Deja News Toolbar Search over 20,000 high-tech jobs Click here for over 20,000 high-tech jobs message/thread Message 238 of 25 for search * help Re: What's Diabolo? (and who's Po Ching?) Author: Cameron Kaiser Date: 1999/02/23 Forum: comp.sys.cbm sponsored by: eBay more headers author posting history post reply _________________________________________________________________ John/Lori writes: >>>What do you mean "the optimizer is rather, er, overzealous."? >>... is the overzealous part. It tries to find complimentary instructions and Eeek, complementary even. Sheesh, I need a speeeling lesson. >>I don't know if any optimisers do stuff like this. Probably, but I have no >>formal degree in computer science, so this is all stuff I've discovered. >That's sort of the basic form of "peep hole" optimization, and maybe the >first, (it's usually the first mentioned) Explain "peep hole" optimisation. >You also have to be careful you don't mess things up by "nuking" >the target's of GOTO's and such. Yeah, that too. Like I said, it would take a pathological case, but it's possible to do (and a maddening bug to root out). >What I really meant was how does the RTL work? >shift and add, table look ups, Booth's algorithm etc. Shift and add, I think. I stole it from Steve Judd and modified it slightly. The original code is at the Fridge. Booth's algorithm? >I'd love to see it. >I'd think, in light of my prior admissions about my own efforts, >you'd realise I have a strong stomach and my chronic infirmities >are already aggravated :) I'll try to dig it up. It will take me a couple of days, since I haven't been home much to really sit down at the 128 lately (work and research, bleh). -- Cameron Kaiser * cdkaiser.cris@com * powered by eight bits * operating on faith -- supporting the Commodore 64/128: http://www.armory.com/~spectre/cwi/ -- head moderator comp.binaries.cbm * cbm special forces unit $ea31 (tincsf) personal page http://calvin.ptloma.edu/~spectre/ * "when in doubt, take a pawn" _________________________________________________________________ view for bookmarking text only mail this message to a friend post reply << prev · next >> subscribe to comp.sys.cbm SPONSORED LINKS Yellow Pages · Bid on Bargains · Shopping · Free Stuff · 5¢ long distance AutoConnect · Trade with Datek · Auctions & Classifieds · GET IT NOW @ NECX Home · Communities · My Deja News · Power Search · Post About Deja News · Ad Info · Our Advertisers ____________________________________________________ Copyright © 1995-99 Deja News, Inc. All rights reserved. Conditions of use · Site privacy statement reviewed by TRUSTe