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glibc/SOURCES/glibc-RHEL-15696-13.patch

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From 525bc2a32c9710df40371f951217c6ae7a923aee Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 5 Mar 2021 06:36:50 -0800
Subject: [PATCH] x86-64: Add strcpy family functions with 256-bit EVEX
Content-type: text/plain; charset=UTF-8
Update ifunc-strcpy.h to select the function optimized with 256-bit EVEX
instructions using YMM16-YMM31 registers to avoid RTM abort with usable
AVX512VL and AVX512BW since VZEROUPPER isn't needed at function exit.
---
sysdeps/x86_64/multiarch/Makefile | 6 +
sysdeps/x86_64/multiarch/ifunc-impl-list.c | 24 +
sysdeps/x86_64/multiarch/ifunc-strcpy.h | 13 +-
sysdeps/x86_64/multiarch/stpcpy-evex.S | 3 +
sysdeps/x86_64/multiarch/stpncpy-evex.S | 4 +
sysdeps/x86_64/multiarch/strcat-evex.S | 283 ++++++
sysdeps/x86_64/multiarch/strcpy-evex.S | 1003 ++++++++++++++++++++
sysdeps/x86_64/multiarch/strncat-evex.S | 3 +
sysdeps/x86_64/multiarch/strncpy-evex.S | 3 +
9 files changed, 1339 insertions(+), 3 deletions(-)
create mode 100644 sysdeps/x86_64/multiarch/stpcpy-evex.S
create mode 100644 sysdeps/x86_64/multiarch/stpncpy-evex.S
create mode 100644 sysdeps/x86_64/multiarch/strcat-evex.S
create mode 100644 sysdeps/x86_64/multiarch/strcpy-evex.S
create mode 100644 sysdeps/x86_64/multiarch/strncat-evex.S
create mode 100644 sysdeps/x86_64/multiarch/strncpy-evex.S
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 5ce85882..46783cd1 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -43,11 +43,17 @@ sysdep_routines += strncat-c stpncpy-c strncpy-c \
memchr-evex \
memrchr-evex \
rawmemchr-evex \
+ stpcpy-evex \
+ stpncpy-evex \
+ strcat-evex \
strchr-evex \
strchrnul-evex \
strcmp-evex \
+ strcpy-evex \
strlen-evex \
+ strncat-evex \
strncmp-evex \
+ strncpy-evex \
strnlen-evex \
strrchr-evex
CFLAGS-varshift.c += -msse4
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index bd7d9f19..082e4da3 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -224,6 +224,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__stpncpy_ssse3)
IFUNC_IMPL_ADD (array, i, stpncpy, CPU_FEATURE_USABLE (AVX2),
__stpncpy_avx2)
+ IFUNC_IMPL_ADD (array, i, stpncpy,
+ (CPU_FEATURE_USABLE (AVX512VL)
+ && CPU_FEATURE_USABLE (AVX512BW)),
+ __stpncpy_evex)
IFUNC_IMPL_ADD (array, i, stpncpy, 1,
__stpncpy_sse2_unaligned)
IFUNC_IMPL_ADD (array, i, stpncpy, 1, __stpncpy_sse2))
@@ -234,6 +238,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__stpcpy_ssse3)
IFUNC_IMPL_ADD (array, i, stpcpy, CPU_FEATURE_USABLE (AVX2),
__stpcpy_avx2)
+ IFUNC_IMPL_ADD (array, i, stpcpy,
+ (CPU_FEATURE_USABLE (AVX512VL)
+ && CPU_FEATURE_USABLE (AVX512BW)),
+ __stpcpy_evex)
IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_sse2_unaligned)
IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_sse2))
@@ -268,6 +276,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strcat,
IFUNC_IMPL_ADD (array, i, strcat, CPU_FEATURE_USABLE (AVX2),
__strcat_avx2)
+ IFUNC_IMPL_ADD (array, i, strcat,
+ (CPU_FEATURE_USABLE (AVX512VL)
+ && CPU_FEATURE_USABLE (AVX512BW)),
+ __strcat_evex)
IFUNC_IMPL_ADD (array, i, strcat, CPU_FEATURE_USABLE (SSSE3),
__strcat_ssse3)
IFUNC_IMPL_ADD (array, i, strcat, 1, __strcat_sse2_unaligned)
@@ -330,6 +342,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strcpy,
IFUNC_IMPL_ADD (array, i, strcpy, CPU_FEATURE_USABLE (AVX2),
__strcpy_avx2)
+ IFUNC_IMPL_ADD (array, i, strcpy,
+ (CPU_FEATURE_USABLE (AVX512VL)
+ && CPU_FEATURE_USABLE (AVX512BW)),
+ __strcpy_evex)
IFUNC_IMPL_ADD (array, i, strcpy, CPU_FEATURE_USABLE (SSSE3),
__strcpy_ssse3)
IFUNC_IMPL_ADD (array, i, strcpy, 1, __strcpy_sse2_unaligned)
@@ -373,6 +389,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncat,
IFUNC_IMPL_ADD (array, i, strncat, CPU_FEATURE_USABLE (AVX2),
__strncat_avx2)
+ IFUNC_IMPL_ADD (array, i, strncat,
+ (CPU_FEATURE_USABLE (AVX512VL)
+ && CPU_FEATURE_USABLE (AVX512BW)),
+ __strncat_evex)
IFUNC_IMPL_ADD (array, i, strncat, CPU_FEATURE_USABLE (SSSE3),
