------- Comment #12 from sebpop at gmail dot com 2007-11-05 06:13 ------- Subject: Re: [4.0/4.1/4.2/4.3 Regression] Not elimintating the PHIs which have the same arguments
> Replacing ssa names with other ssa names willy-nilly is not always a > win. We eventually ended up with heuristics to not change loop depths > of ssa names, etc. > See also PR23821, where we reach the exact same conclusion: DOM and VRP are playing the replace SSA_NAMEs game, and we're losing to this game as the substitution is done randomly... -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28868
