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This work makes it possible to take advantage of a compact
representation for integers in the entire system, as opposed to only
in some reduction machines. It is useful for heavily computational
applications, where even constructing terms is not possible without such
a representation.
Concretely, it replaces part of the retroknowledge machinery with
a primitive construction for integers in terms, and introduces a kind of
FFI which maps constants to operators (on integers). Properties of these
operators are expressed as explicit axioms, whereas they were hidden in
the retroknowledge-based approach.
This has been presented at the Coq workshop and some Coq Working Groups,
and has been used by various groups for STM trace checking,
computational analysis, etc.
Contributions by Guillaume Bertholon and Pierre Roux <Pierre.Roux@onera.fr>
Co-authored-by: Benjamin Grégoire <Benjamin.Gregoire@inria.fr>
Co-authored-by: Vincent Laporte <Vincent.Laporte@fondation-inria.fr>
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This prevents the existence of a few naked pointers to C heap from the OCaml
heap. VM bytecode is represented as any block of size at least 1 whose first
field points to a C-allocated string.
This representation is compatible with the Coq VM representation of
(potentially recursive) closures, which are already specifically tailored
in the OCaml GC to be able to contain out-of-heap data.
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The bytecode interpreter ensures that the stack space available at some
points is above a static threshold. However, arbitrary large stack space
can be needed between two check points, leading to segmentation faults
in some cases.
We track the use of stack space at compilation time and add
an instruction to ensure greater stack capacity when required. This is
inspired from OCaml's PR#339 and PR#7168.
Patch written with Benjamin Grégoire.
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I'm pushing this patch now because the previous treatment of such projections
in the VM was already unsound. It should however be carefully reviewed.
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and 8388851 non-constant constructor.
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Backported from a patch for v8.4 by Pierre Chambart. Part of the commit has been rendered obsolete by code reorganisation, leaving:
* OCaml runtime header files used to declare the int32, uint32, int64
and uint64 type. That got removed, and uses of those types should be replaced by the standard ones: uint32_t, int32_t, int64_t, uint64_t. Those are defined in stdint.h.
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Apparently Cysmtable.set_global_boxed is unused,
and removing it allows to get rid of a bunch of C code
concerning "boxed" things (including ACCUMULATECOND
instruction).
Still TODO: Csymtable.set_transparent_const and
Csymtable.set_opaque_const appear to be no-ops.
Should we remove them ?
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15845 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15727 85f007b7-540e-0410-9357-904b9bb8a0f7
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...with proper options for dynamic loading of C stubs. I believe this
is the preferred way of compiling C stubs. It also adds by itself
-fno-defer-pop, -Wall, -I `ocamlc -where`, so CFLAGS could also be
simplified.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11358 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@9900 85f007b7-540e-0410-9357-904b9bb8a0f7
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details).
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@9821 85f007b7-540e-0410-9357-904b9bb8a0f7
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- essai de suppression des dependances debiles. (echec)
- Application des patch debian.
Pour ring et field :
- introduciton de la function de sign et de puissance.
- Correction de certains bug.
- supression de ring_replace ....
Pour exact_no_check :
- ajout de la tactic : vm_cast_no_check (t)
qui remplace "exact_no_check (t<: type of Goal)"
(cette version forcais l'evaluation du cast dans le
pretypage).
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@9427 85f007b7-540e-0410-9357-904b9bb8a0f7
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Part contre ces cas sont detruis dans les "Definition"
(pas dans les "Lemma") je comprends pas ou ils sont enlev'e...
Si une id'ee ...
- Correction d'un bug dans vm_compute plusieurs fois signal'e par Roland.
- Meilleur compilation des coinductifs, on utilise maintenant vraimment
du lazy.
- Enfin un peu plus de doc dans le code de la vm.
Benjamin
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@9058 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@6338 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@6295 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@6245 85f007b7-540e-0410-9357-904b9bb8a0f7
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