syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"\"On"}]}
source_snippet:         "On x86-32 targets, setting this to N causes the compiler to pass N arguments \
context_before:     regparm: Option<u32> = (None, parse_opt_number, [TRACKED TARGET_MODIFIER],
context_after:         in registers EAX, EDX, and ECX instead of on the stack for\