13b5e396a0
The intention of this PR is described https://github.com/llvm/llvm-project/issues/164197#issuecomment-3432843709 (and https://github.com/llvm/llvm-project/issues/164197#issuecomment-3432935838). When sanitizers are enabled, some additional setup (such as preloading certain libraries) seems to be required for the stubgen step to work properly (https://github.com/llvm/llvm-project/issues/164197#issuecomment-3432924034). In this case, I chose to simply skip the stubgen process, as supporting it would likely require some extra CMake logic, and type stubs don’t appear to be particularly necessary in this configuration.
An out-of-tree MLIR dialect
This is an example of an out-of-tree MLIR dialect along with a standalone opt-like tool to operate on that dialect.
Building - Component Build
This setup assumes that you have built LLVM and MLIR in $BUILD_DIR and installed them to $PREFIX. To build and launch the tests, run
mkdir build && cd build
cmake -G Ninja .. -DMLIR_DIR=$PREFIX/lib/cmake/mlir -DLLVM_EXTERNAL_LIT=$BUILD_DIR/bin/llvm-lit
cmake --build . --target check-standalone
To build the documentation from the TableGen description of the dialect operations, run
cmake --build . --target mlir-doc
Note: Make sure to pass -DLLVM_INSTALL_UTILS=ON when building LLVM with CMake in order to install FileCheck to the chosen installation prefix.
Building - Monolithic Build
This setup assumes that you build the project as part of a monolithic LLVM build via the LLVM_EXTERNAL_PROJECTS mechanism.
To build LLVM, MLIR, the example and launch the tests run
mkdir build && cd build
cmake -G Ninja `$LLVM_SRC_DIR/llvm` \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_TARGETS_TO_BUILD=host \
-DLLVM_ENABLE_PROJECTS=mlir \
-DLLVM_EXTERNAL_PROJECTS=standalone-dialect -DLLVM_EXTERNAL_STANDALONE_DIALECT_SOURCE_DIR=../
cmake --build . --target check-standalone
Here, $LLVM_SRC_DIR needs to point to the root of the monorepo.