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.

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

You can use -OaLOOP=16 with fpc. However, at least on my machines (mostly AMDs) I never saw an effect of this except in very synthetic benchmarks compared with the standard value 4.

I am using Shark on OSX 10.3.9 . Is there any way to pass parameters to an assembler and/or linker ?

Assembler: no
Linker: -k