- Update/rewrite the `circt-reduce` tool with a custom proof-of-concept
reducer for the FIRRTL dialect. This is supposed to be a pathfinding
exercise and just uses FIRRTL as an example. The intent is for other
dialects to be able to produce sets of their own reducers that will
then be combined by the tool to operate on some input IR.
At this point, `circt-reduce` can be used to reduce FIRRTL test cases by
converting as many `firrtl.module` ops into `firrtl.extmodule` ops as
possible while still maintaining some interesting characteristic.
- Extend `circt-reduce` to support exploratively applying passes to the
input in an effort to reduce its size. Also add the ability to specify
an entire list of potential reduction strategies/patterns which are
tried in order. This allows for reductions with big effect, like
removing entire modules, to be tried first, before taking a closer
look at individual instructions.
- Add reduction strategies to `circt-reduce` that try to replace the
right hand side of FIRRTL connects with `invalidvalue`, and generally
try to remove operations if they have no results or no users of their
results.
- Add a reduction pattern to `circt-reduce` that replaces instances of
`firrtl.extmodule` with a `firrtl.wire` for each port. This can
significantly reduce the complexity of test cases by pruning the
module hierarchy of unused modules.
- Move the `Reduction` class and sample implementations into a separate
header and implementation file. These currently live in
`tools/circt-reduce`, but should later move into a dedicated reduction
framework, maybe in `include/circt/Reduce`, where dialects can easily
access them and provide their own reduction implementations.
Add two functions which are intended to be exposed over an API:
- A function to heuristically locate signal port triplets with ready valid on an RTL module.
- A function which takes an RTL module and a list of those port triplets and build a 'shell' around that module which 'uplifts' the port triplets to ESI channels.
Adds an 'esi-tester' binary to execute these two functions.
This adds a -shared-libs option to llhd-sim that is analogous to the
same option for mlir-cpu-runner. If specified, those libraries are
passed to the ExecutionEngine to dynamically load and link.
* Scaffolding for Capnp-dependent ESI code
* Adding 'capnp' feature
* Replicated functionality
* Just missing the complex part: schema parsing
* Parse the generated schema, get the size out of that
* Documentation
* Adding NOLINT
* Enable cloning llvm submodule over HTTP
* Introduce C API
* Undo unrelated changes
* clang-format
* More format
* Add Header Comments
* Format
* Add basic test
* Add missing incantation
* Format
Co-authored-by: George <>
* Merge LLHD project into CIRCT
* Split LLHDOps.td into multiple smaller files
* move LLHDToLLVM init definition and prune includes
* Format tablegen files with 2 space indent, 80 col width; move out trait helper function
* Move implementation logic from LLHDOps.h to cpp file
* Empty lines for breathing space; nicer operation separators
* Move simulator to Dialect/LLHD/Simulator
* move `State.h` and `signal-runtime-wrappers.h` to lib directory
* pass ModuleOp by value
* make getters const, return ModuleOp by value
* Use isa, cast, dyn_cast appropriately
* wrap struct in anon namespace; make helpers static
* [cmake] Fold into LINK_LIBS
* fix for loops
* replace floating point with `divideCeil`
* prune redundant includes
* make llhd-sim helpers static
* remove StandardToLLVM pass registration
* move verilog printer to cpp file, add global function as public API
* Move transformation pass base classes and registration to lib, add file header boilerplate
* Few improvements
* Return diagnostics directly
* isa instead of kindof
* Improve walks
* etc.
* add 'using namespace llvm;' again
* Always pass a location when creating new ops
* Improve cmake files
* remove unnecessary `LLVMSupport` links.
* add `PUBLIC` where missing.
* move LLVMCore under `LINK_COMPONENTS`.
* Add file headers and improve simulator comments
* Some LLHDToLLVM improvements
* Fix walks.
* Use `std::array` instead of `SmallVector` when resize is not needed.
* Fix a potential sefgault by passing an ArrayRef with no data owner.
* Remove some unnecessary steps.
* Remove some unnecessary const strings.
* Add new LowerToLLVMOptions argument
The new argument was added in 10643c9ad85bf072816bd271239281ec50a52e31.
* Add missing file header boilerplate and newline
* Improve for-loop
* use static instead of anonymous namespace for functions
* fit to 80 columns, cast instead of dyn_cast
* Changes for LLVM update
* use llvm format instead of std::stringstream and iomanip
Co-authored-by: rodonisi <simon@rodoni.ch>
This also updates the README to include some building information.
Lots of caveats:
- This is all experimental
- The actual tool isn't interesting yet.
- The naming is arbitrary and will likely change.
- Much of the cmake files were cargo culted from other places
because I don't know what I'm doing.
Fabian Schuiki