C6455 Disqualified loop: Software pipelining disabled

Hi

     When I compile the DSP_fft16x32_sa.sa in my project, there is "Disqualified loop: Software pipelining disabled "  in debug list. How can I solve it ?

     [DSP_fft16x32_sa.sa] "D:\CCStudio_v3.3\C6000\cgtools\bin\cl6x" -g -fr"E:/DSP_fft16x32/asm/Debug" -d"_DEBUG" -mv6400+ --mem_model:data=near -@"../Debug.lkf"    "DSP_fft16x32_sa.sa"       Disqualified loop: Software pipelining disabled       Disqualified loop: Software pipelining disabled

   Thanks!

  xinshuo

  Apr 9 13