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(both off by default)
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Defined in terms of tdiv so we don't have to add it to backends that
don't already have it
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slight performance improvement and keeps compatibility with smt backend that already had a builtin for this because it can't handle the loop in the sail version. Will need implementations for prover backends.
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Disabled by default because it's fairly resource heavy.
Currently two failures: a minor bug affecting divmod.sail, and undefined
values aren't set up for set_slice_bits.sail.
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inconsistent with ocaml etc.). Rename div and mod builtins to ediv_int/emod_int and tdiv_int/tmod_int and add corresponding implementations. Add a test with negative operands. This will break existing models but will mean users have to think about which versions they want and won't accidentally use the wrong one.
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Now all ARM, RISC-V, and CHERI-MIPS all build successfully with
type-checking changes. All typechecker/c/ocaml/lem/builtin/riscv/arm
tests are now working as well.
Now the python test scripts can run sequentially with TEST_PAR=1 there's
no reason to keep the old shell versions around anymore.
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Spawning a process for every test and running every test in parallel
is quite RAM intensive (up to about 8gb) especially when running
valgrind on every test in parallel. Now we only run up to TEST_PAR
tests in parallel (default 4).
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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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Test the builtin functions by compiling them to C, OCaml, and OCaml
via Lem. Split up some of the longer builtin test programs to avoid
stack overflows when compiling to OCaml, as 3000+ line long blocks can
cause issues with some re-writing steps.
Also test constant-folding with builtins (this should reduce the
asserts in these files to assert true), and also test constant folding
with the C compilation.
Fix a bug whereby vectors with heap-allocated elements were not
initialized correctly.
Fix a bug caused by compiling and optimising empty vector literals.
Fix an OCaml test case that broke due to the ref type being used. Now
uses references to registers.
Fix a bug where Sail would output big integers that lem can't
parse. Checks if integer is between Int32.min_int and Int32.max_int
and if not, use integerOfString to represent the integer. Really this
should be fixed in Lem.
Make the python test runner script the default for testing builtins
and running the C compilation tests in test/run_tests.sh
Add a ocaml_build_dir option that sets a custom build directory for
OCaml. This is needed for running OCaml tests in parallel so the
builds don't clobber one another.
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Add new python test runner script, which allows tests to be run in
parallel before collecting the results. This makes the tests run a lot
faster, especially for the builtins and C compilation tests. Also
handles reporting errors mushc more nicely than the previous way of
doing it in shell script.
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Use nondeterministic choice by default instead of a deterministic bitstream
generator in the state, which is slightly awkward to reason about, because
every use of undefined_boolS changes the state. The previous behaviour can be
implemented as Sail code, if desired.
Also add a default implementation of internal_pick that nondeterministically
chooses an element from a list.
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Also add an additional -Oz3 flag that uses z3 to optimize some
additional types. This is currently very experimental and doesn't
fully work yet.
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Added library for simple integer arithmetic functions in lib/arith.sail
WIP TeX file for formatting latex output included in lib/sail.tex
Fixes for bugs in sail_lib
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