It looks like we missed out on bitmasks for unary operators because we were using bit_value_binop exclusively. This patch hands off to bit_value_unop when appropriate, thus allowing us to handle ABS and BIT_NOT_EXPR, and others. Follow-up patches will add the tweaks for the range-ops entries themselves.
gcc/ChangeLog: * range-op.cc (update_known_bitmask): Handle unary operators. --- gcc/range-op.cc | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) diff --git a/gcc/range-op.cc b/gcc/range-op.cc index 6b5d4f2accd..d959a3e93dc 100644 --- a/gcc/range-op.cc +++ b/gcc/range-op.cc @@ -385,15 +385,29 @@ update_known_bitmask (irange &r, tree_code code, irange_bitmask lh_bits = lh.get_bitmask (); irange_bitmask rh_bits = rh.get_bitmask (); - bit_value_binop (code, sign, prec, &widest_value, &widest_mask, - TYPE_SIGN (lh.type ()), - TYPE_PRECISION (lh.type ()), - widest_int::from (lh_bits.value (), sign), - widest_int::from (lh_bits.mask (), sign), - TYPE_SIGN (rh.type ()), - TYPE_PRECISION (rh.type ()), - widest_int::from (rh_bits.value (), sign), - widest_int::from (rh_bits.mask (), sign)); + switch (get_gimple_rhs_class (code)) + { + case GIMPLE_UNARY_RHS: + bit_value_unop (code, sign, prec, &widest_value, &widest_mask, + TYPE_SIGN (lh.type ()), + TYPE_PRECISION (lh.type ()), + widest_int::from (lh_bits.value (), sign), + widest_int::from (lh_bits.mask (), sign)); + break; + case GIMPLE_BINARY_RHS: + bit_value_binop (code, sign, prec, &widest_value, &widest_mask, + TYPE_SIGN (lh.type ()), + TYPE_PRECISION (lh.type ()), + widest_int::from (lh_bits.value (), sign), + widest_int::from (lh_bits.mask (), sign), + TYPE_SIGN (rh.type ()), + TYPE_PRECISION (rh.type ()), + widest_int::from (rh_bits.value (), sign), + widest_int::from (rh_bits.mask (), sign)); + break; + default: + gcc_unreachable (); + } wide_int mask = wide_int::from (widest_mask, prec, sign); wide_int value = wide_int::from (widest_value, prec, sign); -- 2.41.0