Add another container for LLVM modules. This one stores one
`llvm::Module` per function (all modules share the same
`llvm::LLVMContext` for performance reasons).
Add an enum to explicitly specify the `TaskArgumentAccess` of a given
`Pipe`. This is needed because in some cases it's required to manually
specify the `READ` or `WRITE` access.
In the constructor of `InitRevng` also call all the `llvm::initialize*`
functions. This is done to be less implementation-specific and having
these functions be called in
`LLVMPipelineRegistry.libraryInitialization`.
The `name` parameter of the `nanobind::class_` constructor needs to be
NULL-terminated. Copy the `StringRef` to a temporary string to add the
missing `\0`.
`/` is now supported in names except for the parts of the model that use
the name as the key, i.e., `DynamicFunction` and `LocalIdentifier`.
Eventually, `/` should be allowed there as well, but we first need to
make sure that when they end up in a location they are properly
escaped/unescaped.
The implementation of `simplifyTerminator` is very specific to the
operations of IDS, can be easily misused, and is not currently used
anywhere else in the codebase.
This commit drops libptc in favor of its new form libtcg.
It brings several improvements, among which:
* The QEMU version we work on has been upgraded.
* CPUStateAccessAnalysis has been reimplemented in a way that makes it
easier to debug and solves some limitations (e.g., tracking leaking
pointers).
* Identification of pieces of the CPU state that are read by each helper
and fixing access to the CPU state is now performed at build-time.
* We no longer mmap the code we need to translate, dropping all the
issues related to code that needed to be mapped where something is
already present.
* We now have two distinct flavors of helper modules: the full one and
the "slim" one. The latter contains the definition only of functions
we intend to inline. It is used in most of the pipeline, a good thing
since we spend less time optimizing code we don't really care about.
The full module is only used on the re-compilation branch of the
pipeline.
* We no longer split the `cpu_loop` function.
* We change MetaAddress to rely on architectures from `model::` as
opposed to the LLVM ones.
* We no longer attach debug info to LLVM IR containing the original
assembly.
* We now verify that the lifted code only contains code we expect.
Giacomo Vercesi