Implement x86-64 multiarch mempcpy in memcpy

Implement x86-64 multiarch mempcpy in memcpy to share most of code.  It
reduces code size of libc.so.

	[BZ #18858]
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove
	mempcpy-ssse3, mempcpy-ssse3-back, mempcpy-avx-unaligned
	and mempcpy-avx512-no-vzeroupper.
	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMPCPY_CHK):
	New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
	(MEMPCPY_CHK): New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3-back.S (MEMPCPY_CHK): New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3.S (MEMPCPY_CHK): New.
	(MEMPCPY): Likewise.
	* sysdeps/x86_64/multiarch/mempcpy-avx-unaligned.S: Removed.
	* sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S:
	Likewise.
	* sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy-ssse3.S: Likewise.

9 files changed, 69 insertions, 57 deletions

diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index d234f4ab66..39c090570e 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -8,10 +8,10 @@ ifeq ($(subdir),string)
 sysdep_routines += strncat-c stpncpy-c strncpy-c strcmp-ssse3 \
 		   strcmp-sse2-unaligned strncmp-ssse3 \
 		   memcmp-sse4 memcpy-ssse3 memcpy-sse2-unaligned \
-		   memcpy-avx512-no-vzeroupper mempcpy-ssse3 memmove-ssse3 \
-		   memcpy-ssse3-back mempcpy-ssse3-back memmove-avx-unaligned \
-		   memcpy-avx-unaligned mempcpy-avx-unaligned \
-		   mempcpy-avx512-no-vzeroupper memmove-ssse3-back \
+		   memcpy-avx512-no-vzeroupper memmove-ssse3 \
+		   memcpy-ssse3-back memmove-avx-unaligned \
+		   memcpy-avx-unaligned \
+		   memmove-ssse3-back \
 		   memmove-avx512-no-vzeroupper strcasecmp_l-ssse3 \
 		   strncase_l-ssse3 strcat-ssse3 strncat-ssse3\
 		   strcpy-ssse3 strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3 \
diff --git a/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S b/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
index b615d063c0..dd4187fa36 100644
--- a/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
+++ b/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
@@ -25,11 +25,26 @@
 
 #include "asm-syntax.h"
 #ifndef MEMCPY
-# define MEMCPY	__memcpy_avx_unaligned
+# define MEMCPY		__memcpy_avx_unaligned
 # define MEMCPY_CHK	__memcpy_chk_avx_unaligned
+# define MEMPCPY	__mempcpy_avx_unaligned
+# define MEMPCPY_CHK	__mempcpy_chk_avx_unaligned
 #endif
 
 	.section .text.avx,"ax",@progbits
+#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
+ENTRY (MEMPCPY_CHK)
+	cmpq	%rdx, %rcx
+	jb	HIDDEN_JUMPTARGET (__chk_fail)
+END (MEMPCPY_CHK)
+
+ENTRY (MEMPCPY)
+	movq	%rdi, %rax
+	addq	%rdx, %rax
+	jmp	L(start)
+END (MEMPCPY)
+#endif
+
 #if !defined USE_AS_BCOPY
 ENTRY (MEMCPY_CHK)
 	cmpq	%rdx, %rcx
@@ -42,6 +57,7 @@ ENTRY (MEMCPY)
 #ifdef USE_AS_MEMPCPY
 	add	%rdx, %rax
 #endif
+L(start):
 	cmp	$256, %rdx
 	jae	L(256bytesormore)
 	cmp	$16, %dl
diff --git a/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S b/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
index 3d567fc8e5..285bb83833 100644
--- a/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
+++ b/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
@@ -27,9 +27,24 @@
 #ifndef MEMCPY
 # define MEMCPY		__memcpy_avx512_no_vzeroupper
 # define MEMCPY_CHK	__memcpy_chk_avx512_no_vzeroupper
+# define MEMPCPY	__mempcpy_avx512_no_vzeroupper
+# define MEMPCPY_CHK	__mempcpy_chk_avx512_no_vzeroupper
 #endif
 
 	.section .text.avx512,"ax",@progbits
+#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
+ENTRY (MEMPCPY_CHK)
+	cmpq	%rdx, %rcx
+	jb	HIDDEN_JUMPTARGET (__chk_fail)
+END (MEMPCPY_CHK)
+
+ENTRY (MEMPCPY)
+	movq	%rdi, %rax
+	addq	%rdx, %rax
+	jmp	L(start)
+END (MEMPCPY)
+#endif
+
 #if !defined USE_AS_BCOPY
 ENTRY (MEMCPY_CHK)
 	cmpq	%rdx, %rcx
@@ -42,6 +57,7 @@ ENTRY (MEMCPY)
 #ifdef USE_AS_MEMPCPY
 	add	%rdx, %rax
 #endif
+L(start):
 	lea	(%rsi, %rdx), %rcx
 	lea	(%rdi, %rdx), %r9
 	cmp	$512, %rdx
diff --git a/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S b/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
index 08b41e9e5a..b4890f4da9 100644
--- a/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
+++ b/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
@@ -29,6 +29,8 @@
 #ifndef MEMCPY
 # define MEMCPY		__memcpy_ssse3_back
 # define MEMCPY_CHK	__memcpy_chk_ssse3_back
+# define MEMPCPY	__mempcpy_ssse3_back
+# define MEMPCPY_CHK	__mempcpy_chk_ssse3_back
 #endif
 