__strncat_ssse3)
IFUNC_IMPL_ADD (array, i, strncat, 1,
@@ -383,6 +403,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncpy,
IFUNC_IMPL_ADD (array, i, strncpy, CPU_FEATURE_USABLE (AVX2),
__strncpy_avx2)
+ IFUNC_IMPL_ADD (array, i, strncpy,
+ (CPU_FEATURE_USABLE (AVX512VL)
+ && CPU_FEATURE_USABLE (AVX512BW)),
+ __strncpy_evex)
IFUNC_IMPL_ADD (array, i, strncpy, CPU_FEATURE_USABLE (SSSE3),
__strncpy_ssse3)
IFUNC_IMPL_ADD (array, i, strncpy, 1,
diff --git a/sysdeps/x86_64/multiarch/ifunc-strcpy.h b/sysdeps/x86_64/multiarch/ifunc-strcpy.h
index 100dca5c..deae6348 100644
--- a/sysdeps/x86_64/multiarch/ifunc-strcpy.h
+++ b/sysdeps/x86_64/multiarch/ifunc-strcpy.h
@@ -25,16 +25,23 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned)
attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden;
+extern __typeof (REDIRECT_NAME) OPTIMIZE (evex) attribute_hidden;
static inline void *
IFUNC_SELECTOR (void)
{
const struct cpu_features* cpu_features = __get_cpu_features ();
- if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)
- && CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
- return OPTIMIZE (avx2);
+ {
+ if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW))
+ return OPTIMIZE (evex);
+
+ if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER))
+ return OPTIMIZE (avx2);
+ }
if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Unaligned_Load))
return OPTIMIZE (sse2_unaligned);
diff --git a/sysdeps/x86_64/multiarch/stpcpy-evex.S b/sysdeps/x86_64/multiarch/stpcpy-evex.S
new file mode 100644
index 00000000..7c6f26cd
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/stpcpy-evex.S
@@ -0,0 +1,3 @@
+#define USE_AS_STPCPY
+#define STRCPY __stpcpy_evex
+#include "strcpy-evex.S"
diff --git a/sysdeps/x86_64/multiarch/stpncpy-evex.S b/sysdeps/x86_64/multiarch/stpncpy-evex.S
new file mode 100644
index 00000000..1570014d
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/stpncpy-evex.S
@@ -0,0 +1,4 @@
+#define USE_AS_STPCPY
+#define USE_AS_STRNCPY
+#define STRCPY __stpncpy_evex
+#include "strcpy-evex.S"
diff --git a/sysdeps/x86_64/multiarch/strcat-evex.S b/sysdeps/x86_64/multiarch/strcat-evex.S
new file mode 100644
index 00000000..97c3d85b
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/strcat-evex.S
@@ -0,0 +1,283 @@
+/* strcat with 256-bit EVEX instructions.
+ Copyright (C) 2021 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
+ <https://www.gnu.org/licenses/>. */
+
+#if IS_IN (libc)
+
+# include <sysdep.h>
+
+# ifndef STRCAT
+# define STRCAT __strcat_evex
+# endif
+
+# define VMOVU vmovdqu64
+# define VMOVA vmovdqa64
+
+/* zero register */
+# define XMMZERO xmm16
+# define YMMZERO ymm16
+# define YMM0 ymm17
+# define YMM1 ymm18
+
+# define USE_AS_STRCAT
+
+/* Number of bytes in a vector register */
+# define VEC_SIZE 32
+
+ .section .text.evex,"ax",@progbits
+ENTRY (STRCAT)
+ mov %rdi, %r9
+# ifdef USE_AS_STRNCAT
+ mov %rdx, %r8
+# endif
+
+ xor %eax, %eax
+ mov %edi, %ecx
+ and $((VEC_SIZE * 4) - 1), %ecx
+ vpxorq %XMMZERO, %XMMZERO, %XMMZERO
+ cmp $(VEC_SIZE * 3), %ecx
+ ja L(fourth_vector_boundary)
+ vpcmpb $0, (%rdi), %YMMZERO, %k0
+ kmovd %k0, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_first_vector)
+ mov %rdi, %rax
+ and $-VEC_SIZE, %rax
+ jmp L(align_vec_size_start)
+L(fourth_vector_boundary):
+ mov %rdi, %rax
+ and $-VEC_SIZE, %rax
+ vpcmpb $0, (%rax), %YMMZERO, %k0
+ mov $-1, %r10d
+ sub %rax, %rcx
+ shl %cl, %r10d
+ kmovd %k0, %edx
+ and %r10d, %edx
+ jnz L(exit)
+
+L(align_vec_size_start):
+ vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0
+ kmovd %k0, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_second_vector)
+
+ vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_third_vector)
+
+ vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2
+ kmovd %k2, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fourth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3
+ kmovd %k3, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fifth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4
+ add $(VEC_SIZE * 4), %rax
