Always.

James Newtons Massmind wrote:

>Is it just me or is assembly sometimes easier than C?
>
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>>-----Original Message-----
>>From: piclist-bounces@MIT.EDU 
>>[mailto:piclist-bounces@MIT.EDU] On Behalf Of Sergio Masci
>>Sent: 2004 Oct 06, Wed 11:13
>>To: Microcontroller discussion list - Public.
>>Subject: [PIC] new optimisation in XCSB
>>
>>Hi all,
>>
>>I hope you will agree that the following info is worth 
>>mentioning. Version 1.7.0 of the xcsb compiler now also 
>>implements result promotion optimisation. The following xcsb 
>>source code is compiled into just 3 machine instructions
>>
>>hwreg PORTA = 5
>>hwreg PORTB = 6
>>
>>const RA3 = (&PORTA << 3) + 3
>>const RB4 = (&PORTB << 3) + 4
>>
>>proc inline set_bit(uint id)
>>        *(id >> 3) |= (1 << (id & 7))
>>endproc
>>
>>proc inline ubyte test_bit(uint id)
>>        return (*(id >> 3) & (1 << (id & 7))) != 0 endproc
>>
>>proc main()
>>        if test_bit(RA3) == 1 then
>>                set_bit(RB4)
>>        endif
>>endproc
>>
>>
>>Regards
>>Sergio Masci
>>
>>http://www.xcprod.com/titan/XCSB - optimising PIC compiler
>>
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