Having some trouble figuring out what the RADV failing tests means. I *think* I've installed the vulkan API validation stuff on my machine properly, and I don't get any errors running it with the validation log. So I'm not sure if this is an OK problem, if I'm not turning on the validation layers... generally I'm confused.
Are you sure the dxcompiler tests are getting run for you? In particular, look for the "Compiling shaders with dxcompiler and executing with vkd3d" line in tests/hlsl/inverse-trig.log.
Note that running these tests requires some additional setup. In particular, you'll need to pass DXCOMPILER_LIBS="-L<dxcompiler_path>" and CPPFLAGS="-DVKD3D_SHADER_UNSUPPORTED_DXIL" to confiure. The version of dxcompiler used by the CI can be found at https://github.com/microsoft/DirectXShaderCompiler/releases/download/v1.7.23...
Looking at tests/hlsl/inverse-trig.log from the CI run, it complains about "Unhandled dx intrinsic function id" with IDs 15, 16, and 17. I think those correspond to DX_ACOS, DX_ASIN, and DX_ATAN, which would make sense, and these are indeed currently unimplemented upstream.