re PR other/19696 (gcc.c-torture/execute/ieee/copysign1.c: Unsatisfied symbols: copys...

re PR other/19696 (gcc.c-torture/execute/ieee/copysign1.c: Unsatisfied symbols: copysignl)

        PR 19696
        * optabs.c (expand_absneg_bit): Split out from expand_unop and
        expand_abs_nojump and generalize.  Use operand_subword and
        emit_no_conflict_block.  Support large modes.
        (expand_abs_nojump): Use it.  Use HONOR_SIGNED_ZEROS to fall
        back to maximum.
        (expand_unop): Likewise.  Use HONOR_SIGNED_ZEROS to fall back
        negation to subtraction.
        (expand_copysign): Check that the format has signed zeros.
        Use operand_subword and emit_no_conflict_block.  Support large modes.

From-SVN: r94465