Add ARM assembly optimized memcpy for RP2350 #2552
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33% faster for 4K memcpy using DMAMemcyp example With this assembly: CPU: 4835 clock cycles for 4K DMA: 2169 clock cycles for 4K Using stock Newlib memcpy: CPU: 7314 clock cycles for 4K DMA: 2175 clock cycles for 4K
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33% faster for 4K memcpy using DMAMemcyp example
With this assembly:
CPU: 4835 clock cycles for 4K
DMA: 2169 clock cycles for 4K
Using stock Newlib memcpy:
CPU: 7314 clock cycles for 4K
DMA: 2175 clock cycles for 4K
(What's interesting is that if we place this in RAM it's actually slower in this test because the CPU instruction fetch will fight with the data read and write, causing stalls...neat!)