syntax_data: {"ast_node_type":"import","tokens":[{"end":88,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     //   If we use i686-unknown-windows, the LLVM IA32 MSVC generates compiler intrinsic
context_before:     // Background and Problem:
context_after:     //   _alldiv, _aulldiv, _allrem, _aullrem, _allmul, which will cause undefined symbol.