[Bug c/16876] New: ICE on testcase with -O3 in gen_lowpart

["marcus at jet dot franken dot de" <gcc-bugzilla at gcc dot gnu dot org>]

On AMD64, PPC, PPC64, i386: 
 
gcc -O3 -c parse_opts.i 
parse_opts.i: In function `f': 
parse_opts.i:11: internal compiler error: in gen_lowpart, at emit-rtl.c:1436 
 
The code is invalid (a bit), but it should not crash. 
 
reproduced with mainline from some days ago, 3.3-hammer branch, 3.4 branch 
too.

-- 
           Summary: ICE on testcase with -O3 in gen_lowpart
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marcus at jet dot franken dot de
                CC: gcc-bugs at gcc dot gnu dot org,matz at suse dot de
 GCC build triplet: all
  GCC host triplet: all
GCC target triplet: all


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16876