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Subject: [Bug target/116007] libquadmath fails to build with
 libgcc/soft-fp/quad.h:69:1: error: unable to emulate 'TF'
Date: Sat, 03 Aug 2024 18:43:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D116007

--- Comment #19 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:3ac02e67503ccffa3dfeeffc0a60fce6bdaca43b

commit r15-2708-g3ac02e67503ccffa3dfeeffc0a60fce6bdaca43b
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Aug 3 20:37:54 2024 +0200

    libquadmath: Fix up libquadmath/math/sqrtq.c compilation in some powerp=
c*
configurations [PR116007]

    My PR114623 change started using soft-fp.h and quad.h for the sqrtq
implementation.
    Unfortunately, that seems to fail building in some powerpc* configurati=
ons,
where
    TFmode isn't available.
    quad.h has:
     #ifndef TFtype
     typedef float TFtype __attribute__ ((mode (TF)));
     #endif
    and uses TFtype.  quad.h has:
     /* Define the complex type corresponding to __float128
        ("_Complex __float128" is not allowed) */
     #if (!defined(_ARCH_PPC)) || defined(__LONG_DOUBLE_IEEE128__)
     typedef _Complex float __attribute__((mode(TC))) __complex128;
     #else
     typedef _Complex float __attribute__((mode(KC))) __complex128;
     #endif
    with the conditional and KCmode use added during porting of libquadmath
    to powerpc*, so I've just defined TFtype for powerpc when
__LONG_DOUBLE_IEEE128__
    isn't defined; I could define it to float __attribute__ ((mode (KF))) b=
ut
it
    seemed easier to just define it to __float128 which should do the same
thing.

    2024-08-03  Jakub Jelinek  <jakub@redhat.com>

            PR target/116007
            * math/sqrtq.c (TFtype): For PowerPC without
__LONG_DOUBLE_IEEE128__
            define to __float128 before including soft-fp.h and quad.h.=