Subversion Repositories openrisc_2011-10-31

/* { dg-do run } */

/* { dg-options "-O2" } */

/* { dg-require-effective-target int32plus } */

struct tree_decl

{

  union tree_decl_u1 {

    int f;

    long i;

    struct tree_decl_u1_a {

      unsigned int align : 24;

      unsigned int off_align : 8;

    } a;

  } u1;

};

extern void abort (void);

unsigned int

assemble_variable (struct tree_decl decl)

{

  unsigned int align;

  align = decl.u1.a.align;

  if (align > (1 << ((8 * 4) < 64 ? (8 * 4) - 2 : 62)))

    align = (1 << ((8 * 4) < 64 ? (8 * 4) - 2 : 62));

  /* VRP should not be propagating 0 to the RHS of this assignment.

     But it was erroneously applying a cast operation between types of

     different precision.  align is an unsigned int with range [0,

     0x4000000] but the .align field holds only 24 bits.  So the cast

     was returning a [0, 0] range.  */

  decl.u1.a.align = align;

  return decl.u1.a.align;

}

main ()

{

  struct tree_decl decl;

  decl.u1.a.align = 13;

  unsigned int x = assemble_variable (decl);

  if (x == 0)

    abort ();

  return 0;

}