------- Comment #23 from steven at gcc dot gnu dot org 2008-01-21 14:38 ------- > The similar > condition for reaching definitions is not liveness, but absence of > uses. To trim reaching definitions, one should really be looking at > the last reachable use of a definition, and trim from there.
Just to clarify, this trimming still changes the result of the reaching definitions problem, but should not change the resulting DEF-USE chains. For the reaching definitions problem itself, I don't see any way to trim it. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34884
