http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58400
Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amylaar at gcc dot gnu.org --- Comment #8 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> --- Created attachment 32285 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32285&action=edit patch made as an example how to debug gcc here is a patch - not regtested. you might also consider to put the three non-constriant uses of [satisfies_constraint_]"U" in predicates.md into a different constraint /vpredicate. And delete the unused fix_bit_operand,