[Ffmpeg-devel] Still struggling with -fPIC and MMX asm-code

[Tobias Grimm]

Michael Niedermayer schrieb:

>well, not exactly, the stack grows downward not upward, 
>
You're right. Of course this should be:

"movl %%"REG_b", -4(%%esp)
...
"movl -4(%%esp), %%"REG_b"



>btw, another possible solution for this case would be to
>addl %2, %%"REG_a"
>movq (%%"REG_a"), %%mm5
>subl %2, %%"REG_a"
>  
>

Is this faster than "movq (%%"REG_b", %%"REG_a"), %%mm5" ?

Tobias