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/IR/DebugInfo.cpp",
    "//llvm/unittests/IR/DebugInfoTest.cpp",
    "//mlir/lib/Target/SPIRV/Serialization/Serializer.cpp",
    "//mlir/lib/Target/SPIRV/Serialization/Serializer.h",
    "//mlir/test/Target/SPIRV/debug-negative.mlir",
    "//mlir/test/Target/SPIRV/debug.mlir",
    "//offload/plugins-nextgen/cuda/src/rtl.cpp"
  ],
  "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": []
}