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Also allow options to be set via a pragma in Sail files
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Revert a change to string_of_bits because it broke all the RISC-V
tests in OCaml. string_of_int (int_of_string x) is not valid because x may not
fit within an integer.
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Particularly useful when execute has been split up (e.g., on RISC-V).
Only enabled on Coq for now.
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otherwise some other parts don't work properly.
Also update RISC-V patch.
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Also required some solver fixes:
- make sure that ArithFacts are always cleared to avoid loops
- extract_properties should do the goal first because it might add extra
work to do in the hypotheses
- unfolding should come before extract_properties
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constructed when a function call, cast, or binder demands them, removing
some ambiguous corner cases.
Also
- Don't simplify nexps before printing (note that we usually end up
needing a (8 * x) / 8 lemma as a result)
- More extraction of properties in the goal
- Splitting of conditionals/matches in goals (which can occur more often
because of the new positions of build_ex in definitions)
- Try simple solving first to improve speed / reduce proof sizes / help
fill in metavariables (because manipulating the goal can interfere with
instantiating them)
- Update RISC-V patch
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and use the original ids rather than fresh ones; both to allow referring to matched ids in guards
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Add some builtins to the C sail lib.
Enable some gcc warnings.
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typing
Added a regression test as c/test/downcast_fn.sail
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constructors
Add a new printing function for debugging that recursively prints
constructor types.
Fix an interpreter bug when pattern matching on constructors with
tuple types.
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Now all we need to do is make sure the RISC-V builtins are mapped to
the correct C functions, and RISC-V in C should work
(hopefully). We're still missing some of the functions in sail.c for
the mappings so those have to be implemented.
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Requires a recent Lem version that supports generating session-qualified
imports, e.g. revision rems-project/lem@d92b077f1781765a65082c815ff363ef79499860
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Allow pat_lits rewrite to map L_unit to wildcard patterns, rather than
introducing eq_unit tests as guards.
Add a fold_function and fold_funcl functions in rewriter.ml that apply
the pattern and expression algebras to top-level functions, which
means that they correctly get applied to top-level function patterns
when they are used. Currently modifying the re-writing passes to do
this introduces some bugs which needs investigated further. The
current situation is that top-level patterns and patterns elsewhere
are often treated differently because rewrite_exp doesn't (and indeed
cannot, due to how the re-writer is structured) rewrite top level
patterns.
Fix pattern completeness check for unit literals
Fix a bug in Sail->ANF transform where blocks were always annotated
with type unit incorrectly. This caused issues in pattern literal
re-writes where the guard was a block returning a boolean. A test case
for this is added as test/c/and_block.sail.
Fix a bug caused by nested polymorphic function calls and matching in
top-level patterns. Test case is test/c/tl_poly_match.sail.
Pass location info through codegen_conversion for better error
reporting
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unnecessary problems with mappings/pat_to_exp
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guards
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exp_of_mpat
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cleaner generated code and reduced compiler warnings
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Interpreter used a re-write (vector concat removal) that is dependent
on the vector_string_to_bit_list rewriting pass. This fixes the
interpreter to work without either vector concat removal, or turning
bitstrings into vector literals like [bitzero, bitzero, bitone]. This
has the upside of reducing the number of steps the interpreter needs
for working with bitvectors so should improve interpreter performance.
We also now test all the C compilation tests behave the same using the
interpreter. Currently the real number tests fail due to limitations
of Lem's rational library (this must be fixed in Lem). This required
supporting configuration registers in the interpreter. As such the
interpreter was refactored to more cleanly process registers when
building an initial global state. The functions are also collected
into the global state, which removes the need to search for them in
the AST every time a function call happens. This should not only
improve performance, but also removes the need to pass an AST into the
interpretation functions.
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an explicit rewrite step in Rewrites, just before pat_lits
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generated id pattern"
This reverts commit 9fdd1ecbed32ebb408256628b6661ccbf5f16c18.
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pattern
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This change allows the RISC-V spec to compile to C, but more testing
is needed to ensure it works correctly.
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Make the C l-expression type in Sail more generic and expressive, and
refactor the generation of conversions into a seperate
codegen_conversion function, which can handle more complex cases than
the previous more ad-hoc method.
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Test that basic bi-directional mappings compile correctly
Test that a minimal file importing the prelude compiles correctly
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