diff --git a/sysdeps/aarch64/memcmp.S b/sysdeps/aarch64/memcmp.S
index f177520d63..e33086b4eb 100644
--- a/sysdeps/aarch64/memcmp.S
+++ b/sysdeps/aarch64/memcmp.S
@@ -42,8 +42,11 @@
#define src1end x7
#define src2end x8
+#ifndef MEMCMP
+# define MEMCMP memcmp
+#endif
-ENTRY (memcmp)
+ENTRY (MEMCMP)
cmp limit, 16
b.lo L(less16)
ldp data1, data3, [src1]
@@ -197,10 +200,10 @@ L(loop64):
cneg result, result, lo
ret
-END (memcmp)
+END (MEMCMP)
#undef bcmp
-weak_alias (memcmp, bcmp)
+weak_alias (MEMCMP, bcmp)
#undef __memcmpeq
-strong_alias (memcmp, __memcmpeq)
-libc_hidden_builtin_def (memcmp)
+strong_alias (MEMCMP, __memcmpeq)
+libc_hidden_builtin_def (MEMCMP)
libc_hidden_def (__memcmpeq)
diff --git a/sysdeps/aarch64/multiarch/Makefile b/sysdeps/aarch64/multiarch/Makefile
index 988f7cec25..38952655b1 100644
--- a/sysdeps/aarch64/multiarch/Makefile
+++ b/sysdeps/aarch64/multiarch/Makefile
@@ -1,5 +1,7 @@
ifeq ($(subdir),string)
sysdep_routines += \
+ memcmp_generic \
+ memcmp_kunpeng950 \
memcpy_a64fx \
memcpy_generic \
memcpy_kunpeng950 \
diff --git a/sysdeps/aarch64/multiarch/ifunc-impl-list.c b/sysdeps/aarch64/multiarch/ifunc-impl-list.c
index ea5f5853c3..d43f6b58ee 100644
--- a/sysdeps/aarch64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/aarch64/multiarch/ifunc-impl-list.c
@@ -33,7 +33,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
INIT_ARCH ();
- /* Support sysdeps/aarch64/multiarch/memcpy.c, memmove.c and memset.c. */
+ /* Support sysdeps/aarch64/multiarch/memcmp.c, memcpy.c, memmove.c and memset.c. */
+ IFUNC_IMPL (i, name, memcmp,
+ IFUNC_IMPL_ADD (array, i, memcmp, sve, __memcmp_kunpeng950)
+ IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_generic))
IFUNC_IMPL (i, name, memcpy,
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_oryon1)
IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_a64fx)
diff --git a/sysdeps/aarch64/multiarch/memcmp.c b/sysdeps/aarch64/multiarch/memcmp.c
new file mode 100644
index 0000000000..5c3dc63068
--- /dev/null
+++ b/sysdeps/aarch64/multiarch/memcmp.c
@@ -0,0 +1,54 @@
+/* Multiple versions of memcmp. AARCH64 version.
+ Copyright (C) 2026 Free Software Foundation, Inc.
+ Copyright The GNU Toolchain Authors.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+/* Define multiple versions only for the definition in libc. */
+
+#if IS_IN (libc)
+/* Redefine memcmp so that the compiler won't complain about the type
+ mismatch with the IFUNC selector in strong_alias, below. */
+# undef memcmp
+# define memcmp __redirect_memcmp
+# include
+# include
+
+extern __typeof (__redirect_memcmp) __libc_memcmp;
+
+extern __typeof (__redirect_memcmp) __memcmp_generic attribute_hidden;
+extern __typeof (__redirect_memcmp) __memcmp_kunpeng950 attribute_hidden;
+
+static inline __typeof (__redirect_memcmp) *
+select_memcmp_ifunc (void)
+{
+ INIT_ARCH ();
+
+ if (sve)
+ {
+ if (IS_KUNPENG950 (midr))
+ {
+ return __memcmp_kunpeng950;
+ }
+ }
+ return __memcmp_generic;
+}
+
+libc_ifunc (__libc_memcmp, select_memcmp_ifunc ());
+
+# undef memcmp
+strong_alias (__libc_memcmp, memcmp);
+#endif
diff --git a/sysdeps/aarch64/multiarch/memcmp_generic.S b/sysdeps/aarch64/multiarch/memcmp_generic.S
new file mode 100644
index 0000000000..9b24610814
--- /dev/null
+++ b/sysdeps/aarch64/multiarch/memcmp_generic.S
@@ -0,0 +1,42 @@
+/* A Generic Optimized memcmp implementation for AARCH64.
