tree-ssa/sra-16.c

   1 /* Verify that SRA total scalarization works on records containing arrays.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-O1 -fdump-tree-release_ssa --param sra-max-scalarization-size-Ospeed=16" } */
   4
   5 extern void abort (void);
   6
   7 struct S
   8 {
   9   long zilch[0];
  10   char c;
  11   int i;
  12   unsigned short f3, f4;
  13 };
  14
  15
  16 int __attribute__ ((noinline))
  17 foo (struct S *p)
  18 {
  19   struct S l;
  20
  21   l = *p;
  22   l.i++;
  23   l.f3++;
  24   *p = l;
  25 }
  26
  27 int
  28 main (int argc, char **argv)
  29 {
  30   struct S a = { { }, 0, 4, 0, 0};
  31   foo (&a);
  32   if (a.i != 5 || a.f3 != 1)
  33     abort ();
  34   return 0;
  35 }
  36
  37 /* { dg-final { scan-tree-dump-times "l;" 0 "release_ssa" } } */