https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83801
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 43115 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43115&action=edit gcc8-pr83801.patch Untested patch, that if !is_init kind of restores the 7.x behavior of not using DECL_INITIAL if it is BLKmode or has ARRAY_TYPE, on the other hand if is_init it tries even harder now to optimize more cases. But these are non-lval, so not even inside of ADDR_EXPR and in initializers e.g. array indices should be constant too and so it really should fold into something usable in the initializer.
