syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // values. LLVM will force the entire return value to be passed
context_before:                 // values that don't fit in the registers designated for return
context_after:                 // by return area pointer, while Cranelift will look at each IR level