+ Copyright (C) 2026 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+/* The actual memcmp code is in ../memcmp.S. If we are
+ building libc this file defines __memcmp_generic. Otherwise
+ the include of ../memcmp.S will define the normal __memcmp
+ entry points. */
+
+#include
+
+#if IS_IN (libc)
+
+# define MEMCMP __memcmp_generic
+
+/* Do not hide the generic versions of memcmp, we use them
+ internally. */
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name)
+
+# ifdef SHARED
+/* It doesn't make sense to send libc-internal memcmp calls through a PLT. */
+ .globl __GI_memcmp; __GI_memcmp = __memcmp_generic
+# endif
+
+#endif
+
+#include "../memcmp.S"
diff --git a/sysdeps/aarch64/multiarch/memcmp_kunpeng950.S b/sysdeps/aarch64/multiarch/memcmp_kunpeng950.S
new file mode 100644
index 0000000000..c8482f1649
--- /dev/null
+++ b/sysdeps/aarch64/multiarch/memcmp_kunpeng950.S
@@ -0,0 +1,146 @@
+/* Optimized memcmp for Huawei Kunpeng 950 processor.
+ Copyright (C) 2026 Free Software Foundation, Inc.
+
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ . */
+
+#include
+
+/* Assumptions:
+ *
+ * ARMv8.2-a, AArch64, Advanced SIMD, SVE, unaligned accesses
+ *
+ */
+
+.arch armv8.2-a+sve
+
+#define src1 x0
+#define src2 x1
+#define cnt x2
+#define left x3
+#define off_vl x4
+#define off_vlx2 x5
+#define off_vlx3 x6
+#define off_vlx4 x7
+
+ENTRY (__memcmp_kunpeng950)
+ whilelo p0.b, xzr, cnt
+ b.none L(equal)
+ cntb off_vl
+ ld1b z0.b, p0/z, [src1]
+ ld1b z1.b, p0/z, [src2]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ whilelo p0.b, off_vl, cnt
+ b.none L(equal)
+ cntb off_vlx2, all, mul #2
+ ld1b z0.b, p0/z, [src1, 1, mul vl]
+ ld1b z1.b, p0/z, [src2, 1, mul vl]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ whilelo p0.b, off_vlx2, cnt
+ b.none L(equal)
+ cntb off_vlx3, all, mul #3
+ ld1b z0.b, p0/z, [src1, 2, mul vl]
+ ld1b z1.b, p0/z, [src2, 2, mul vl]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ whilelo p0.b, off_vlx3, cnt
+ b.none L(equal)
+ cntb off_vlx4, all, mul #4
+ ld1b z0.b, p0/z, [src1, 3, mul vl]
+ ld1b z1.b, p0/z, [src2, 3, mul vl]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ subs left, cnt, off_vlx4
+ b.ls L(equal)
+ add src1, src1, off_vlx4
+ add src2, src2, off_vlx4
+ cmp left, off_vlx4
+ b.lo L(tail_4xvl)
+
+ .p2align 4
+L(loop_full):
+ ld1b z0.b, p0/z, [src1]
+ ld1b z1.b, p0/z, [src2]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ ld1b z0.b, p0/z, [src1, off_vl]
+ ld1b z1.b, p0/z, [src2, off_vl]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ ld1b z0.b, p0/z, [src1, off_vlx2]
+ ld1b z1.b, p0/z, [src2, off_vlx2]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ ld1b z0.b, p0/z, [src1, off_vlx3]
+ ld1b z1.b, p0/z, [src2, off_vlx3]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ add src1, src1, off_vlx4
+ add src2, src2, off_vlx4
+ subs left, left, off_vlx4
+ cmp left, off_vlx4
+ b.hs L(loop_full)
+
+L(tail_4xvl):
+ whilelo p0.b, xzr, left
+ b.none L(equal)
+ ld1b z0.b, p0/z, [src1]
+ ld1b z1.b, p0/z, [src2]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ whilelo p0.b, off_vl, left
+ b.none L(equal)
+ ld1b z0.b, p0/z, [src1, off_vl]
+ ld1b z1.b, p0/z, [src2, off_vl]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ whilelo p0.b, off_vlx2, left
+ b.none L(equal)
+ ld1b z0.b, p0/z, [src1, off_vlx2]
+ ld1b z1.b, p0/z, [src2, off_vlx2]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+ whilelo p0.b, off_vlx3, left
+ b.none L(equal)
+ ld1b z0.b, p0/z, [src1, off_vlx3]
+ ld1b z1.b, p0/z, [src2, off_vlx3]
+ cmpne p1.b, p0/z, z0.b, z1.b
+ b.any L(mismatch)
+
+L(equal):
+ mov x0, #0
+ ret
+
+L(mismatch):
+ brkb p2.b, p0/z, p1.b
+ lasta w0, p2, z0.b
+ lasta w1, p2, z1.b
+ sub x0, x0, x1
+ ret
+END (__memcmp_kunpeng950)
diff --git a/sysdeps/aarch64/multiarch/memcpy_kunpeng950.S b/sysdeps/aarch64/multiarch/memcpy_kunpeng950.S
index 82534f9c18..38a56303de 100644
--- a/sysdeps/aarch64/multiarch/memcpy_kunpeng950.S
+++ b/sysdeps/aarch64/multiarch/memcpy_kunpeng950.S
@@ -1,4 +1,4 @@
-/* Optimized memcpy for Huawei Kupeng 950 processor.
+/* Optimized memcpy for Huawei Kunpeng 950 processor.
Copyright (C) 2026 Free Software Foundation, Inc.
This file is part of the GNU C Library.