[Bug middle-end/68870] [6 Regression] ICE on valid code at -O1, -O2 and -O3 on x86_64-linux-gnu

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68870

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or change genmatch so that it stops looking if it sees SSA_NAMEs in free list.