PR 19696
        * optabs.c (expand_copysign_absneg): Export.
        * optabs.h (expand_copysign_absneg): Declare.
        * config/rs6000/rs6000.md (copysigntf3): New.

        * gcc.c-torture/execute/ieee/copysign1.c: Special case sizeof
        long double for ibm double-double format.
        * gcc.c-torture/execute/ieee/copysign2.c: Likewise.

From-SVN: r94559