gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Lower/OpenMP/ReductionProcessor.cpp",
    "//flang/lib/Optimizer/Builder/FIRBuilder.cpp",
    "//flang/test/Lower/OpenMP/Todo/reduction-allocatable.f90",
    "//flang/test/Lower/OpenMP/parallel-reduction-allocatable-array.f90",
    "//flang/test/Lower/OpenMP/parallel-reduction-array.f90",
    "//flang/test/Lower/OpenMP/parallel-reduction-array2.f90",
    "//flang/test/Lower/OpenMP/parallel-reduction3.f90",
    "//flang/test/Lower/OpenMP/wsloop-reduction-allocatable.f90",
    "//flang/test/Lower/OpenMP/wsloop-reduction-array-assumed-shape.f90",
    "//flang/test/Lower/OpenMP/wsloop-reduction-array.f90",
    "//flang/test/Lower/OpenMP/wsloop-reduction-array2.f90",
    "//utils/bazel/llvm-project-overlay/mlir/BUILD.bazel",
    "//utils/bazel/llvm-project-overlay/mlir/build_defs.bzl"
  ],
  "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": []
}