{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"if"}]}
        if sess.target.arch == "nvptx64" {
    if llvm_version < (21, 0, 0) {
            // LLVM 21 updated the default layout on nvptx: https://github.com/llvm/llvm-project/pull/124961