Hi Richard, See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93565#c8 - the problem is more generic like I suspected and it's easy to create similar examples. So while this turned out to be an easy worksaround for ctz, there general case is harder to avoid since you still want to allow beneficial multi-use cases (such as merging a shift into 2 ALU instructions).
Cheers, Wilco
