syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"x31:"}]}
source_snippet:         x31: reg = ["x31", "t6"] % not_e,
context_before:         x30: reg = ["x30", "t5"] % not_e,
context_after:         f0: freg = ["f0", "ft0"],