[Bug target/66509] the new clang-based assembler in Xcode 7 on 10.11 fails on the libjava/java/lang/reflect/natArray.cc file from FSF gcc 5.1 at -m32

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66509

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is due to HAVE_AS_IX86_FILDS not being defined.  So basically they made
the clang assembly not backwards compatible with the GNU one.

You can add a check to configure.ac if you want which does the same the check
for the gnu assembly:
    gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
       gcc_cv_as_ix86_filds,,,
       [filds mem; fists mem],,
       [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
         [Define if your assembler uses filds and fists mnemonics.])])

Actually on second thought, this should be happening.  Can you attach
config.log form gcc directory.