gcc/testsuite/gcc.dg/pr64536.c

   1 /* PR rtl-optimization/64536 */
   2 /* { dg-do link } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-additional-options "-fPIC" { target fpic } } */
   5 /* { dg-require-effective-target ptr32plus } */
   6
   7 struct S { long q; } *h;
   8 long a, b, g, j, k, *c, *d, *e, *f, *i;
   9 long *baz (void)
  10 {
  11   asm volatile ("" : : : "memory");
  12   return e;
  13 }
  14
  15 void
  16 bar (int x)
  17 {
  18   int y;
  19   for (y = 0; y < x; y++)
  20     {
  21       switch (b)
  22         {
  23         case 0:
  24         case 2:
  25           a++;
  26           break;
  27         case 3:
  28           a++;
  29           break;
  30         case 1:
  31           a++;
  32         }
  33       if (d)
  34         {
  35           f = baz ();
  36           g = k++;
  37           if (&h->q)
  38             {
  39               j = *f;
  40               h->q = *f;
  41             }
  42           else
  43             i = (long *) (h->q = *f);
  44           *c++ = (long) f;
  45           e += 6;
  46         }
  47       else
  48         {
  49           f = baz ();
  50           g = k++;
  51           if (&h->q)
  52             {
  53               j = *f;
  54               h->q = *f;
  55             }
  56           else
  57             i = (long *) (h->q = *f);
  58           *c++ = (long) f;
  59           e += 6;
  60         }
  61     }
  62 }
  63
  64 int
  65 main ()
  66 {
  67   return 0;
  68 }