English Amiga Board - View Single Post

jotd · 05 June 2021, 18:33

I saw that in Supercars 2

Code:

		move.l	a0,(a4)+	;mask
		move.l	a1,(a4)+	;data0
		move.l	a2,(a4)+	;scn0

wouldn't it be faster to use

Code:

   movem.l a0-a2,(a4)+

(and would it be equivalent) ? Maybe there's a threshold where movem is faster. Is it 2, 3, or more registers?

05 June 2021, 18:33	#200
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,209	I saw that in Supercars 2 Code: move.l a0,(a4)+ ;mask move.l a1,(a4)+ ;data0 move.l a2,(a4)+ ;scn0 wouldn't it be faster to use Code: movem.l a0-a2,(a4)+ (and would it be equivalent) ? Maybe there's a threshold where movem is faster. Is it 2, 3, or more registers?