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": [
    "//llvm/lib/CodeGen/CMakeLists.txt",
    "//llvm/lib/CodeGen/CodeGenOptions.cpp",
    "//llvm/lib/CodeGen/CodeGenOptions.h",
    "//llvm/lib/CodeGen/CodeGenOptions.td",
    "//llvm/lib/CodeGen/CodeGenPrepare.cpp",
    "//llvm/lib/CodeGen/RegisterUsageInfo.cpp",
    "//llvm/lib/CodeGen/TargetPassConfig.cpp",
    "//llvm/utils/gn/secondary/llvm/lib/CodeGen/BUILD.gn",
    "//utils/bazel/llvm-project-overlay/llvm/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