gcc/testsuite/gcc.dg/pr98255.c

   1 /* PR tree-optimization/98255 */
   2 /* { dg-do run } */
   3 /* { dg-options "-Os" } */
   4 /* { dg-additional-options "-fPIC" { target fpic } } */
   5
   6 struct A { volatile unsigned b; unsigned c; };
   7 int d, *e, h, k, l;
   8 static struct A f;
   9 long g;
  10 static unsigned i = -2U;
  11 volatile int j;
  12
  13 long
  14 foo (void)
  15 {
  16   char n[4][4][3]
  17     = { { {9, 2, 8}, {9, 2, 8}, {9, 2, 8}, {9} }, { {8} }, { {8} }, { {2} } };
  18   while (d)
  19     {
  20       for (; f.c < 4; f.c++)
  21         {
  22           *e = 0;
  23           h = n[f.c + 4][0][d];
  24         }
  25       while (g)
  26         return n[0][3][i];
  27       while (1)
  28         {
  29           if (k)
  30             {
  31               j = 0;
  32               if (j)
  33                 continue;
  34             }
  35           if (l)
  36             break;
  37         }
  38     }
  39   return 0;
  40 }
  41
  42 int
  43 main ()
  44 {
  45   asm volatile ("" : "+g" (d), "+g" (g), "+g" (f.c));
  46   asm volatile ("" : "+g" (e), "+g" (k), "+g" (l));
  47   foo ();
  48   return 0;
  49 }