------- Comment #9 from dberlin at gcc dot gnu dot org 2007-03-10 00:01 ------- Subject: Re: Unable to coalesce ssa_names <x> and <y> which are marked as MUST COALESCE
On 8 Mar 2007 20:12:16 -0000, amacleod at redhat dot com <[EMAIL PROTECTED]> wrote: > > > ------- Comment #7 from amacleod at redhat dot com 2007-03-08 20:12 ------- > Looking at the original testcase, the complaint is that _t_8232 and _t_3 are > both used in the PHI definition of _t_7. (using mainline from march 5th) > > ie, _t_7(ab) = PHI <...., _t_8232, ... , _t_3, ...> > Uh, did you not put the (ab) next to the arguments, or do they really not have SSA_NAME_OCCURS_IN_ABNORMAL_PHI set on them? (They should) > I can't really read the detailed output from FRE, but it does seem to have > replaced a bunch of expressions with _t_3, so that would appear to be the > culprit. It won't value number things with SSA_NAME_OCCURS_IN_ABNORMAL_PHI set, so it should never eliminate anything with them. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30604
