[Bug target/85657] Make __ibm128 a separate type, even if long double uses the IBM double-double format

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85657

--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Wed Jun  6 22:54:17 2018
New Revision: 261253

URL: https://gcc.gnu.org/viewcvs?rev=261253&root=gcc&view=rev
Log:
[gcc]
2018-06-06  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85657
        * config/rs6000/rs6000-builtin.def (BU_IBM128_2): New helper
        macro for __ibm128 built-in functions.
        (PACK_IF): Add __ibm128 pack/unpack functions.
        (UNPACK_IF): Likewise.
        * config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Do not
        enable long double built-in functions if long double is IEEE
        128-bit floating point.
        (rs6000_invalid_builtin): Update long double built-in function
        error message.
        (rs6000_expand_builtin): For PACK_IF and UNPACK_IF built-in
        functions, adjust the built-in function to use the long double
        built-in function if __ibm128 and long double are the same type.
        * doc/extend.texi (PowerPC builtins): Update documention for
        __builtin_{,un}pack_longdouble.  Add documentation for
        __builtin_{,un}pack_ibm128.

[gcc/testsuite]
2018-06-06  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85657
        * gcc.target/powerpc/pr85657-4.c: New tests.
        * gcc.target/powerpc/pr85657-5.c: Likewise.
        * gcc.target/powerpc/pr85657-6.c: Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000-builtin.def
    trunk/gcc/config/rs6000/rs6000.c
    trunk/gcc/doc/extend.texi
    trunk/gcc/testsuite/ChangeLog