http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53787
--- Comment #10 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-07-27 09:34:41 UTC --- (In reply to comment #9) > Shouldn't IPA-CP be able to do this already? It does appear to handle > CONST_DECLs already... Only if it finds them in the call statement itself, it relies on early constant propagation to get the constants there. But (AFAIK) nothing propagates (even scalar) constants through non-gimple-registers and n is not a register because it has its address taken.