gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//llvm/lib/Target/AMDGPU/AMDGPULowerKernelArguments.cpp",
    "//llvm/test/CodeGen/AMDGPU/ctlz_zero_undef.ll",
    "//llvm/test/CodeGen/AMDGPU/cttz_zero_undef.ll",
    "//llvm/test/CodeGen/AMDGPU/cvt_f32_ubyte.ll",
    "//llvm/test/CodeGen/AMDGPU/llc-pipeline.ll",
    "//llvm/test/CodeGen/AMDGPU/lower-kernargs.ll",
    "//llvm/test/CodeGen/AMDGPU/lower-noalias-kernargs.ll",
    "//llvm/test/CodeGen/AMDGPU/mad-combine.ll",
    "//llvm/test/CodeGen/AMDGPU/sub.ll",
    "//llvm/test/CodeGen/AMDGPU/valu-i1.ll"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}