| Commit message (Collapse) | Author | Age |
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There don't really bring anything, we also correct some minor nits
with the printing function.
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Extending terms is notoriously difficult. We try to get more help from
the compiler by making sure such an extension will trigger non
exhaustive pattern matching warnings.
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We do up to `Term` which is the main bulk of the changes.
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This will allow to merge back `Names` with `API.Names`
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As per https://github.com/coq/coq/pull/716#issuecomment-305140839
Partially using
```bash
git grep --name-only 'anomaly\s*\(~label:"[^"]*"\s*\)\?\(Pp.\)\?(\(\(Pp.\)\?str\)\?\s*".*[^\.!]")' | xargs sed s'/\(anomaly\s*\(~label:"[^"]*"\s*\)\?\(Pp.\)\?(\(\(Pp.\)\?str\)\?\s*".*\s*[^\.! ]\)\s*")/\1.")/g' -i
```
and
```bash
git grep --name-only ' !"' | xargs sed s'/ !"/!"/g' -i
```
The rest were manually edited by looking at the results of
```bash
git grep anomaly | grep '\.ml' | grep -v 'anomaly\s*\(~label:"[^"]*"\s*\)\?\(Pp\.\)\?(\(\(Pp.\)\?str\)\?\s*".*\(\.\|!\)")' | grep 'anomaly\($\|[^_]\)' | less
```
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We don't have to perfom in-place updates because we actually know that there
is none on the stack. This should speed up UniMath.
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We unroll the map operation by hand in two performance-critical cases so as
not to call the generic array allocation function in OCaml, and allocate
directly on the minor heap instead. The generic array function is slow because
it needs to discriminate between float and non-float arrays. The unrolling
replaces this by a simple increment to the minor heap pointer and moves from
the stack.
The quantity of unrolling was determined by experimental measures on various Coq
developments. It looks like most of the maps are for small arrays of size lesser
or equal to 4, so this is what is implemented here. We could probably extend it
to an even bigger number, but that would result in ugly code. From what I've seen,
virtually all maps are of size less than 16, so that we could probably be almost
optimal by going up to 16 unrollings, but the code tradeoffs are not obvious. Maybe
when we have PPX?
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For the moment, there is a Closure module in compiler-libs/ocamloptcomp.cm(x)a
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Emilio Jesus Gallego Arias
Maxime Dénès
Pierre-Marie Pédrot
Jason Gross
Pierre Letouzey