> sdcc -S -mpic14 c.c
> ;  achar0 = achar0*2 + 1;
>         MOVF    _achar0,W       ;key=000,flow seq=001
>         MOVWF   r0x20   ;key=001,flow seq=001
>         ADDWF   r0x20,F ;key=002,flow seq=001
>         CLRF    r0x21   ;key=003,flow seq=001
>         RLF     r0x21,F ;key=004,flow seq=001
>         INCF    r0x20,W ;key=005,flow seq=001
>         MOVWF   _achar0 ;key=006,flow seq=001

You could try Jal ;-)

;; 005 : a = 2 * a + 1
  clrc                                    ; 0008: 1003 ;
  rlf     H'0F',w                         ; 0009: 0D0F ; 0x0F a
  addlw   H'01'                           ; 000A: 3E01 ; 1
  movwf   H'0F'                           ; 000B: 008F ; 0x0F a

But that is still not very convincing against a good assembly programmer.
How do the other (C) compilers fare?

Wouter van Ooijen
--
Van Ooijen Technische Informatica: http://www.voti.nl
Jal compiler, Wisp programmer, WLoader bootloader, PICs kopen

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