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pru: Compile the irq_poll() function with -O2 optimization

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Compile the PRU binary with -Os optimization, but request that the
timer dispatch code be compiled with -O2 optimization.  This improves
the performance of timers slightly.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-08-15 11:05:30 -04:00
parent 71bb7acb8e
commit 0adea120cd
2 changed files with 2 additions and 2 deletions
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docs/Features.md
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@ -86,7 +86,7 @@ represent total number of steps per second on the micro-controller.
| 20Mhz AVR | 189K | 125K |
| 16Mhz AVR | 151K | 100K |
| Arduino Due (ARM) | 382K | 337K |
| Beaglebone PRU | 680K | 680K |
| Beaglebone PRU | 689K | 689K |
On AVR platforms, the highest achievable step rate is with just one
stepper stepping. On the Due, the highest step rate is with two