* doc/extend.texi: Mention __float128 support on hppa HP-UX.
* config/pa/pa-hpux.h (HPUX_LONG_DOUBLE_LIBRARY): Define to 1.
* config/pa/pa.c (pa_expand_builtin): New. Include "langhooks.h".
(pa_c_mode_for_suffix): New.
(TARGET_EXPAND_BUILTIN): Define.
(TARGET_C_MODE_FOR_SUFFIX): Define.
(pa_builtins): Define.
(pa_init_builtins): Register __float128 type and init new support
builtins.
* config/pa/pa.h (HPUX_LONG_DOUBLE_LIBRARY): Define if not defined.
* config/pa/quadlib.c (_U_Qfcopysign): New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168969 138bc75d-0d04-0410-961f-82ee72b054a4