gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//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"
  ]
}
gn analyze input:
{
  "files": [
    "//libcxx/docs/ReleaseNotes/20.rst",
    "//libcxx/docs/ReleaseNotes/21.rst",
    "//libcxx/docs/ReleaseNotes/22.rst",
    "//libcxx/include/__flat_map/flat_map.h",
    "//libcxx/include/__flat_map/flat_multimap.h",
    "//libcxx/include/__flat_set/flat_multiset.h",
    "//libcxx/include/__flat_set/flat_set.h",
    "//libcxx/include/__fwd/vector.h",
    "//libcxx/test/std/containers/container.adaptors/flat.map/types.verify.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.multimap/types.verify.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.multiset/types.verify.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.set/types.verify.cpp",
    "//libcxx/test/std/utilities/charconv/charconv.from.chars/integral.pass.cpp",
    "//libcxx/test/std/utilities/charconv/charconv.from.chars/integral.roundtrip.pass.cpp",
    "//libcxx/test/std/utilities/charconv/charconv.to.chars/integral.pass.cpp",
    "//libcxx/test/support/charconv_test_helpers.h",
    "//llvm/lib/CodeGen/AtomicExpandPass.cpp",
    "//llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp",
    "//llvm/test/CodeGen/SystemZ/atomic-load-09.ll",
    "//llvm/test/CodeGen/SystemZ/atomic-store-08.ll",
    "//llvm/test/CodeGen/SystemZ/atomic-store-09.ll",
    "//llvm/test/MC/RISCV/rvy-invalid-attributes.s",
    "//llvm/test/Transforms/AtomicExpand/LoongArch/load-store-atomic.ll",
    "//llvm/test/Transforms/AtomicExpand/Mips/atomicrmw-vector.ll",
    "//llvm/test/Transforms/AtomicExpand/PowerPC/cmpxchg.ll",
    "//llvm/test/Transforms/AtomicExpand/SystemZ/libcall-argext.ll",
    "//llvm/test/Transforms/AtomicExpand/SystemZ/lit.local.cfg"
  ],
  "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