// useful on all architectures.
	var hotAlign, hotRequire int64

	if base.Debug.AlignHot > 0 {
		switch base.Ctxt.Arch.Name {
		// enable this on a case-by-case basis, with benchmarking.
		// currently shown:
		//   good for amd64
		//   not helpful for Apple Silicon
		//
		case "amd64", "386":
			// Align to 64 if 31 or fewer bytes remain in a cache line