Texas Instruments TMS320C64X Manual de usuario descargar pdf (Pagina 92)

DSP_maxidx

4-64

Implementation Notes

- Bank Conflicts: No bank conflicts occur.

- Interruptibility: The code is interrupt-tolerant but not interruptible.

- The code is unrolled 16 times to enable the full bandwidth of LDDW and

MAX2 instructions to be utilized. This splits the search into 16 sub-ranges.

The global maximum is then found from the list of maximums of the

sub-ranges. Then, using this offset from the sub-ranges, the global

maximum and the index of it are found using a simple match. For common

maximums in multiple ranges, the index will be different to the above C

code.

- This code requires 40 bytes of stack space for a temporary buffer.

Benchmarks Cycles 5 * nx / 16 + 42

Codesize 388 bytes

1 2 ... 87 88 89 90 91 92 93 94 95 96 97 ... 168 169

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Texas Instruments TMS320C64X Manual de usuario Pagina 92