[Bug tree-optimization/47890] New: [4.5/4.6 Regression] internal compiler error: in vect_get_vec_def_for_stmt_copy, at tree-vect-stmts.c:1186

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47890

           Summary: [4.5/4.6 Regression] internal compiler error: in
                    vect_get_vec_def_for_stmt_copy, at
                    tree-vect-stmts.c:1186
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com


Created attachment 23462
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23462
Backtrace

$ cat > bug.c
void f(char *s)
{
  signed short i;

  for (i = 0; i < 19; i = i + 1)
    s[i] = i;
}
^D
$ gcc -O3 -march=pentium4 bug.c