root/tools/perf/bench/mem-memcpy-x86-64-asm-def.h 
/* SPDX-License-Identifier: GPL-2.0 */

MEMCPY_FN(memcpy_orig,
        mem_alloc,
        mem_free,
        "x86-64-unrolled",
        "unrolled memcpy() in arch/x86/lib/memcpy_64.S")

MEMCPY_FN(__memcpy,
        mem_alloc,
        mem_free,
        "x86-64-movsq",
        "movsq-based memcpy() in arch/x86/lib/memcpy_64.S")