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",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//llvm/lib/CodeGen/GlobalMerge.cpp",
    "//llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp",
    "//llvm/test/DebugInfo/AMDGPU/debug-loc-copy.ll",
    "//llvm/test/tools/llvm-opt-report/Inputs/scalable.c",
    "//llvm/test/tools/llvm-opt-report/Inputs/scalable.yaml",
    "//llvm/test/tools/llvm-opt-report/scalabe.test",
    "//llvm/tools/llvm-opt-report/OptReport.cpp",
    "//mlir/lib/Bindings/Python/IRCore.cpp",
    "//mlir/lib/Bindings/Python/IRModule.h",
    "//mlir/python/mlir/dialects/_ods_common.py",
    "//mlir/test/mlir-tblgen/op-python-bindings.td",
    "//mlir/tools/mlir-tblgen/OpPythonBindingGen.cpp",
    "//utils/bazel/llvm-project-overlay/mlir/BUILD.bazel"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}