This commit introduces a function to obtain the name assigned to a
`llvm::Function` associated to a `model::Function`. This simplifies the
codebase but also enables us to introduce an option to produce
human-friendly names for debugging/testing purposes.
Before this commit, we used to attach to call site a metadata to trace
back the call site to the CFG (i.e., `FunctionMetadata`).
This led several passes in revng-c to depend on `FunctionMetadata` just
for this.
This commit, attaches to call sites a reference to the prototype itself
(on the `revng.prototype` metadata), breaking many of such dependencies.
This commit switches `model::Type::ID` from being a GUID to be a
progressive number, in order to make things easier for humans.
On top of this, this commit introduces the following changes:
* TypeCopier: import all the necessary PrimitiveTypes and improve
handling of CustomName.
* Move Kind as the last field of the key of each TupleTree type used in
an `UpcastablePointer`.
* Update the ground truth of tests to ignore the `CustomName` in favor
of focusing on `OriginalName`.
* Increase adoption of `model::Binary::makeType`, equivalent to
`Binary.recordNewType(makeType<model::*Type>())`.
`Segment` now includes a `Type` of struct kind. This is intended to
emit the segment as a struct later in decompilation. The implementation
of name has also been added.
The control-flow graph and all its hierarchy components
have been moved from `model` to `efa`. The CFG is now
serialized onto the LLVM IR module as a metadata.
1. Hoist the logic to retrieve a model CallEdge from an llvm::CallInst
out of `getCallSitePrototype()`, in a separate `getCallEdge()`
function.
2. Modify `getCallSitePrototype()` so that the parent function's type is
optional.
Ivan Krysak