syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     //        // Setup Windows compiler runtime calls.
context_before:     //          Subtarget.isTargetWindowsItanium()) {
context_after:     //        setLibcallName(RTLIB::SDIV_I64, "_alldiv");