gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/examples/FeatureList/FeatureList.cpp",
    "//flang/examples/FlangOmpReport/FlangOmpReportVisitor.cpp",
    "//flang/include/flang/Parser/dump-parse-tree.h",
    "//flang/include/flang/Parser/parse-tree.h",
    "//flang/lib/Lower/OpenMP/OpenMP.cpp",
    "//flang/lib/Parser/openmp-parsers.cpp",
    "//flang/lib/Parser/unparse.cpp",
    "//flang/lib/Semantics/check-omp-structure.cpp",
    "//flang/lib/Semantics/resolve-directives.cpp",
    "//flang/lib/Semantics/resolve-names.cpp",
    "//flang/test/Parser/OpenMP/doacross-clause.f90",
    "//flang/test/Parser/OpenMP/from-clause.f90",
    "//flang/test/Parser/OpenMP/if-clause.f90",
    "//flang/test/Parser/OpenMP/ordered-depend.f90",
    "//flang/test/Parser/OpenMP/scan.f90",
    "//flang/test/Parser/OpenMP/target-update-to-clause.f90"
  ],
  "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