gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/test/CodeGenHLSL/builtins/abs.hlsl",
    "//clang/test/CodeGenHLSL/builtins/ceil.hlsl",
    "//clang/test/CodeGenHLSL/builtins/cos.hlsl",
    "//clang/test/CodeGenHLSL/builtins/floor.hlsl",
    "//clang/test/CodeGenHLSL/builtins/log.hlsl",
    "//clang/test/CodeGenHLSL/builtins/log10.hlsl",
    "//clang/test/CodeGenHLSL/builtins/log2.hlsl",
    "//clang/test/CodeGenHLSL/builtins/max.hlsl",
    "//clang/test/CodeGenHLSL/builtins/min.hlsl",
    "//clang/test/CodeGenHLSL/builtins/pow.hlsl",
    "//clang/test/CodeGenHLSL/builtins/sin.hlsl",
    "//clang/test/CodeGenHLSL/builtins/trunc.hlsl",
    "//clang/test/SemaHLSL/VectorOverloadResolution.hlsl",
    "//llvm/test/Transforms/SROA/vector-promotion.ll"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}