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Re: gcc will become the best optimizing x86 compiler
Hi,
On Mon, 28 Jul 2008, Agner Fog wrote:
> Glibc 2.8 is still almost 5 times slower than the best function
> libraries for unaligned data on Intel Core 2, and the default builtin
> function is slower than any other implementation I have seen (copies 1
> byte at a time!).
You must be doing something wrong. If the compiler decides to inline the
string ops it either knows the size or you told it to do it anyway
(-minline-all-stringops or -minline-stringops-dynamically). In both cases
will it use wider than byte moves when possible.
Ciao,
Michael.