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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/109067] Powerpc GCC does not support __ibm128 complex
 multiply/divide if long double is IEEE 128-bit.
Date: Mon, 20 Mar 2023 18:48:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109067

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Michael Meissner <meissner@gcc.gnu.or=
g>:

https://gcc.gnu.org/g:c67f312d20e15e5aa18c587693b4ab7e131596c1

commit r13-6763-gc67f312d20e15e5aa18c587693b4ab7e131596c1
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Mon Mar 20 14:48:06 2023 -0400

    Rework 128-bit complex multiply and divide.

    This patch reworks how the complex multiply and divide built-in functio=
ns
are
    done.  Previously GCC created built-in declarations for doing long doub=
le
complex
    multiply and divide when long double is IEEE 128-bit.  However, it did =
not
    support __ibm128 complex multiply and divide if long double is IEEE
128-bit.

    This code does not create the built-in declaration with the changed nam=
e.
    Instead, it uses the TARGET_MANGLE_DECL_ASSEMBLER_NAME hook to change t=
he
name
    before it is written out to the assembler file like it now does for all=
 of
the
    other long double built-in functions.

    2023-03-20   Michael Meissner  <meissner@linux.ibm.com>

    gcc/

            PR target/109067
            * config/rs6000/rs6000.cc (create_complex_muldiv): Delete.
            (init_float128_ieee): Delete code to switch complex multiply and
divide
            for long double.
            (complex_multiply_builtin_code): New helper function.
            (complex_divide_builtin_code): Likewise.
            (rs6000_mangle_decl_assembler_name): Add support for mangling t=
he
name
            of complex 128-bit multiply and divide built-in functions.

    gcc/testsuite/

            PR target/109067
            * gcc.target/powerpc/divic3-1.c: New test.
            * gcc.target/powerpc/divic3-2.c: Likewise.
            * gcc.target/powerpc/mulic3-1.c: Likewise.
            * gcc.target/powerpc/mulic3-2.c: Likewise.=