Is there an easy way of make unrolled loops with macros?

Is there an easy way of make unrolled loops with macros?
by psycopathicteen on 2017-11-11 (#207775)

The guy who programmed Toy Story used unrolled loops for 3D maze. Is that possible to do bass.exe or other assemblers?

Re: Is there an easy way of make unrolled loops with macros?
by rainwarrior on 2017-11-11 (#207776)

ca65 has the .repeat directive.

Re: Is there an easy way of make unrolled loops with macros?
by psycopathicteen on 2017-11-11 (#207783)

I looked through the documentation of bass.exe, and I figured out how to have a repeating macros.

Code:

define n(0)
while {n} < 16 {
jsr spawn_single_explosion
evaluate n({n}+1)
}

Re: Is there an easy way of make unrolled loops with macros?
by tokumaru on 2017-11-11 (#207785)

I always use macros to make unrolled loops. Doing it manually is too error-prone and difficult to maintain.

Re: Is there an easy way of make unrolled loops with macros?
by rainwarrior on 2017-11-11 (#207796)

In a situation where you have a way to define a macro (but no repeat), I've found this kind of thing to be a relatively straightforward / low risk of error way to unroll loops:

Code:

.macro THING index
   ; loop iteration here
.endmacro

THING 0
THING 1
THING 2
THING 3
THING 4
THING 5
; ...

Mostly this has come up for me in C or C++ cases where I knew an unroll was warranted but the compiler's optimizer wasn't going to do it on its own. (In a lot of cases just writing a for loop with a simple static range is enough to get the optimizer to unroll anyway, though. This is not something I've had to use frequently at all.)

Re: Is there an easy way of make unrolled loops with macros?
by calima on 2017-11-12 (#207830)

^This, and automated with the command to print it in comments.

// for i in `seq 0 15`; do echo THING $i; done