https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85538
Matthias Kretz <kretz at kde dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |INVALID --- Comment #4 from Matthias Kretz <kretz at kde dot org> --- I can't figure out what the issue here was. Because k0 can certainly be written to and used for kortest. The only restriction is that k0 cannot be used as a writemask (predicate operand), which is not the case here. Codegen wrt. mask registers has improved considerably as well.