gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/test/MC/AMDGPU/ds.s",
    "//llvm/test/MC/AMDGPU/invalid-instructions-spellcheck.s",
    "//llvm/test/MC/AMDGPU/literals.s",
    "//llvm/test/MC/AMDGPU/mimg-err.s",
    "//llvm/test/MC/AMDGPU/mimg.s",
    "//llvm/test/MC/AMDGPU/regression/bug28165.s",
    "//llvm/test/MC/AMDGPU/regression/bug28413.s",
    "//llvm/test/MC/AMDGPU/smrd.s",
    "//llvm/test/MC/AMDGPU/sopk.s",
    "//llvm/test/MC/AMDGPU/unknown-target-cpu.s",
    "//llvm/test/MC/AMDGPU/vintrp.s",
    "//llvm/test/MC/AMDGPU/vop1.s",
    "//llvm/test/MC/AMDGPU/vop2.s",
    "//llvm/test/MC/AMDGPU/vop3-convert.s",
    "//llvm/test/MC/AMDGPU/vop3-errs.s",
    "//llvm/test/MC/AMDGPU/vop3.s",
    "//llvm/test/MC/AMDGPU/vop_dpp.s",
    "//llvm/test/MC/AMDGPU/vop_sdwa.s",
    "//llvm/test/MC/AMDGPU/vopc.s"
  ],
  "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": []
}