+ kmovd %k4, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_second_vector)
+
+ vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_third_vector)
+
+ vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2
+ kmovd %k2, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fourth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3
+ kmovd %k3, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fifth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4
+ kmovd %k4, %edx
+ add $(VEC_SIZE * 4), %rax
+ test %edx, %edx
+ jnz L(exit_null_on_second_vector)
+
+ vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_third_vector)
+
+ vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2
+ kmovd %k2, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fourth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3
+ kmovd %k3, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fifth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4
+ add $(VEC_SIZE * 4), %rax
+ kmovd %k4, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_second_vector)
+
+ vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_third_vector)
+
+ vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2
+ kmovd %k2, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fourth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3
+ kmovd %k3, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fifth_vector)
+
+ test $((VEC_SIZE * 4) - 1), %rax
+ jz L(align_four_vec_loop)
+
+ vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4
+ add $(VEC_SIZE * 5), %rax
+ kmovd %k4, %edx
+ test %edx, %edx
+ jnz L(exit)
+
+ test $((VEC_SIZE * 4) - 1), %rax
+ jz L(align_four_vec_loop)
+
+ vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0
+ add $VEC_SIZE, %rax
+ kmovd %k0, %edx
+ test %edx, %edx
+ jnz L(exit)
+
+ test $((VEC_SIZE * 4) - 1), %rax
+ jz L(align_four_vec_loop)
+
+ vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0
+ add $VEC_SIZE, %rax
+ kmovd %k0, %edx
+ test %edx, %edx
+ jnz L(exit)
+
+ test $((VEC_SIZE * 4) - 1), %rax
+ jz L(align_four_vec_loop)
+
+ vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k1
+ add $VEC_SIZE, %rax
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(exit)
+
+ add $VEC_SIZE, %rax
+
+ .p2align 4
+L(align_four_vec_loop):
+ VMOVA (%rax), %YMM0
+ VMOVA (VEC_SIZE * 2)(%rax), %YMM1
+ vpminub VEC_SIZE(%rax), %YMM0, %YMM0
+ vpminub (VEC_SIZE * 3)(%rax), %YMM1, %YMM1
+ vpminub %YMM0, %YMM1, %YMM0
+ /* If K0 != 0, there is a null byte. */
+ vpcmpb $0, %YMM0, %YMMZERO, %k0
+ add $(VEC_SIZE * 4), %rax
+ ktestd %k0, %k0
+ jz L(align_four_vec_loop)
+
+ vpcmpb $0, -(VEC_SIZE * 4)(%rax), %YMMZERO, %k0
+ sub $(VEC_SIZE * 5), %rax
+ kmovd %k0, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_second_vector)
+
+ vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_third_vector)
+
+ vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2
+ kmovd %k2, %edx
+ test %edx, %edx
+ jnz L(exit_null_on_fourth_vector)
+
+ vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3
+ kmovd %k3, %edx
+ sub %rdi, %rax
+ bsf %rdx, %rdx
+ add %rdx, %rax
+ add $(VEC_SIZE * 4), %rax
+ jmp L(StartStrcpyPart)
+
+ .p2align 4
+L(exit):
+ sub %rdi, %rax
+L(exit_null_on_first_vector):
+ bsf %rdx, %rdx
+ add %rdx, %rax
+ jmp L(StartStrcpyPart)
+
+ .p2align 4
+L(exit_null_on_second_vector):
+ sub %rdi, %rax
+ bsf %rdx, %rdx
+ add %rdx, %rax
+ add $VEC_SIZE, %rax
+ jmp L(StartStrcpyPart)
+
+ .p2align 4
+L(exit_null_on_third_vector):
+ sub %rdi, %rax
+ bsf %rdx, %rdx
+ add %rdx, %rax
+ add $(VEC_SIZE * 2), %rax
+ jmp L(StartStrcpyPart)
+
+ .p2align 4
+L(exit_null_on_fourth_vector):
+ sub %rdi, %rax
+ bsf %rdx, %rdx
+ add %rdx, %rax
+ add $(VEC_SIZE * 3), %rax
+ jmp L(StartStrcpyPart)
+
+ .p2align 4
+L(exit_null_on_fifth_vector):
+ sub %rdi, %rax
+ bsf %rdx, %rdx
+ add %rdx, %rax
+ add $(VEC_SIZE * 4), %rax
+
+ .p2align 4
+L(StartStrcpyPart):
+ lea (%r9, %rax), %rdi
+ mov %rsi, %rcx
+ mov %r9, %rax /* save result */
+
+# ifdef USE_AS_STRNCAT
+ test %r8, %r8
+ jz L(ExitZero)
+# define USE_AS_STRNCPY
+# endif
+
+# include "strcpy-evex.S"
