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Re: The bug where terminal and xcode ran "different"
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Re: The bug where terminal and xcode ran "different"


  • Subject: Re: The bug where terminal and xcode ran "different"
  • From: "Theodore H. Smith" <email@hidden>
  • Date: Sun, 11 Feb 2007 20:45:28 +0000


On 11 Feb 2007, at 18:51, Paul Walmsley wrote:

Don't underestimate though the performance improvements you can get from writing good STL code. I saw a great seminar by Scott Meyers a while ago where one of the conclusions was 'the guy who wrote the optimiser is probably smarter than you' :-)

I'll agree he is "probably" smarter for most people.

My first entry into PPC ASM, I found out how to write a "byte scan loop" in 3 instructions. (That's where you find the first byte in a string that matches a search byte). CodeWarrior would generate this loop in 8 instructions. And MrCpp would generate one with 4 instructions.

Mine ran over 2x faster than the CodeWarrior one, and faster than the MrCpp loop also.

If all these smart guys can get the most simplest of things wrong...
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  • Follow-Ups:
    • Re: The bug where terminal and xcode ran "different"
      • From: Jeffrey Oleander <email@hidden>
References: 
 >Re: The bug where terminal and xcode ran "different" (From: Rob Probin <email@hidden>)
 >Re: The bug where terminal and xcode ran "different" (From: John Daniel <email@hidden>)
 >Re: The bug where terminal and xcode ran "different" (From: "Theodore H. Smith" <email@hidden>)
 >Re: The bug where terminal and xcode ran "different" (From: Paul Walmsley <email@hidden>)

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