------- Additional Comments From kazu at cs dot umass dot edu 2004-12-10 20:14 ------- Subject: Re: [4.0 regression] loop miscompilation at -O1 (-ftree-ch)
Hi Jeff, > BTW, I may have a nice clean way to deal with this problem which doesn't > depend on us not walking the SSA_NAME_VALUE chain. > > I'm looking into it now... That would be great. FYI, the only reason I am sticking to correct maintanance of SSA_NAME_VALUE is that thread_across_edge is not the only function that translates PHI results to PHI arguments on edge E. lookup_avail_expr, for example, also uses SSA_NAME_VALUE, and we do call lookup_avail_expr at tree-ssa-dom.c:582 without translating PHI arguments on our own. Kazu Hirata -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18694 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
