6934cf8a3e0b ("RISC-V: improve string-function assembly")
b6fcdb191e36 ("RISC-V: add zbb support to string functions")
56e0790c7f9e ("RISC-V: add infrastructure to allow different str* implementations")
61a9b7129070 ("Merge patch series "Putting some basic order on isa extension lists"")