[Bug target/28717] New: [4.2 regression] ICE in extract_insn, at recog.c:2077 on s390

[tbm at cyrius dot com]

I get the followince ICE on s390.  I don't know if this is related to the other
extract_insn, at recog.c:2077 ICEs that have recently been reported.

sh-3.1# g++ -O2 -funroll-loops -c -x c -fPIC libjsw-disk.cc
libjsw-disk.cc: In function 'PrefixPaths':
libjsw-disk.cc:12: error: unrecognizable insn:
(insn 398 397 400 24 (set (reg/f:SI 67)
        (plus:SI (reg:SI 12 %r12)
            (const:SI (plus:SI (unspec:SI [
                            (symbol_ref:SI ("rtn_path.1515") [flags 0x2]
<var_decl 0x77dae310 rtn_path>)
                        ] 112)
                    (const_int 4096 [0x1000]))))) -1 (nil)
    (nil))
libjsw-disk.cc:12: internal compiler error: in extract_insn, at recog.c:2077
Please submit a full bug report,
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sh-3.1# g++ -O1 -funroll-loops -c -x c -fPIC libjsw-disk.cc
sh-3.1# cat libjsw-disk.cc
PrefixPaths (const char *parent, const char *child)
{
  char *strptr1, *strend;
  const char *strptr2;
  static char rtn_path[4096];
  strend = rtn_path + 4096;
  while ((strptr1 < strend) && (*strptr2 != '\0'))
    {
      strptr1++;
      strptr2++;
    }
}


-- 
           Summary: [4.2 regression] ICE in extract_insn, at recog.c:2077 on
                    s390
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com
GCC target triplet: s390-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28717