I'm writing a program, where I have to use
about 30 times. Should I make this as subroutine, will it be more space efficient, or compiler takes care of that?Code:sound xma,[125,10] pause 100
Subroutine or repeated code, which is more memory efficient?
I'm writing a program, where I have to use
about 30 times. Should I make this as subroutine, will it be more space efficient, or compiler takes care of that?Code:sound xma,[125,10] pause 100
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Re: Subroutine or repeated code, which is more memory efficient?
Henrik could give more detailed answer, in the meantime...
A loop of 2 or 3 is structured but not always smaller in code (especially when short like yours).
But 30 times, I'd go with a loop.
You can always compile both ways and check code size (Microcode Studio posts it at the bottom).
Robert
Last edited by Demon; - 5th June 2014 at 18:14. Reason: compiler will not generate a loop for you, just repeat the instructions.
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Re: Subroutine or repeated code, which is more memory efficient?
Hi,
What happend to simply trying a couple of things yourself and see instead of just asking. I just tried it here and it took less than five minutes to try both ways and write this reply.
Same routine repeated 30 times: 458 bytes
Subroutine and 30 GOSUBs: 201 bytes
This was compiled for a 16F877A whcih is the device you had questions about the other day. And no, the compiler doesn't decide for you - it's up to you as the programmer.
/Henrik.
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Re: Subroutine or repeated code, which is more memory efficient?
YAY! I guessed right!
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Re: Subroutine or repeated code, which is more memory efficient?
Thanks!
I've tried to look at microcode studio displayed code size, but it does not seems to be in relation with actual code - I've added say 20 lines of new code, but sometimes size gets increased by only 1-2 words, sometimes - 200.
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