https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87763
--- Comment #19 from Wilco <wilco at gcc dot gnu.org> --- (In reply to Segher Boessenkool from comment #18) > https://gcc.gnu.org/ml/gcc/2019-01/msg00112.html Thanks, I hadn't noticed that yet... I need to look at it in more detail, but are you saying that combine no longer generates zero_extracts today and all patterns that rely on it must be changed to a different canonical form? I suspect the tst_5/6 cases are similar if the canonical form of rtl has changed. Note that doing (x & 63) != 0 just works fine, it's only 255 and 65535 which appear to be treated differently...
