The following table shows how each intrinsic maps to d3d assembly and the
flags that appear in the tpf bytecode, in binary.
GroupMemoryBarrier() sync_g 0010
GroupMemoryBarrierWithGroupSync() sync_g_t 0011
DeviceMemoryBarrier() sync_uglobal 1000
DeviceMemoryBarrierWithGroupSync() sync_uglobal_t 1001
AllMemoryBarrier() sync_uglobal_g 1010
AllMemoryBarrierWithGroupSync() sync_uglobal_g_t 1011