https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116518
--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> --- I wonder if DSE can use gimple_call_from_new_or_delete even without -fassume-sane-operator-new. In normal use of operator delete we know that the object in question was destroyed and thus memory is undefined. Now we mark also __builtin_operator_new/delete uses and in this case we know delete can not inspect the memory in useful way since it does not know how what libstdc++ does with it.
