Function rustc_codegen_llvm::declare::declare_raw_fn

pub(in declare) fn declare_raw_fn<'ll>(
    cx: &CodegenCx<'ll, '_>, 
    name: &str, 
    callconv: CallConv, 
    ty: &'ll Type
) -> &'ll Value

Declare a function.

If there’s a value with the same name already declared, the function will update the declaration and return existing Value instead.