[z/OS] Make sure __alignas_is_defined and __alignof_is_defined are defined on z/OS.#115368

zibi2 merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

zibi2:zs_clang_stdalign.hzibi2/llvm-project:zs_clang_stdalign.hCopy head branch name to clipboard