On 27 Sep 2007 09:08:17 -0000, rguenther at suse dot de <[EMAIL PROTECTED]> wrote: > I did wonder what optimized that before... (maybe a separate bug for > this is more appropriate)
Must_def cause the optimization to work IIRC. In fact this is the reason why aggregate DSE was added was specifically to fix this testcase. See http://gcc.gnu.org/ml/gcc-patches/2006-05/msg01115.html which specifically mentions this. I am still trying to understand why we removed must_def anyways. Everything points to the removal of must_def caused many different regressions. Thanks, Andrew Pinski
