2,5x faster memcpy routine for MIPS devices

by **Sergey Chaban** » Jan 7, 2003 @ 9:01am

I don't know about MIPS, but ARM & SH compilers indeed inline the function if count param for memcpy is constant and small enough (and intrinsic option is enabled).
"Small enough" is like this:
For ARM: count <= 8
For SH: count < 16
But generated code copies data byte by byte (ldrb/strb or mov.b), i.e. compiler makes no assumptions about src/dest alignment.

SC

by **pazazzo** » Jan 7, 2003 @ 10:43am

by **Sergey Chaban** » Jan 7, 2003 @ 12:37pm

by **Guest** » Jan 7, 2003 @ 10:53pm

by **Dave H** » Jan 9, 2003 @ 2:02am

Ah the golden days of computing are back :D

* Smiles from ear to ear *

The perfect antidote to all this Java programming ;)

by **Digby** » Jan 9, 2003 @ 5:05am

by **brendan** » Jan 13, 2003 @ 3:30am

by **Dan East** » Jan 13, 2003 @ 5:28am

You aren't trying to do inline assembly for an ARM build are you?

Dan East

2,5x faster memcpy routine for MIPS devices

2,5x faster memcpy routine for MIPS devices

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