gnupic: SuperOptimizer for PIC microcontrolers

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Subject: SuperOptimizer for PIC microcontrolers
From: Daniel Serpell ####@####.####
Date: 17 May 2001 22:04:41 -0000
Message-Id: <3B045F9A.8EF2A3FB@mat.utfsm.cl>

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Hi all!

I've written a superoptimizer program for PIC microcontrolers.
Take a look at http://www.atmlab.utfsm.cl/~daniel/superopt-e.html

You can use it to search short sequences of instructions, ie:

What is the shortest sequence to the function: W = SIGN( F1 ) 
( SIGN(x) = 1 if x>0, -1 if x<0, 0 if x==0 )

My program finds:

	movf	F1,W
	btfss	STATUS,Z
	iorlw	0xFF
	btfss	F1,7
	andlw	0x01

Please try it, send me comments, etc.

	Daniel Serpell
	daniel at mat.utfsm.cl

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Previous by date:	17 May 2001 22:04:41 -0000 Re: compiling GPASM and GPSIM with Suse 7.1, Eric Smith
Next by date:	17 May 2001 22:04:41 -0000 Re: gpasm, Craig Franklin
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