On Tue, Jun 11, 2013 at 09:30:29PM +0200, Marc Glisse wrote:
> >I'd be curious how often this triggers in GCC itself as well.
>
> Do you know a convenient way to test that?
Perhaps you could put in the
if (gimple_assign_rhs_code (stmt) == TREE_CODE (gimple_assign_lhs (stmt))
&& operand_equal_p (gimple_assign_rhs1 (stmt),
gimple_assign_lhs (stmt), 0))
{
...
}
something like
FILE *f = fopen ("/tmp/self", "a");
fprintf (f, "%s ", main_input_filename);
print_gimple_stmt (f, stmt, 0, TDF_VOPS|TDF_MEMSYMS);
fclose (f);
(completely untested)
Marek