+#endif
diff --git a/sysdeps/x86_64/multiarch/strcpy-evex.S b/sysdeps/x86_64/multiarch/strcpy-evex.S
new file mode 100644
index 00000000..a343a1a6
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/strcpy-evex.S
@@ -0,0 +1,1003 @@
+/* strcpy with 256-bit EVEX instructions.
+ Copyright (C) 2021 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
+ <https://www.gnu.org/licenses/>. */
+
+#if IS_IN (libc)
+
+# ifndef USE_AS_STRCAT
+# include <sysdep.h>
+
+# ifndef STRCPY
+# define STRCPY __strcpy_evex
+# endif
+
+# endif
+
+# define VMOVU vmovdqu64
+# define VMOVA vmovdqa64
+
+/* Number of bytes in a vector register */
+# ifndef VEC_SIZE
+# define VEC_SIZE 32
+# endif
+
+# define XMM2 xmm18
+# define XMM3 xmm19
+
+# define YMM2 ymm18
+# define YMM3 ymm19
+# define YMM4 ymm20
+# define YMM5 ymm21
+# define YMM6 ymm22
+# define YMM7 ymm23
+
+# ifndef USE_AS_STRCAT
+
+/* zero register */
+# define XMMZERO xmm16
+# define YMMZERO ymm16
+# define YMM1 ymm17
+
+ .section .text.evex,"ax",@progbits
+ENTRY (STRCPY)
+# ifdef USE_AS_STRNCPY
+ mov %RDX_LP, %R8_LP
+ test %R8_LP, %R8_LP
+ jz L(ExitZero)
+# endif
+ mov %rsi, %rcx
+# ifndef USE_AS_STPCPY
+ mov %rdi, %rax /* save result */
+# endif
+
+ vpxorq %XMMZERO, %XMMZERO, %XMMZERO
+# endif
+
+ and $((VEC_SIZE * 4) - 1), %ecx
+ cmp $(VEC_SIZE * 2), %ecx
+ jbe L(SourceStringAlignmentLessTwoVecSize)
+
+ and $-VEC_SIZE, %rsi
+ and $(VEC_SIZE - 1), %ecx
+
+ vpcmpb $0, (%rsi), %YMMZERO, %k0
+ kmovd %k0, %edx
+ shr %cl, %rdx
+
+# ifdef USE_AS_STRNCPY
+# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
+ mov $VEC_SIZE, %r10
+ sub %rcx, %r10
+ cmp %r10, %r8
+# else
+ mov $(VEC_SIZE + 1), %r10
+ sub %rcx, %r10
+ cmp %r10, %r8
+# endif
+ jbe L(CopyVecSizeTailCase2OrCase3)
+# endif
+ test %edx, %edx
+ jnz L(CopyVecSizeTail)
+
+ vpcmpb $0, VEC_SIZE(%rsi), %YMMZERO, %k1
+ kmovd %k1, %edx
+
+# ifdef USE_AS_STRNCPY
+ add $VEC_SIZE, %r10
+ cmp %r10, %r8
+ jbe L(CopyTwoVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+ jnz L(CopyTwoVecSize)
+
+ VMOVU (%rsi, %rcx), %YMM2 /* copy VEC_SIZE bytes */
+ VMOVU %YMM2, (%rdi)
+
+/* If source address alignment != destination address alignment */
+ .p2align 4
+L(UnalignVecSizeBoth):
+ sub %rcx, %rdi
+# ifdef USE_AS_STRNCPY
+ add %rcx, %r8
+ sbb %rcx, %rcx
+ or %rcx, %r8
+# endif
+ mov $VEC_SIZE, %rcx
+ VMOVA (%rsi, %rcx), %YMM2
+ VMOVU %YMM2, (%rdi, %rcx)
+ VMOVA VEC_SIZE(%rsi, %rcx), %YMM2
+ vpcmpb $0, %YMM2, %YMMZERO, %k0
+ kmovd %k0, %edx
+ add $VEC_SIZE, %rcx
+# ifdef USE_AS_STRNCPY
+ sub $(VEC_SIZE * 3), %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec2)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ VMOVU %YMM2, (%rdi, %rcx)
+ VMOVA VEC_SIZE(%rsi, %rcx), %YMM3
+ vpcmpb $0, %YMM3, %YMMZERO, %k0
+ kmovd %k0, %edx
+ add $VEC_SIZE, %rcx
+# ifdef USE_AS_STRNCPY
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec3)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ VMOVU %YMM3, (%rdi, %rcx)
+ VMOVA VEC_SIZE(%rsi, %rcx), %YMM4
+ vpcmpb $0, %YMM4, %YMMZERO, %k0
+ kmovd %k0, %edx
+ add $VEC_SIZE, %rcx
+# ifdef USE_AS_STRNCPY
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec4)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ VMOVU %YMM4, (%rdi, %rcx)
+ VMOVA VEC_SIZE(%rsi, %rcx), %YMM2
+ vpcmpb $0, %YMM2, %YMMZERO, %k0
+ kmovd %k0, %edx
+ add $VEC_SIZE, %rcx
+# ifdef USE_AS_STRNCPY
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec2)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ VMOVU %YMM2, (%rdi, %rcx)
+ VMOVA VEC_SIZE(%rsi, %rcx), %YMM2
+ vpcmpb $0, %YMM2, %YMMZERO, %k0
+ kmovd %k0, %edx
+ add $VEC_SIZE, %rcx
+# ifdef USE_AS_STRNCPY
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec2)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ VMOVA VEC_SIZE(%rsi, %rcx), %YMM3
+ VMOVU %YMM2, (%rdi, %rcx)
+ vpcmpb $0, %YMM3, %YMMZERO, %k0
+ kmovd %k0, %edx
+ add $VEC_SIZE, %rcx
+# ifdef USE_AS_STRNCPY
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+# endif
+ test %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec3)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ VMOVU %YMM3, (%rdi, %rcx)
