On Tue, Jul 13, 2021 at 10:09:25AM +0800, guojiufu wrote: > >For loop looks like: > > do ; > > while (n-- > 0); /* while (n-- > low); */
(This whole loop as written will be optimised away, but :-) ) > There is a patch that could mitigate "-1 +1 pair" in rtl part. > https://gcc.gnu.org/g:8a15faa730f99100f6f3ed12663563356ec5a2c0 Does that solve PR67288 (and its many duplicates)? Segher
