https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116166
--- Comment #13 from Andi Kleen <andi-gcc at firstfloor dot org> --- Created attachment 58842 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58842&action=edit add a param to limit BBs for dominator pass Maybe something like this patch. It adds a check to disable the dom passes when the number of BBs per function exceeds a threshold. By default it is disabled, but you can set it with --param dom-bb-limit=10000 or similar
