Question: When a subroutine is called on the SparcV 8 processor, saving registers on the stack can be avoided by using a save instruction to slide

When a subroutine is called on the SparcV8 processor, saving registers on the stack can be avoided by using a save instruction to slide the register window. Which one of the following jmpl instructions should the subroutine use to return control after the save instruction has been executed?
a) jmpl%o7+8,%g0
b) jmpl%i7+8,%g0

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