[Bug target/104253] New: libgcc missing __floatdiif

["murphyp at linux dot vnet.ibm.com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104253

            Bug ID: 104253
           Summary: libgcc missing __floatdiif
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: murphyp at linux dot vnet.ibm.com
                CC: bergner at gcc dot gnu.org, meissner at gcc dot gnu.org
  Target Milestone: ---

When compiling something which uses the __ibm128 type, an instrinsic function
call is generated which is not satisfied at link time. E.g foo.c:

#include <stdio.h>
#include <stdlib.h>

int main(int a, char **v)
{
        long d = strtol(v[1],0,0);
        __ibm128 i = d;
        printf("%a
%a\n",__builtin_unpack_ibm128(i,0),__builtin_unpack_ibm128(i,1));
        return 0;
}

gcc -O2 foo.c -o foo:
/usr/bin/ld: /tmp/ccuWW1m0.o: in function `main':
foo.c:(.text.startup+0x2c): undefined reference to `__floatdiif'
collect2: error: ld returned 1 exit status

This happens on a ppc64le machine running fedora rawhide, gcc -v:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/ppc64le-redhat-linux/12/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: ppc64le-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,fortran,objc,obj-c++,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release
--enable-targets=powerpcle-linux --disable-multilib --with-system-zlib
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-gcc-major-version-only
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--with-isl=/builddir/build/BUILD/gcc-12.0.1-20220118/obj-ppc64le-redhat-linux/isl-install
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-offload-defaulted --enable-gnu-indirect-function --enable-secureplt
--with-long-double-128 --with-long-double-format=ieee --with-cpu-32=power8
--with-tune-32=power8 --with-cpu-64=power8 --with-tune-64=power8
--build=ppc64le-redhat-linux --with-build-config=bootstrap-lto
--enable-link-serialization=1
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220118 (Red Hat 12.0.1-0) (GCC)