gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/test/MC/AArch64/armv9.2a-mec.s",
    "//llvm/test/MC/AArch64/armv9.4-lse128.s",
    "//llvm/test/MC/AArch64/armv9.4a-gcs.s",
    "//llvm/test/MC/AArch64/armv9.4a-lse128-diagnostics.s",
    "//llvm/test/MC/AArch64/armv9.4a-lse128.s",
    "//llvm/test/MC/AArch64/armv9.5a-cpa.s",
    "//llvm/test/MC/AArch64/armv9.6a-mpam-diagnostics.s",
    "//llvm/test/MC/AArch64/armv9.6a-mpam.s",
    "//llvm/test/MC/Disassembler/AArch64/armv9.4a-gcs.txt",
    "//llvm/test/MC/Disassembler/AArch64/armv9.4a-lse128.txt",
    "//llvm/test/MC/Disassembler/AArch64/armv9.5a-cpa.txt",
    "//llvm/test/MC/Disassembler/AArch64/armv9.6a-mpam.txt",
    "//llvm/test/MC/Disassembler/AArch64/armv9a-mec.txt"
  ],
  "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": []
}