Constant NO_GENERICS 

const NO_GENERICS: for<'ll> fn(&GenericCx<'ll, FullCx<'ll, '_>>) -> SmallVec<[Option<&'ll Metadata>; 16]> = _; // {<{closure@/rustc-dev/809936eac66c547a5127ce1da805f0d3a6789b98/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs:69:5: 69:8} as std::ops::FnOnce<(&context::GenericCx<'_, context::FullCx<'_, '_>>,)>>::call_once as for<'a, 'll, 'b> fn(&'a context::GenericCx<'ll, context::FullCx<'ll, 'b>>) -> smallvec::SmallVec<[std::option::Option<&'ll llvm::ffi::Metadata>; 16]>}

A function that returns an empty list of generic parameter debuginfo nodes.