In addition to the component build, this enables the standalone example
to be build as part of a monolithic LLVM build by using the LLVM
external projects mechanism (`LLVM_EXTERNAL_PROJECTS`).
Reviewed By: stephenneuendorffer, stellaraccident
Differential Revision: https://reviews.llvm.org/D143718
This adds a minimal out-of-tree dialect template which can be used to start work on a standalone dialect implementation without having to integrate it in the main LLVM tree.
It mostly sets up the directory structure and provides CMakeLists.txt files to build a dialect library, an opt-like tool to operate on that dialect as well as tests. It could be expanded in the future to add examples of more user-defined operations, types, attributes, generated enums, transforms, etc. and linked to a tutorial.
Differential Revision: https://reviews.llvm.org/D77133
