syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // register pairs, so may consume 3 registers.
context_before:     // according to the ABI. 2*XLen-aligned varargs are passed in "aligned"
context_after:     let mut needed_arg_gprs = size.div_ceil(32);