[Bug tree-optimization/31081] [4.3 Regression] Inliner messes up SSA for abnormals

[hubicka at gcc dot gnu dot org]

------- Comment #15 from hubicka at gcc dot gnu dot org  2007-12-29 22:31 -------
Well, I would personally not worry that much about pesimization.  The current
behaviour of increasing register pressure is worse.  We definitly can insert
the initialization to common dominator of all uses of the initialized SSA name,
but the dominator tree nor the uses are readily available and I am not
convinced it is worth the effort.  I did some behchmarking on C++ benchmarks
with patch initializing to 0 and found no regressionons.  I will send patch
shortly (the version I tested had little bug causing occasitonal ICEs)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31081