This folder contains some unit tests for C++ utilities in the codebase.
In principle we aim to do most compiler related tests in the python to bring more development velocity, and only use this folder for low-level unit-tests. All tests should finish fast and not dependent on a presence of an accelerator device.
Tests are grouped by subsystem in ir/, runtime/, support/, sym/, target/, and tirx/. CMake discovers .cc files in these folders recursively. Configure and build out of source in build/, then run build/cpptest.