message: core:ppc Add yield support
diff: @@ -55,6 +55,8 @@ DECLARE_CV_PAUSE
  # define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("yield" ::: "memory"); } } while (0)
  # elif defined __GNUC__ && defined __arm__
  # define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("" ::: "memory"); } } while (0)
  +# elif defined __GNUC__ && defined __PPC64__
  +# define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("or 27,27,27" ::: "memory"); } } while (0)
  # else
  # warning "Can't detect 'pause' (CPU-yield) instruction on the target platform. Specify CV_PAUSE() definition via compiler flags."
  # define CV_PAUSE(...) do { /* no-op: works, but not effective */ } while (0)
  