https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96653
David Malcolm <dmalcolm at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2020-08-18 --- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Thanks for filing this bug; confirmed. Appears to be creating many thousands of constraints; I think it's adding a constraint for every pair of constants for all constants in the switch statements, and thus O(N^2) constraints, where N is the number of constants, or something similar. Gah.