syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"v0,"}]}
source_snippet:                     v0, v1, v2, v3, v4, v5, v6, v7,
context_before:                     // we have no way of expressing this using clobbers.
context_after:                     v8, v9, v10, v11, v12, v13, v14, v15,