On Mon, May 18, 2015 at 01:01:42PM -0700, Ravi Kerur wrote:
> Background:
> After preliminary discussion with John (Zhihong) and Tim from Intel it was
> decided that it would be beneficial to use AVX/SSE intrinsics for memcmp
> similar to memcpy that had been implemeneted. In addition, we decided t
Hi,
I as glibc developer that wrote current strcmp code have some comments.
First is that gcc builtins for *cmp are garbage that produce rep cmpsb
which is slower than byte-by-byte loop. So compile your test again with
-fno-builtin-memcmp and your performance gain will probably disappear.
Then t
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