------- Comment #4 from aldot at gcc dot gnu dot org 2008-04-18 18:00 ------- While not really useful, i dare to state that SCC(N)-VN unfortunately misses a lot of what it is ment to serve (IMHO), generally:
1) PR11832 testcase from http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11832#c0 Needs adjustment (looked into it -- AFAICR -- befor 4.3 was branched; didn't retry after you recently touching SCCVN, i admit) 2) PR5738 The testcase from http://gcc.gnu.org/bugzilla/show_bug.cgi?id=5738#c0 is completely undiagnosed (and _severely_ mishandled -- IMHO) by current SCCVN. This one is particularly mean since you may run into dominator related pitfalls very, very fast, from what i've seen (before you touched tree-ssa-pre, admitteldy). A couple of sensible and nice improvements are mentioned in ยน) above. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35972
