Re: [PATCH] speed: reuse char instead of recreation in loop

Daniel Barkalow wrote:

On Mon, 25 May 2009, Thomas Spura wrote:

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Am Mon, 25 May 2009 22:16:02 +0200 schrieb Bj?rn Steinbrink:

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On 2009.05.25 19:44:10 +0000, Thomas Spura wrote:

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Move a char and a char * outside of a for loop for speed improvements

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I doubt that this makes any difference at all.

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With ints, the loop costs about 40% of speed. Without recreation, it 
should be always faster.

optimizations in this code for it to make, but, in general, letting 
variables in loops go out of scope (in C) only improves optimization 
possibilities.

Quite.  The proposed patch is more likely to slow down the code than to
speed it up.
-- 
Sincerely,
           Stephen R. van den Berg.

E Pluribus Unix.