[Bug tree-optimization/31169] Bootstrap comparison error at revision 122821

[rguenth at gcc dot gnu dot org]

------- Comment #38 from rguenth at gcc dot gnu dot org  2007-03-30 10:15 -------
Ok, got it now - the crucial point is where width comes from:

#define HOST_WIDE_INT long
#define HOST_BITS_PER_WIDE_INT (4*8)

struct tree_type
{
  unsigned int precision : 9;
};

int
sign_bit_p (struct tree_type *t, HOST_WIDE_INT val_hi, unsigned HOST_WIDE_INT
val_lo)
{
  unsigned HOST_WIDE_INT mask_lo, lo;
  HOST_WIDE_INT mask_hi, hi;
  int width = t->precision;


(... continuing as the last testcase)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31169