[fpc-devel] Little feature teaser

Sven Barth pascaldragon at googlemail.com
Sat Aug 3 23:31:31 CEST 2013

On 03.08.2013 22:50, Florian Klämpfl wrote:
> Am 03.08.2013 17:19, schrieb Sven Barth:
>> On 03.08.2013 13:12, Florian Klämpfl wrote:
>>>> First, FPC does not loop unrolling by default, you need -Ooloopunroll,
>>>> second, the loop is relatively long, so let the compiler assume a long
>>>> pipeline with - Cppentium4
>>> -Oopentium4 it is.
>> Are you sure that you don't mean -Oppentium4? The compiler complains
>> with —Oopentium4. And it doesn't change anything (also with
>> -Ooloopunroll) :(
> There was indeed a mistake in optunroll.pas, -Oppentium4 -Ooloopunroll
> should work now.

Jupp, it indeed works now. Now the compiler would "just" need to detect 
that the for loop is basically only using constants and evaluate that at 
compile time... but that's a wish for another day ;)

And the open array case of course :P - though I did just take a look at 
it and handling all strange cases of left sides of vecnodes which 
contain an open array argument somewhere might be troublesome -.-


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