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turnip: implement VK_KHR_pipeline_executable_properties

Merged Danylo Piliaiev requested to merge Danil/mesa:turnip/feature/VK_KHR_pipeline_executable_properties into master

Loosely based on ANV implementation.

For executable's internal representation we output:

  • Initial NIR after spirv_to_nir
  • Final optimized NIR
  • IR3 disassembly

Note, that vkGetPipelineExecutablePropertiesKHR is required to return executable properties even if pipeline was not created with CAPTURE_STATISTICS or CAPTURE_INTERNAL_REPRESENTATIONS bits set. So the executables array is unconditionally populated, however NIR and IR3 disassemlies are filled only when CAPTURE_INTERNAL_REPRESENTATIONS is set.

Passes dEQP-VK.pipeline.executable_properties.*
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