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Can keil optimize the interrupt routines?

Kenny Tsai

When I set optimize(9,size) to a interrupt function, which should be optimize for "Common Block Subroutines", but it wasn't!
All interrupt funtions contain following duplicate blocks(see BOLD):


    PUSH    ACC
    PUSH    B
    PUSH    DPH
    PUSH    DPL
    PUSH    DPH1
    PUSH    DPL1
    PUSH    DPS
    MOV     DPS,#00H
    PUSH    PSW


    MOV     PSW,#010H ;Depend on using.
    LCALL   MyFunc


    POP     PSW
    POP     DPS
    POP     DPL1
    POP     DPH1
    POP     DPL
    POP     DPH
    POP     B
    POP     ACC
    RETI

Because I have so many interrupt functions. The optimize could save some code space, isn't it?

Parents
  • 0 in reply to Graham Cole

    The optimize could save some code space, isn't it?
    I believe that if you made my_func inline the optimizer would have a better idea of what to save. E.g if my_func uses the dptr it must be saved, if not no need, but with a call it is probablyu more that the optimizer can handle to figure out if dptr is used..

    Erik

Reply
  • 0 in reply to Graham Cole

    The optimize could save some code space, isn't it?
    I believe that if you made my_func inline the optimizer would have a better idea of what to save. E.g if my_func uses the dptr it must be saved, if not no need, but with a call it is probablyu more that the optimizer can handle to figure out if dptr is used..

    Erik

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