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For example:
bitfield cr : vector(8, dec, bit) = {
CR0 : 7 .. 4,
LT : 7,
CR1 : 3 .. 2,
CR2 : 1,
CR3 : 0,
}
The difference this creates a newtype wrapper around the vector type,
then generates getters and setters for all the fields once, rather
than having to handle this construct separately in every backend.
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Also fix bug in mono analysis with generated variables
Breaks lots of typechecking tests because it generates unnecessary
equality tests on units (and the tests don't have generic equality),
which I'll fix next.
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- Add support for some internal nodes to type checker
- Add more explicit type annotations during rewriting
- Remove hardcoded rewrites for E_vector_update etc from Lem pretty-printer;
these will be resolved by the type checker during rewriting now
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Alastair's test cases revealed that using regular ints causes issues
throughout sail, where all kinds of things can internally overflow in
edge cases. This either causes crashes (e.g. int_of_string fails for
big ints) or bizarre inexplicable behaviour. This patch switches the
sail AST to use big_int rather than int, and updates everything
accordingly.
This touches everything and there may be bugs where I mistranslated
things, and also n = m will still typecheck with big_ints but fail at
runtime (ocaml seems to have decided that static typing is unnecessary
for equality...), as it needs to be changed to eq_big_int.
I also got rid of the old unused ocaml backend while I was updating
things, so as to not have to fix it.
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numbers below 129
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This is the first step towards getting the interpreter working on this branch
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For example:
val test = { ocaml: "test_ocaml", lem: "test_lem" } : unit -> unit
val main : unit -> unit
function main () = {
test ();
}
for a backend not explicitly provided, the extern name would be simply
"test" in this case, i.e. the string version of the id.
Also fixed some bugs in the ocaml backend.
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also rename NC_nat_set_bounded to NC_set (it was an int set not a nat set anyway)
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just LB_val in AST
also rename functions in rewriter.ml appropriately.
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as GPR
This was wrongly translated as an update of the vector of references.
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- Support tuples in lexps
- Rewrite trivial sizeofs
- Rewrite early returns more aggressively
- Support let bindings with ticked variables (binding both a type-level and
term-level variable at the same time)
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E_internal_let is only used for introducing local variables, not updating
existing ones.
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Modified initial_check.ml so it no longer requires type_internal. It's
still needs cleaned up in a few ways. Most of the things it's trying
to do could be done nicer if we took some time to re-factor it, and
some of the things should just be handled by the main typechecker,
leaving it as a think layer between the parse_ast and the ast.
Now that's done everything can be switched to the new typechecker and
the _new suffixes were deleted from everything except the
monomorphisation pass because I don't know the status of that.
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Initial typecheck still uses previous typechecker
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# Conflicts:
# src/lem_interp/interp.lem
# src/lem_interp/interp_inter_imp.lem
# src/lem_interp/interp_interface.lem
# src/parser.mly
# src/pretty_print_lem.ml
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data and invent rmemt and wmvt effects for them. Extend the interpreter context to include lists of tagged memory read and write functions. The memory model must round down the address to the nearest capability aligned address when reading/writing tags. Remove TAGw which is no longer needed as a result.
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searching easier.
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