http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55219
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ebotcazou at gcc dot | |gnu.org, jakub at gcc dot | |gnu.org --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-07 14:12:57 UTC --- I believe this has been introduced by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158274 aka http://gcc.gnu.org/ml/gcc-patches/2010-04/msg00627.html change, particularly fold_binary_op_with_conditional_arg part of the patch. arg is not constant, doesn't have TREE_SIDE_EFFECTS, but is a huge expression with lots of COND_EXPRs in it, nested.