+ mov %rsi, %rdx
+ lea VEC_SIZE(%rsi, %rcx), %rsi
+ and $-(VEC_SIZE * 4), %rsi
+ sub %rsi, %rdx
+ sub %rdx, %rdi
+# ifdef USE_AS_STRNCPY
+ lea (VEC_SIZE * 8)(%r8, %rdx), %r8
+# endif
+L(UnalignedFourVecSizeLoop):
+ VMOVA (%rsi), %YMM4
+ VMOVA VEC_SIZE(%rsi), %YMM5
+ VMOVA (VEC_SIZE * 2)(%rsi), %YMM6
+ VMOVA (VEC_SIZE * 3)(%rsi), %YMM7
+ vpminub %YMM5, %YMM4, %YMM2
+ vpminub %YMM7, %YMM6, %YMM3
+ vpminub %YMM2, %YMM3, %YMM2
+ /* If K7 != 0, there is a null byte. */
+ vpcmpb $0, %YMM2, %YMMZERO, %k7
+ kmovd %k7, %edx
+# ifdef USE_AS_STRNCPY
+ sub $(VEC_SIZE * 4), %r8
+ jbe L(UnalignedLeaveCase2OrCase3)
+# endif
+ test %edx, %edx
+ jnz L(UnalignedFourVecSizeLeave)
+
+L(UnalignedFourVecSizeLoop_start):
+ add $(VEC_SIZE * 4), %rdi
+ add $(VEC_SIZE * 4), %rsi
+ VMOVU %YMM4, -(VEC_SIZE * 4)(%rdi)
+ VMOVA (%rsi), %YMM4
+ VMOVU %YMM5, -(VEC_SIZE * 3)(%rdi)
+ VMOVA VEC_SIZE(%rsi), %YMM5
+ vpminub %YMM5, %YMM4, %YMM2
+ VMOVU %YMM6, -(VEC_SIZE * 2)(%rdi)
+ VMOVA (VEC_SIZE * 2)(%rsi), %YMM6
+ VMOVU %YMM7, -VEC_SIZE(%rdi)
+ VMOVA (VEC_SIZE * 3)(%rsi), %YMM7
+ vpminub %YMM7, %YMM6, %YMM3
+ vpminub %YMM2, %YMM3, %YMM2
+ /* If K7 != 0, there is a null byte. */
+ vpcmpb $0, %YMM2, %YMMZERO, %k7
+ kmovd %k7, %edx
+# ifdef USE_AS_STRNCPY
+ sub $(VEC_SIZE * 4), %r8
+ jbe L(UnalignedLeaveCase2OrCase3)
+# endif
+ test %edx, %edx
+ jz L(UnalignedFourVecSizeLoop_start)
+
+L(UnalignedFourVecSizeLeave):
+ vpcmpb $0, %YMM4, %YMMZERO, %k1
+ kmovd %k1, %edx
+ test %edx, %edx
+ jnz L(CopyVecSizeUnaligned_0)
+
+ vpcmpb $0, %YMM5, %YMMZERO, %k2
+ kmovd %k2, %ecx
+ test %ecx, %ecx
+ jnz L(CopyVecSizeUnaligned_16)
+
+ vpcmpb $0, %YMM6, %YMMZERO, %k3
+ kmovd %k3, %edx
+ test %edx, %edx
+ jnz L(CopyVecSizeUnaligned_32)
+
+ vpcmpb $0, %YMM7, %YMMZERO, %k4
+ kmovd %k4, %ecx
+ bsf %ecx, %edx
+ VMOVU %YMM4, (%rdi)
+ VMOVU %YMM5, VEC_SIZE(%rdi)
+ VMOVU %YMM6, (VEC_SIZE * 2)(%rdi)
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+# ifdef USE_AS_STPCPY
+ lea (VEC_SIZE * 3)(%rdi, %rdx), %rax
+# endif
+ VMOVU %YMM7, (VEC_SIZE * 3)(%rdi)
+ add $(VEC_SIZE - 1), %r8
+ sub %rdx, %r8
+ lea ((VEC_SIZE * 3) + 1)(%rdi, %rdx), %rdi
+ jmp L(StrncpyFillTailWithZero)
+# else
+ add $(VEC_SIZE * 3), %rsi
+ add $(VEC_SIZE * 3), %rdi
+ jmp L(CopyVecSizeExit)
+# endif
+
+/* If source address alignment == destination address alignment */
+
+L(SourceStringAlignmentLessTwoVecSize):
+ VMOVU (%rsi), %YMM3
+ VMOVU VEC_SIZE(%rsi), %YMM2
+ vpcmpb $0, %YMM3, %YMMZERO, %k0
+ kmovd %k0, %edx
+
+# ifdef USE_AS_STRNCPY
+# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
+ cmp $VEC_SIZE, %r8
+# else
+ cmp $(VEC_SIZE + 1), %r8
+# endif
+ jbe L(CopyVecSizeTail1Case2OrCase3)
+# endif
+ test %edx, %edx
+ jnz L(CopyVecSizeTail1)
+
+ VMOVU %YMM3, (%rdi)
+ vpcmpb $0, %YMM2, %YMMZERO, %k0
+ kmovd %k0, %edx
+
+# ifdef USE_AS_STRNCPY
+# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
+ cmp $(VEC_SIZE * 2), %r8
+# else
+ cmp $((VEC_SIZE * 2) + 1), %r8
+# endif
+ jbe L(CopyTwoVecSize1Case2OrCase3)
+# endif
+ test %edx, %edx
+ jnz L(CopyTwoVecSize1)
+
+ and $-VEC_SIZE, %rsi
+ and $(VEC_SIZE - 1), %ecx
+ jmp L(UnalignVecSizeBoth)
+
+/*------End of main part with loops---------------------*/
+
+/* Case1 */
+
+# if (!defined USE_AS_STRNCPY) || (defined USE_AS_STRCAT)
+ .p2align 4
+L(CopyVecSize):
+ add %rcx, %rdi
+# endif
+L(CopyVecSizeTail):
+ add %rcx, %rsi
+L(CopyVecSizeTail1):
+ bsf %edx, %edx
+L(CopyVecSizeExit):
+ cmp $32, %edx
+ jae L(Exit32_63)
+ cmp $16, %edx
+ jae L(Exit16_31)
+ cmp $8, %edx
+ jae L(Exit8_15)
+ cmp $4, %edx
+ jae L(Exit4_7)
+ cmp $3, %edx
+ je L(Exit3)
+ cmp $1, %edx
+ ja L(Exit2)
+ je L(Exit1)
+ movb $0, (%rdi)
+# ifdef USE_AS_STPCPY
+ lea (%rdi), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub $1, %r8
+ lea 1(%rdi), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(CopyTwoVecSize1):
+ add $VEC_SIZE, %rsi
+ add $VEC_SIZE, %rdi
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub $VEC_SIZE, %r8
+# endif
+ jmp L(CopyVecSizeTail1)
+
+ .p2align 4
+L(CopyTwoVecSize):
+ bsf %edx, %edx
