gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libc/shared/math.h",
    "//libc/shared/math/ufromfp.h",
    "//libc/shared/math/ufromfpbf16.h",
    "//libc/shared/math/ufromfpf.h",
    "//libc/shared/math/ufromfpf128.h",
    "//libc/shared/math/ufromfpf16.h",
    "//libc/shared/math/ufromfpl.h",
    "//libc/shared/math/ufromfpx.h",
    "//libc/shared/math/ufromfpxbf16.h",
    "//libc/shared/math/ufromfpxf.h",
    "//libc/shared/math/ufromfpxf128.h",
    "//libc/shared/math/ufromfpxf16.h",
    "//libc/shared/math/ufromfpxl.h",
    "//libc/src/__support/math/CMakeLists.txt",
    "//libc/src/__support/math/ufromfp.h",
    "//libc/src/__support/math/ufromfpbf16.h",
    "//libc/src/__support/math/ufromfpf.h",
    "//libc/src/__support/math/ufromfpf128.h",
    "//libc/src/__support/math/ufromfpf16.h",
    "//libc/src/__support/math/ufromfpl.h",
    "//libc/src/__support/math/ufromfpx.h",
    "//libc/src/__support/math/ufromfpxbf16.h",
    "//libc/src/__support/math/ufromfpxf.h",
    "//libc/src/__support/math/ufromfpxf128.h",
    "//libc/src/__support/math/ufromfpxf16.h",
    "//libc/src/__support/math/ufromfpxl.h",
    "//libc/src/math/generic/CMakeLists.txt",
    "//libc/src/math/generic/ufromfp.cpp",
    "//libc/src/math/generic/ufromfpbf16.cpp",
    "//libc/src/math/generic/ufromfpf.cpp",
    "//libc/src/math/generic/ufromfpf128.cpp",
    "//libc/src/math/generic/ufromfpf16.cpp",
    "//libc/src/math/generic/ufromfpl.cpp",
    "//libc/src/math/generic/ufromfpx.cpp",
    "//libc/src/math/generic/ufromfpxbf16.cpp",
    "//libc/src/math/generic/ufromfpxf.cpp",
    "//libc/src/math/generic/ufromfpxf128.cpp",
    "//libc/src/math/generic/ufromfpxf16.cpp",
    "//libc/src/math/generic/ufromfpxl.cpp",
    "//libc/test/shared/CMakeLists.txt",
    "//libc/test/shared/shared_math_constexpr_test.cpp",
    "//libc/test/shared/shared_math_test.cpp",
    "//utils/bazel/llvm-project-overlay/libc/BUILD.bazel"
  ],
  "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