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Re: [Chicken-hackers] [PATCH] Mostly fix #1604
From: |
megane |
Subject: |
Re: [Chicken-hackers] [PATCH] Mostly fix #1604 |
Date: |
Mon, 20 May 2019 20:51:59 +0300 |
User-agent: |
mu4e 1.0; emacs 25.1.1 |
address@hidden writes:
>> > Interprocedural flow-analysis is hard, we shouldn't underestimate
>> > this. What happens when we declare a type for a toplevel function?
>>
>> If you're thinking about reassigning globals, how about making
>> -fixnum-arithmetic imply -local? If globals cannot be re-defined then
>> the types are always correct.
>>
>> If fixnum-arithmetic is wanted for speed then -local is wanted anyway,
>> not to mention global inlining.
>
> I understand - but I'm wary of options implying other options. This makes
> it hard to figure out the final set of applicable settings, in the name of
> convenience
> I have made this mistake often enough. If one wants speed, "-O<n>" is probably
> the easiest and simplest way. Otherwise each option should have a single
> effect only.
Are you talking about deciding "what features should be enabled given
this set of features is requested"?
Using a simple dependency resolver with declarative dependencies makes
that really nice:
(add-option x implies: (y z) conflicts: (a b))
I used this kind of system for a toy code obfuscator many years ago when
the conditional logic to do it in code got too hairy to follow.
I think some of the options were internal and some could be given from
command line.
>
>
> felix
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, (continued)
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, megane, 2019/05/19
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, Peter Bex, 2019/05/19
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, felix . winkelmann, 2019/05/20
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, Peter Bex, 2019/05/20
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, felix . winkelmann, 2019/05/20
- Re: [Chicken-hackers] [PATCH] Mostly fix #1604, Peter Bex, 2019/05/20
Re: [Chicken-hackers] [PATCH] Mostly fix #1604, felix . winkelmann, 2019/05/20