diff options
| -rw-r--r-- | gcc/value-range.cc | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/value-range.cc b/gcc/value-range.cc index 852ac09..d55d858 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -797,14 +797,17 @@ frange::zero_p () const && real_iszero (&m_max)); } +// Set the range to non-negative numbers, that is [+0.0, +INF]. +// +// The NAN in the resulting range (if HONOR_NANS) has a varying sign +// as there are no guarantees in IEEE 754 wrt to the sign of a NAN, +// except for copy, abs, and copysign. It is the responsibility of +// the caller to set the NAN's sign if desired. + void frange::set_nonnegative (tree type) { set (type, dconst0, frange_val_max (type)); - - // Set +NAN as the only possibility. - if (HONOR_NANS (type)) - update_nan (/*sign=*/false); } // Here we copy between any two irange's. The ranges can be legacy or @@ -3923,7 +3926,6 @@ range_tests_signed_zeros () ASSERT_TRUE (r0.undefined_p ()); r0.set_nonnegative (float_type_node); - ASSERT_TRUE (r0.signbit_p (signbit) && !signbit); if (HONOR_NANS (float_type_node)) ASSERT_TRUE (r0.maybe_isnan ()); } |