[Bug target/48840] New: [4.4/4.7 Regression] ICE, gcc_assert (old_frame_size == get_frame_size ()) maybe fp/vis-related

["hp at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48840

           Summary: [4.4/4.7 Regression] ICE, gcc_assert (old_frame_size
                    == get_frame_size ()) maybe fp/vis-related
           Product: gcc
           Version: 4.4.5
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org


Created attachment 24159
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24159
Preprocessed, trivially reduced test-case

For gcc-4.4.0 and gcc-4.4.5, observe the following ICE for the attachment,
running "cc1 -fpreprocessed ~/rcf3.i -mptr64 -mstack-bias -mlong-double-128
-mcpu=ultrasparc -m64 -mvis -O2 -funroll-loops -fPIC -o rc_filter.s":

/home/hp/rcf3.i: In function 'rc_filter_sobel_3x3_horz_u8':
/home/hp/rcf3.i:26: internal compiler error: in reload, at reload1.c:1170
where that line has a "gcc_assert (old_frame_size == get_frame_size ())".

Similarly for trunk revision 172690 (same line, different number)
though not for revision 170836 (now the 4.6 branch) and not for gcc-4.3.5.