------- Comment #40 from bonzini at gnu dot org 2008-12-07 02:55 ------- IIUC this is a typical case in which CSE was fixing something that earlier passes messed up. Unfortunately fwprop does (better) what CSE was meant to do, but does not do what I assumed was already done before CSE.
If the problem is aliasing/FRE, then I think Richi is the one who could fix it for good in the tree passes. If there is more to it, however, I can take a look at why fwprop is generating the ugly code. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33928
