Constant intel_tsx_rtm::intrinsics::_XABORT_DEBUG

pub const _XABORT_DEBUG: u32 = 1 << 4

If this flag is in the return code from _xbegin(), and the return code was not _XBEGIN_STARTED, then a transaction was aborted by the CPU because a debug trap was hit. It may be worth retrying the transaction if the _XABORT_RETRY flag is set. This flag should not be in the return code in normal, production use.