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* 6182 - start of support for safe handlesKartik Agaram2020-04-031-4/+4
| | | | | | | | | | | | | | So far it's unclear how to do this in a series of small commits. Still nibbling around the edges. In this commit we standardize some terminology: The length of an array or stream is denominated in the high-level elements. The _size_ is denominated in bytes. The thing we encode into the type is always the size, not the length. There's still an open question of what to do about the Mu `length` operator. I'd like to modify it to provide the length. Currently it provides the size. If I can't fix that I'll rename it.
* 6072Kartik Agaram2020-02-291-0/+2
| | | | | | | | | | | | | | I just did an experiment, and test_apps is spending over half its time (95 seconds that could be 40) redundantly clearing every stream before every test. And some of those streams are _large_; the translators for SubX and Mu use streams sizes pessimistically for the largest possible program they can handle (1MB per segment). A single test (the one in assort.subx) spends 24 seconds initializing 2 1MB-segments before processing a dozen lines of text in the blink of an eye. I'm not going to speed this up. But good to know.
* 5924Kartik Agaram2020-01-271-8/+8
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* 5897 - rename comparison instructionsKartik Agaram2020-01-161-1/+1
| | | | | | | Signed and unsigned don't quite capture the essence of what the different combinations of x86 flags are doing for SubX. The crucial distinction is that one set of comparison operators is for integers and the second is for addresses.
* 5883 - drop the `ref` keywordKartik Agaram2020-01-121-1/+1
| | | | | | | | | | When I created it I was conflating two things: a) needing to refer to just the start, rather than the whole, and b) counting indirections. Both are kinda ill-posed. Now Mu will have just `addr` and `handle` types. Normal types will translate implicitly to `addr` types, while `handle` will always require explicit handling.
* 5876 - address -> addrKartik Agaram2020-01-031-4/+4
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* 5804Kartik Agaram2019-12-081-9/+9
| | | | | Try to make the comments consistent with the type system we'll eventually have.
* 5700Kartik Agaram2019-10-171-2/+2
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* 5698Kartik Agaram2019-10-151-4/+4
| | | | Thanks Andrew Owen for reporting this typo.
* 5666 - start of sugar for structured control flowKartik Agaram2019-09-191-2/+1
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* 5592 - switch register names to lowercaseKartik Agaram2019-08-261-33/+33
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* 5485 - promote SubX to top-levelKartik Agaram2019-07-271-0/+73