Re: Patch to remove undefined C code

[Bernd Schmidt]

> Looking at the above code, I noticed that there are a lot of ++ 
> operations.  I rewrote the code as:
> 
>      setup_from[0] = setup_from[1] = eaddrs[0];
>      setup_from[2] = setup_from[3] = eaddrs[1];
>      setup_from[4] = setup_from[5] = eaddrs[2];
>      setup_from += 6;
> 
> I compiled using "gcc -S -Wall -O2 -fomit-frame-pointer -m486" to generate 
> the assembler code.  The old code is 17 instructions long and the new code 
> is 11 instructions.  As well as being shorter, simple timing test indicate 
> that the new code is significantly quicker.

This is something the compiler ought to know about.


Bernd

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