gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libc/shared/math.h",
    "//libc/shared/math/expf.h",
    "//libc/src/__support/CMakeLists.txt",
    "//libc/src/__support/math/CMakeLists.txt",
    "//libc/src/__support/math/exp_float_constants.h",
    "//libc/src/__support/math/expf.h",
    "//libc/src/math/generic/CMakeLists.txt",
    "//libc/src/math/generic/expf.cpp",
    "//libcxx/test/libcxx/containers/container.adaptors/flat.set/scary.compile.pass.cpp",
    "//utils/bazel/llvm-project-overlay/libc/BUILD.bazel",
    "//utils/bazel/llvm-project-overlay/libc/test/libc_test_rules.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": []
}
running all tests due to change to blacklisted file