+ add %rcx, %rsi
+ add $VEC_SIZE, %edx
+ sub %ecx, %edx
+ jmp L(CopyVecSizeExit)
+
+ .p2align 4
+L(CopyVecSizeUnaligned_0):
+ bsf %edx, %edx
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+# endif
+ VMOVU %YMM4, (%rdi)
+ add $((VEC_SIZE * 4) - 1), %r8
+ sub %rdx, %r8
+ lea 1(%rdi, %rdx), %rdi
+ jmp L(StrncpyFillTailWithZero)
+# else
+ jmp L(CopyVecSizeExit)
+# endif
+
+ .p2align 4
+L(CopyVecSizeUnaligned_16):
+ bsf %ecx, %edx
+ VMOVU %YMM4, (%rdi)
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+# ifdef USE_AS_STPCPY
+ lea VEC_SIZE(%rdi, %rdx), %rax
+# endif
+ VMOVU %YMM5, VEC_SIZE(%rdi)
+ add $((VEC_SIZE * 3) - 1), %r8
+ sub %rdx, %r8
+ lea (VEC_SIZE + 1)(%rdi, %rdx), %rdi
+ jmp L(StrncpyFillTailWithZero)
+# else
+ add $VEC_SIZE, %rsi
+ add $VEC_SIZE, %rdi
+ jmp L(CopyVecSizeExit)
+# endif
+
+ .p2align 4
+L(CopyVecSizeUnaligned_32):
+ bsf %edx, %edx
+ VMOVU %YMM4, (%rdi)
+ VMOVU %YMM5, VEC_SIZE(%rdi)
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+# ifdef USE_AS_STPCPY
+ lea (VEC_SIZE * 2)(%rdi, %rdx), %rax
+# endif
+ VMOVU %YMM6, (VEC_SIZE * 2)(%rdi)
+ add $((VEC_SIZE * 2) - 1), %r8
+ sub %rdx, %r8
+ lea ((VEC_SIZE * 2) + 1)(%rdi, %rdx), %rdi
+ jmp L(StrncpyFillTailWithZero)
+# else
+ add $(VEC_SIZE * 2), %rsi
+ add $(VEC_SIZE * 2), %rdi
+ jmp L(CopyVecSizeExit)
+# endif
+
+# ifdef USE_AS_STRNCPY
+# ifndef USE_AS_STRCAT
+ .p2align 4
+L(CopyVecSizeUnalignedVec6):
+ VMOVU %YMM6, (%rdi, %rcx)
+ jmp L(CopyVecSizeVecExit)
+
+ .p2align 4
+L(CopyVecSizeUnalignedVec5):
+ VMOVU %YMM5, (%rdi, %rcx)
+ jmp L(CopyVecSizeVecExit)
+
+ .p2align 4
+L(CopyVecSizeUnalignedVec4):
+ VMOVU %YMM4, (%rdi, %rcx)
+ jmp L(CopyVecSizeVecExit)
+
+ .p2align 4
+L(CopyVecSizeUnalignedVec3):
+ VMOVU %YMM3, (%rdi, %rcx)
+ jmp L(CopyVecSizeVecExit)
+# endif
+
+/* Case2 */
+
+ .p2align 4
+L(CopyVecSizeCase2):
+ add $VEC_SIZE, %r8
+ add %rcx, %rdi
+ add %rcx, %rsi
+ bsf %edx, %edx
+ cmp %r8d, %edx
+ jb L(CopyVecSizeExit)
+ jmp L(StrncpyExit)
+
+ .p2align 4
+L(CopyTwoVecSizeCase2):
+ add %rcx, %rsi
+ bsf %edx, %edx
+ add $VEC_SIZE, %edx
+ sub %ecx, %edx
+ cmp %r8d, %edx
+ jb L(CopyVecSizeExit)
+ jmp L(StrncpyExit)
+
+L(CopyVecSizeTailCase2):
+ add %rcx, %rsi
+ bsf %edx, %edx
+ cmp %r8d, %edx
+ jb L(CopyVecSizeExit)
+ jmp L(StrncpyExit)
+
+L(CopyVecSizeTail1Case2):
+ bsf %edx, %edx
+ cmp %r8d, %edx
+ jb L(CopyVecSizeExit)
+ jmp L(StrncpyExit)
+
+/* Case2 or Case3, Case3 */
+
+ .p2align 4
+L(CopyVecSizeCase2OrCase3):
+ test %rdx, %rdx
+ jnz L(CopyVecSizeCase2)
+L(CopyVecSizeCase3):
+ add $VEC_SIZE, %r8
+ add %rcx, %rdi
+ add %rcx, %rsi
+ jmp L(StrncpyExit)
+
+ .p2align 4
+L(CopyTwoVecSizeCase2OrCase3):
+ test %rdx, %rdx
+ jnz L(CopyTwoVecSizeCase2)
+ add %rcx, %rsi
+ jmp L(StrncpyExit)
+
+ .p2align 4
+L(CopyVecSizeTailCase2OrCase3):
+ test %rdx, %rdx
+ jnz L(CopyVecSizeTailCase2)
+ add %rcx, %rsi
+ jmp L(StrncpyExit)
+
+ .p2align 4
+L(CopyTwoVecSize1Case2OrCase3):
+ add $VEC_SIZE, %rdi
+ add $VEC_SIZE, %rsi
+ sub $VEC_SIZE, %r8
+L(CopyVecSizeTail1Case2OrCase3):
+ test %rdx, %rdx
+ jnz L(CopyVecSizeTail1Case2)
+ jmp L(StrncpyExit)
+# endif
+
+/*------------End labels regarding with copying 1-VEC_SIZE bytes--and 1-(VEC_SIZE*2) bytes----*/
+
+ .p2align 4
+L(Exit1):
+ movzwl (%rsi), %edx
+ mov %dx, (%rdi)
+# ifdef USE_AS_STPCPY
+ lea 1(%rdi), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub $2, %r8
+ lea 2(%rdi), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(Exit2):
+ movzwl (%rsi), %ecx
+ mov %cx, (%rdi)
+ movb $0, 2(%rdi)
+# ifdef USE_AS_STPCPY
+ lea 2(%rdi), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub $3, %r8
+ lea 3(%rdi), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(Exit3):
+ mov (%rsi), %edx
+ mov %edx, (%rdi)
+# ifdef USE_AS_STPCPY
+ lea 3(%rdi), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub $4, %r8
+ lea 4(%rdi), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(Exit4_7):
+ mov (%rsi), %ecx
+ mov %ecx, (%rdi)
+ mov -3(%rsi, %rdx), %ecx
+ mov %ecx, -3(%rdi, %rdx)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub %rdx, %r8
+ sub $1, %r8
