[Bug target/60735] New: GCC targeting E500 with SPE has errors with the _Decimal64 type

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60735

            Bug ID: 60735
           Summary: GCC targeting E500 with SPE has errors with the
                    _Decimal64 type
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: meissner at gcc dot gnu.org

Created attachment 32519
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32519&action=edit
Example program, fails with -O3 on a powerpc-linuxspe target.

In my October 17th, 2013 changes to clean up the powerpc addressing issues, I
broke the use of DDmode (_Decimal64) on SPE systems.  This shows up in building
libgcc.  The issue is none of the moves of DDmode worked in the case where the
system had SPE double floating point, which puts double precision values in
GPRs.  However, the DDmode is not handled in the same fashion, and it fell
through the cracks.