{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"if"}]}
    if abi.conv == CanonAbi::X86(X86Call::Vectorcall) && !have_feature(sym::sse2) {
    // The `vectorcall` ABI is special in that it requires SSE2 no matter which types are being passed.
        let (span, _hir_id) = loc();