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Index > Macroinstructions > need something like 'restore' for all defitions.

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dead_body



Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov
dead_body
need something like 'restore' directive, that will roll back all defitions.

Code:
a equ b
a equ c
a equ v

restore_all a
;instead of 
;restore a
;restore a
;restore a
    


i think, it is not hard to implement it, and such directive will not conflict with other directives.

and this directive will be faster then
Code:
rept 999 {restore a}     
.
Post 02 Dec 2006, 10:30
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7715
Location: Kraków, Poland
Tomasz Grysztar
What would it be useful for?
Post 02 Dec 2006, 11:43
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dead_body



Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov
dead_body
Quote:
What would it be useful for?


such decision will reduce amount of memory for compilation.
it will free the memory with previous values of var.

or fasm doesn't hold in memory previous values of var?
Post 02 Dec 2006, 13:45
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7715
Location: Kraków, Poland
Tomasz Grysztar
If you don't need the previous value of symbolic variable, it may be better to not restore it at all, from the performance point of view - at least since the last preprocessor re-design. At the time of that preprocessor re-write I was doing some test on this, and it's usually better to not "restore" if you don't have to.

Also, in general, it's the compiler that should designed to deal with a given language in most optimal way - not the opposite. Thus my question did really mean: when it would be useful from the LANGUAGE point of view, omitting what the given implementation of compiler is like.
Post 02 Dec 2006, 14:43
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dead_body



Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov
dead_body
thanks.
Post 02 Dec 2006, 15:25
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