On 02/25/2015 03:18 AM, John E. Malmberg wrote: > I noticed that the src/alpha/osf.S is using 3 operand jmp and jsr instructions. > > What does gas do with the third operand? It encodes it in bits 0:13 as a branch prediction hint. > The VMS Macro 64 assembler only supports 2 operand jmp/jsr instructions. Since it's a hint, you can just drop it. r~