+ lea 1(%rdi, %rdx), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(Exit8_15):
+ mov (%rsi), %rcx
+ mov -7(%rsi, %rdx), %r9
+ mov %rcx, (%rdi)
+ mov %r9, -7(%rdi, %rdx)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub %rdx, %r8
+ sub $1, %r8
+ lea 1(%rdi, %rdx), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(Exit16_31):
+ VMOVU (%rsi), %XMM2
+ VMOVU -15(%rsi, %rdx), %XMM3
+ VMOVU %XMM2, (%rdi)
+ VMOVU %XMM3, -15(%rdi, %rdx)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub %rdx, %r8
+ sub $1, %r8
+ lea 1(%rdi, %rdx), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+ .p2align 4
+L(Exit32_63):
+ VMOVU (%rsi), %YMM2
+ VMOVU -31(%rsi, %rdx), %YMM3
+ VMOVU %YMM2, (%rdi)
+ VMOVU %YMM3, -31(%rdi, %rdx)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+# endif
+# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
+ sub %rdx, %r8
+ sub $1, %r8
+ lea 1(%rdi, %rdx), %rdi
+ jnz L(StrncpyFillTailWithZero)
+# endif
+ ret
+
+# ifdef USE_AS_STRNCPY
+
+ .p2align 4
+L(StrncpyExit1):
+ movzbl (%rsi), %edx
+ mov %dl, (%rdi)
+# ifdef USE_AS_STPCPY
+ lea 1(%rdi), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, 1(%rdi)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit2):
+ movzwl (%rsi), %edx
+ mov %dx, (%rdi)
+# ifdef USE_AS_STPCPY
+ lea 2(%rdi), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, 2(%rdi)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit3_4):
+ movzwl (%rsi), %ecx
+ movzwl -2(%rsi, %r8), %edx
+ mov %cx, (%rdi)
+ mov %dx, -2(%rdi, %r8)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %r8), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (%rdi, %r8)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit5_8):
+ mov (%rsi), %ecx
+ mov -4(%rsi, %r8), %edx
+ mov %ecx, (%rdi)
+ mov %edx, -4(%rdi, %r8)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %r8), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (%rdi, %r8)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit9_16):
+ mov (%rsi), %rcx
+ mov -8(%rsi, %r8), %rdx
+ mov %rcx, (%rdi)
+ mov %rdx, -8(%rdi, %r8)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %r8), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (%rdi, %r8)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit17_32):
+ VMOVU (%rsi), %XMM2
+ VMOVU -16(%rsi, %r8), %XMM3
+ VMOVU %XMM2, (%rdi)
+ VMOVU %XMM3, -16(%rdi, %r8)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %r8), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (%rdi, %r8)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit33_64):
+ /* 0/32, 31/16 */
+ VMOVU (%rsi), %YMM2
+ VMOVU -VEC_SIZE(%rsi, %r8), %YMM3
+ VMOVU %YMM2, (%rdi)
+ VMOVU %YMM3, -VEC_SIZE(%rdi, %r8)
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %r8), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (%rdi, %r8)
+# endif
+ ret
+
+ .p2align 4
+L(StrncpyExit65):
+ /* 0/32, 32/32, 64/1 */
+ VMOVU (%rsi), %YMM2
+ VMOVU 32(%rsi), %YMM3
+ mov 64(%rsi), %cl
+ VMOVU %YMM2, (%rdi)
+ VMOVU %YMM3, 32(%rdi)
+ mov %cl, 64(%rdi)
+# ifdef USE_AS_STPCPY
+ lea 65(%rdi), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, 65(%rdi)
+# endif
+ ret
+
+# ifndef USE_AS_STRCAT
+
+ .p2align 4
+L(Fill1):
+ mov %dl, (%rdi)
+ ret
+
+ .p2align 4
+L(Fill2):
+ mov %dx, (%rdi)
+ ret
+
+ .p2align 4
+L(Fill3_4):
+ mov %dx, (%rdi)
+ mov %dx, -2(%rdi, %r8)
+ ret
+
+ .p2align 4
+L(Fill5_8):
+ mov %edx, (%rdi)
+ mov %edx, -4(%rdi, %r8)
+ ret
+
+ .p2align 4
+L(Fill9_16):
+ mov %rdx, (%rdi)
+ mov %rdx, -8(%rdi, %r8)
+ ret
+
+ .p2align 4
+L(Fill17_32):
+ VMOVU %XMMZERO, (%rdi)
+ VMOVU %XMMZERO, -16(%rdi, %r8)
+ ret
+
+ .p2align 4
+L(CopyVecSizeUnalignedVec2):
+ VMOVU %YMM2, (%rdi, %rcx)
+
+ .p2align 4
+L(CopyVecSizeVecExit):
+ bsf %edx, %edx
+ add $(VEC_SIZE - 1), %r8
+ add %rcx, %rdi
+# ifdef USE_AS_STPCPY
+ lea (%rdi, %rdx), %rax
+# endif
+ sub %rdx, %r8
+ lea 1(%rdi, %rdx), %rdi
+
+ .p2align 4
+L(StrncpyFillTailWithZero):
+ xor %edx, %edx
+ sub $VEC_SIZE, %r8
+ jbe L(StrncpyFillExit)
+
+ VMOVU %YMMZERO, (%rdi)
+ add $VEC_SIZE, %rdi
+
+ mov %rdi, %rsi
+ and $(VEC_SIZE - 1), %esi
+ sub %rsi, %rdi
