syntax_data: {"ast_node_type":"other","tokens":[{"end":101,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                         // FIXME: i64 is ok for g*/o* registers on SPARC-V8+ ("h" constraint in GCC),
context_before:                         _: I8, I16, I32;
context_after:                         //        but not yet supported in LLVM.