[Bug bootstrap/53331] New: [4.8 Regression] AIX bootstrap failure in tree-vect-data-ref compiling matmul_i4

[dje at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53331

             Bug #: 53331
           Summary: [4.8 Regression] AIX bootstrap failure in
                    tree-vect-data-ref compiling matmul_i4
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d...@gcc.gnu.org


The recent patch to tree-vect-data-ref.c produces an ICE when compiling
matmul_i4 in libgfortran on PowerPC:

/farm/dje/src/src/libgfortran/generated/matmul_i4.c: In function 'matmul_i4':
/farm/dje/src/src/libgfortran/generated/matmul_i4.c:79:1: internal compiler
error: in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1963
 matmul_i4 (gfc_array_i4 * const restrict retarray,