[PATCH 3/6] newlib: mem[p]cpy/memmove improve performance for optimized versions

[Corinna Vinschen]

On Jan 27 10:45, Alexey Lapshin wrote:
> This change improves performance on memory blocks with sizes in range
> [4..15]. Performance measurements made for RISCV machine (memset):
> 
> size  4, CPU cycles change: 50 -> 37
> size  5, CPU cycles change: 57 -> 40
> size  6, CPU cycles change: 64 -> 47
> size  7, CPU cycles change: 71 -> 54
> size  8, CPU cycles change: 78 -> 44
> size  9, CPU cycles change: 85 -> 47
> size 10, CPU cycles change: 92 -> 54
> size 11, CPU cycles change: 99 -> 61
> size 12, CPU cycles change: 106 -> 51
> size 13, CPU cycles change: 113 -> 54
> size 14, CPU cycles change: 120 -> 61
> size 15, CPU cycles change: 127 -> 68

But is that generally true for other architectures as well?


Corinna