glibc/sysdeps/x86_64/multiarch/bcopy.S

#include <sysdep.h>

	.text
ENTRY(bcopy)
	xchg	%rdi, %rsi
	jmp	__libc_memmove	/* Branch to IFUNC memmove.  */
END(bcopy)
Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7 This patch includes optimized 64bit memcpy/memmove for Atom, Core 2 and Core i7. It improves memcpy by up to 3X on Atom, up to 4X on Core 2 and up to 1X on Core i7. It also improves memmove by up to 3X on Atom, up to 4X on Core 2 and up to 2X on Core i7. 2010-06-30 15:26:11 +00:00			`#include <sysdep.h>`

			`.text`
			`ENTRY(bcopy)`
			`xchg %rdi, %rsi`
Use IFUNC memmove/memset in x86-64 bcopy/bzero Also add separate tests for bcopy and bzero. 2012-10-11 20:58:16 +00:00			`jmp __libc_memmove /* Branch to IFUNC memmove. */`
Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7 This patch includes optimized 64bit memcpy/memmove for Atom, Core 2 and Core i7. It improves memcpy by up to 3X on Atom, up to 4X on Core 2 and up to 1X on Core i7. It also improves memmove by up to 3X on Atom, up to 4X on Core 2 and up to 2X on Core i7. 2010-06-30 15:26:11 +00:00			`END(bcopy)`