Support missing AMD exclusive instructions.
Pulling in binutils assembler tests found at least one AMD exclusive instruction (I will add more if necessary) that is user-level and should be supported:
/* clzero */ RAW(0f) RAW(01) RAW(fc)
Pulling in binutils assembler tests found at least one AMD exclusive instruction (I will add more if necessary) that is user-level and should be supported:
/* clzero */ RAW(0f) RAW(01) RAW(fc)