diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/value-range.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/value-range.cc b/gcc/value-range.cc index 03b3c4b..3743ec7 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -3017,6 +3017,10 @@ irange::intersect_nonzero_bits (const irange &r) if (mask_to_wi (m_nonzero_mask, t) != mask_to_wi (r.m_nonzero_mask, t)) { wide_int nz = get_nonzero_bits () & r.get_nonzero_bits (); + // If the nonzero bits did not change, return false. + if (nz == get_nonzero_bits ()) + return false; + m_nonzero_mask = wide_int_to_tree (t, nz); if (set_range_from_nonzero_bits ()) return true; |