+ add %rsi, %r8
+ sub $(VEC_SIZE * 4), %r8
+ jb L(StrncpyFillLessFourVecSize)
+
+L(StrncpyFillLoopVmovdqa):
+ VMOVA %YMMZERO, (%rdi)
+ VMOVA %YMMZERO, VEC_SIZE(%rdi)
+ VMOVA %YMMZERO, (VEC_SIZE * 2)(%rdi)
+ VMOVA %YMMZERO, (VEC_SIZE * 3)(%rdi)
+ add $(VEC_SIZE * 4), %rdi
+ sub $(VEC_SIZE * 4), %r8
+ jae L(StrncpyFillLoopVmovdqa)
+
+L(StrncpyFillLessFourVecSize):
+ add $(VEC_SIZE * 2), %r8
+ jl L(StrncpyFillLessTwoVecSize)
+ VMOVA %YMMZERO, (%rdi)
+ VMOVA %YMMZERO, VEC_SIZE(%rdi)
+ add $(VEC_SIZE * 2), %rdi
+ sub $VEC_SIZE, %r8
+ jl L(StrncpyFillExit)
+ VMOVA %YMMZERO, (%rdi)
+ add $VEC_SIZE, %rdi
+ jmp L(Fill)
+
+ .p2align 4
+L(StrncpyFillLessTwoVecSize):
+ add $VEC_SIZE, %r8
+ jl L(StrncpyFillExit)
+ VMOVA %YMMZERO, (%rdi)
+ add $VEC_SIZE, %rdi
+ jmp L(Fill)
+
+ .p2align 4
+L(StrncpyFillExit):
+ add $VEC_SIZE, %r8
+L(Fill):
+ cmp $17, %r8d
+ jae L(Fill17_32)
+ cmp $9, %r8d
+ jae L(Fill9_16)
+ cmp $5, %r8d
+ jae L(Fill5_8)
+ cmp $3, %r8d
+ jae L(Fill3_4)
+ cmp $1, %r8d
+ ja L(Fill2)
+ je L(Fill1)
+ ret
+
+/* end of ifndef USE_AS_STRCAT */
+# endif
+
+ .p2align 4
+L(UnalignedLeaveCase2OrCase3):
+ test %rdx, %rdx
+ jnz L(UnalignedFourVecSizeLeaveCase2)
+L(UnalignedFourVecSizeLeaveCase3):
+ lea (VEC_SIZE * 4)(%r8), %rcx
+ and $-VEC_SIZE, %rcx
+ add $(VEC_SIZE * 3), %r8
+ jl L(CopyVecSizeCase3)
+ VMOVU %YMM4, (%rdi)
+ sub $VEC_SIZE, %r8
+ jb L(CopyVecSizeCase3)
+ VMOVU %YMM5, VEC_SIZE(%rdi)
+ sub $VEC_SIZE, %r8
+ jb L(CopyVecSizeCase3)
+ VMOVU %YMM6, (VEC_SIZE * 2)(%rdi)
+ sub $VEC_SIZE, %r8
+ jb L(CopyVecSizeCase3)
+ VMOVU %YMM7, (VEC_SIZE * 3)(%rdi)
+# ifdef USE_AS_STPCPY
+ lea (VEC_SIZE * 4)(%rdi), %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (VEC_SIZE * 4)(%rdi)
+# endif
+ ret
+
+ .p2align 4
+L(UnalignedFourVecSizeLeaveCase2):
+ xor %ecx, %ecx
+ vpcmpb $0, %YMM4, %YMMZERO, %k1
+ kmovd %k1, %edx
+ add $(VEC_SIZE * 3), %r8
+ jle L(CopyVecSizeCase2OrCase3)
+ test %edx, %edx
+# ifndef USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec4)
+# else
+ jnz L(CopyVecSize)
+# endif
+ vpcmpb $0, %YMM5, %YMMZERO, %k2
+ kmovd %k2, %edx
+ VMOVU %YMM4, (%rdi)
+ add $VEC_SIZE, %rcx
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+ test %edx, %edx
+# ifndef USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec5)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ vpcmpb $0, %YMM6, %YMMZERO, %k3
+ kmovd %k3, %edx
+ VMOVU %YMM5, VEC_SIZE(%rdi)
+ add $VEC_SIZE, %rcx
+ sub $VEC_SIZE, %r8
+ jbe L(CopyVecSizeCase2OrCase3)
+ test %edx, %edx
+# ifndef USE_AS_STRCAT
+ jnz L(CopyVecSizeUnalignedVec6)
+# else
+ jnz L(CopyVecSize)
+# endif
+
+ vpcmpb $0, %YMM7, %YMMZERO, %k4
+ kmovd %k4, %edx
+ VMOVU %YMM6, (VEC_SIZE * 2)(%rdi)
+ lea VEC_SIZE(%rdi, %rcx), %rdi
+ lea VEC_SIZE(%rsi, %rcx), %rsi
+ bsf %edx, %edx
+ cmp %r8d, %edx
+ jb L(CopyVecSizeExit)
+L(StrncpyExit):
+ cmp $65, %r8d
+ je L(StrncpyExit65)
+ cmp $33, %r8d
+ jae L(StrncpyExit33_64)
+ cmp $17, %r8d
+ jae L(StrncpyExit17_32)
+ cmp $9, %r8d
+ jae L(StrncpyExit9_16)
+ cmp $5, %r8d
+ jae L(StrncpyExit5_8)
+ cmp $3, %r8d
+ jae L(StrncpyExit3_4)
+ cmp $1, %r8d
+ ja L(StrncpyExit2)
+ je L(StrncpyExit1)
+# ifdef USE_AS_STPCPY
+ mov %rdi, %rax
+# endif
+# ifdef USE_AS_STRCAT
+ movb $0, (%rdi)
+# endif
+ ret
+
+ .p2align 4
+L(ExitZero):
+# ifndef USE_AS_STRCAT
+ mov %rdi, %rax
+# endif
+ ret
+
+# endif
+
+# ifndef USE_AS_STRCAT
+END (STRCPY)
+# else
+END (STRCAT)
+# endif
+#endif
diff --git a/sysdeps/x86_64/multiarch/strncat-evex.S b/sysdeps/x86_64/multiarch/strncat-evex.S
new file mode 100644
index 00000000..8884f023
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/strncat-evex.S
@@ -0,0 +1,3 @@
+#define USE_AS_STRNCAT
+#define STRCAT __strncat_evex
+#include "strcat-evex.S"
diff --git a/sysdeps/x86_64/multiarch/strncpy-evex.S b/sysdeps/x86_64/multiarch/strncpy-evex.S
new file mode 100644
index 00000000..40e391f0
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/strncpy-evex.S
@@ -0,0 +1,3 @@
+#define USE_AS_STRNCPY
+#define STRCPY __strncpy_evex
+#include "strcpy-evex.S"
--
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