Texas Instruments TMS320C64X Programmer's Reference Manual page 33

Implementation Notes
Benchmarks
-
Bank Conflicts: No bank conflicts occur.
-
Interruptibility: The code is interrupt-tolerant but not interruptible.
-
The inner loop is unrolled 8 times.
-
The outer loop is unrolled 4 times.
-
The outer loop is conditionally executed in parallel with the inner loop. This
allows for a zero overhead outer loop.
Cycles nx<40:
nx>=40: nx*nr/8 + 2*nr + 20
Codesize 304 bytes
6*nr*nr/4 + 20
C64x+ DSPLIB Reference
DSP_autocor
4-5