{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"let"}]}
    let (dlltool_target_arch, dlltool_target_bitness) = match sess.target.arch.as_ref() {
    // https://github.com/llvm/llvm-project-release-prs/blob/llvmorg-15.0.6/llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp#L69
        "x86_64" => ("i386:x86-64", "--64"),