[fpc-devel] data alignment

[Jan Ruzicka]

Hi Rostya and Florian

Is there a way to align code? (specially in loops.)
A Profiler is complaining about an unaligned loop.
It gives following suggestion:
"... With gcc, use the -falign-loops=16 compiler flag (broken in gcc 
3.1; gcc 3.3 or later should be used)."
I am using Shark on OSX 10.3.9 .

Is there any way to pass parameters to an assembler and/or linker ?

Jan

On Aug 12, 2005, at 03:39, Florian Klaempfl wrote:

> Ростислав Окулов wrote:
>> How I can aligh data in FPC like in C?
>>
>> struct __declspec(align(16)) VECTOR4F
>> {
>>     float x;
>>     float y;
>>     float z;
>>     float w;
>> };
>
> FPC can align local data only up to 4 byte boundaries. Aligning to 16 
> byte
> boundaries done by the compiler requires too much extra code because 
> at every
> procedure entry the stack must be realigned so causing often a slow 
> down.
>
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