https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116398
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- BTW, in gcc 14 we applied the PR101523 in Fedora with a hack to only start rejecting these simplifications with no i2 modifications after accepting 1000 of those in a function (so get the PR101523 compile time/memory improvements for the really large cases while not affecting code generation in most reasonably sized functions. I've measured how many times at most is I2 unchanged during a bootstrap + regtest. x86: 134 aarch64: 736 (gimple-match-1.cc) s390x: 635 (gimple-match-*) ppc64le: 620 (gimple-match-*) while certain pathological testcases trigger it more than 10,000 times. With the limit in place this patch doesn't affect common code.).
