gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/docs/OpenACC-extensions.md",
    "//flang/lib/Lower/Bridge.cpp",
    "//flang/lib/Lower/OpenACC.cpp",
    "//flang/lib/Semantics/resolve-directives.cpp",
    "//flang/test/Lower/OpenACC/Todo/do-loops-to-acc-loops-todo.f90",
    "//flang/test/Lower/OpenACC/do-concurrent-collapse.f90",
    "//flang/test/Semantics/OpenACC/acc-collapse-do-concurrent.f90",
    "//llvm/utils/lit/lit/TestRunner.py",
    "//llvm/utils/lit/tests/Inputs/per-test-coverage-by-lit-cfg/name-collision/a/test.py",
    "//llvm/utils/lit/tests/Inputs/per-test-coverage-by-lit-cfg/name-collision/b/test.py",
    "//llvm/utils/lit/tests/Inputs/per-test-coverage-by-lit-cfg/per-test-coverage-by-lit-cfg.py",
    "//llvm/utils/lit/tests/Inputs/per-test-coverage/per-test-coverage.py",
    "//llvm/utils/lit/tests/per-test-coverage-by-lit-cfg.py",
    "//llvm/utils/lit/tests/per-test-coverage.py",
    "//mlir/docs/Tutorials/ExternalTutorials.md"
  ],
  "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": []
}
running all tests due to change to blacklisted file