This is a program to run Zig tests for the SPIR-V target. This is currently mainly used for the compiler behavior tests, and only supports the OpenCL environment. A SPIR-V-capable OpenCL implementation is required, such as Rusticl, POCL, or Intels

In order to build the executor, we need a few system dependencies:

• The OpenCL Headers
• An OpenCL implementation. Its usually the best to link against an ICD loader so that the actual backend that is used may be swapped out at runtime, such as the Khronos OpenCL ICD Loader.
• SPIRV-Tools is required for extra validation of the module.

After obtaining these dependencies, simply run zig build to build the project.

To actually run tests, use something like the following:

$ zig test src/test_kernel.zig \
    --test-runner src/test_runner.zig \
    -target spirv64-opencl-gnu \
    -mcpu generic+Int64+Int16+Int8+Float64+Float16 \
    -fno-llvm \
    --test-cmd zig-out/bin/zig-spirv-test-executor \
    --test-cmd --platform \
    --test-cmd Intel \
    --test-cmd-bin

The devshell in flake.nix sets up an environment with a bunch of OpenCL capable drivers, such as a slim debug build of recent Mesa, Intel's CPU OpenCL runtime, and POCL 5.0.