gcc/testsuite/gcc.dg/ipa/pr45644.c

   1 /* Verify that we do not IPA-SRA bitfields.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2"  } */
   4
   5 extern void abort (void);
   6
   7 struct S
   8 {
   9   int j : 8;
  10   int i : 24;
  11   int l;
  12 };
  13
  14 static int __attribute__((noinline)) foo (struct S *s)
  15 {
  16   int z = s->i;
  17   if (z != 777)
  18     abort ();
  19   return 0;
  20 }
  21
  22 int __attribute__((noinline)) bar (struct S *s)
  23 {
  24   return foo (s);
  25 }
  26
  27 int main (int argc, char *argv[])
  28 {
  29   struct S s;
  30   s.j = 5;
  31   s.i = 777;
  32   s.l = -1;
  33
  34   return bar (&s);
  35 }