 #define JMPTBL(I, B)	I - B
@@ -44,6 +46,19 @@
   ud2
 
 	.section .text.ssse3,"ax",@progbits
+#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
+ENTRY (MEMPCPY_CHK)
+	cmpq	%rdx, %rcx
+	jb	HIDDEN_JUMPTARGET (__chk_fail)
+END (MEMPCPY_CHK)
+
+ENTRY (MEMPCPY)
+	movq	%rdi, %rax
+	addq	%rdx, %rax
+	jmp	L(start)
+END (MEMPCPY)
+#endif
+
 #if !defined USE_AS_BCOPY
 ENTRY (MEMCPY_CHK)
 	cmpq	%rdx, %rcx
@@ -66,6 +81,7 @@ ENTRY (MEMCPY)
 	BRANCH_TO_JMPTBL_ENTRY (L(table_144_bytes_bwd), %rdx, 4)
 L(copy_forward):
 #endif
+L(start):
 	cmp	$144, %rdx
 	jae	L(144bytesormore)
 
diff --git a/sysdeps/x86_64/multiarch/memcpy-ssse3.S b/sysdeps/x86_64/multiarch/memcpy-ssse3.S
index 95de9695f9..1ca88c0758 100644
--- a/sysdeps/x86_64/multiarch/memcpy-ssse3.S
+++ b/sysdeps/x86_64/multiarch/memcpy-ssse3.S
@@ -29,6 +29,8 @@
 #ifndef MEMCPY
 # define MEMCPY		__memcpy_ssse3
 # define MEMCPY_CHK	__memcpy_chk_ssse3
+# define MEMPCPY	__mempcpy_ssse3
+# define MEMPCPY_CHK	__mempcpy_chk_ssse3
 #endif
 
 #define JMPTBL(I, B)	I - B
@@ -44,6 +46,19 @@
   ud2
 
 	.section .text.ssse3,"ax",@progbits
+#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
+ENTRY (MEMPCPY_CHK)
+	cmpq	%rdx, %rcx
+	jb	HIDDEN_JUMPTARGET (__chk_fail)
+END (MEMPCPY_CHK)
+
+ENTRY (MEMPCPY)
+	movq	%rdi, %rax
+	addq	%rdx, %rax
+	jmp	L(start)
+END (MEMPCPY)
+#endif
+
 #if !defined USE_AS_BCOPY
 ENTRY (MEMCPY_CHK)
 	cmpq	%rdx, %rcx
@@ -66,6 +81,7 @@ ENTRY (MEMCPY)
 	jmp	L(copy_backward)
 L(copy_forward):
 #endif
+L(start):
 	cmp	$79, %rdx
 	lea     L(table_less_80bytes)(%rip), %r11
 	ja	L(80bytesormore)
diff --git a/sysdeps/x86_64/multiarch/mempcpy-avx-unaligned.S b/sysdeps/x86_64/multiarch/mempcpy-avx-unaligned.S
deleted file mode 100644
index 241378e770..0000000000
--- a/sysdeps/x86_64/multiarch/mempcpy-avx-unaligned.S
+++ /dev/null
@@ -1,22 +0,0 @@
-/* mempcpy with AVX
-   Copyright (C) 2014-2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-#define USE_AS_MEMPCPY
-#define MEMCPY		__mempcpy_avx_unaligned
-#define MEMCPY_CHK	__mempcpy_chk_avx_unaligned
-#include "memcpy-avx-unaligned.S"
diff --git a/sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S b/sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S
deleted file mode 100644
index fcc0945ea7..0000000000
--- a/sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S
+++ /dev/null
@@ -1,22 +0,0 @@
-/* mempcpy optimized with AVX512 for KNL hardware.
-   Copyright (C) 2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-#define USE_AS_MEMPCPY
-#define MEMCPY		__mempcpy_avx512_no_vzeroupper
-#define MEMCPY_CHK	__mempcpy_chk_avx512_no_vzeroupper
-#include "memcpy-avx512-no-vzeroupper.S"
diff --git a/sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S b/sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S
deleted file mode 100644
index 82ffacb8fb..0000000000
--- a/sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S
+++ /dev/null
@@ -1,4 +0,0 @@
-#define USE_AS_MEMPCPY
-#define MEMCPY		__mempcpy_ssse3_back
-#define MEMCPY_CHK	__mempcpy_chk_ssse3_back
-#include "memcpy-ssse3-back.S"
diff --git a/sysdeps/x86_64/multiarch/mempcpy-ssse3.S b/sysdeps/x86_64/multiarch/mempcpy-ssse3.S
deleted file mode 100644
index 822d98e954..0000000000
--- a/sysdeps/x86_64/multiarch/mempcpy-ssse3.S
+++ /dev/null
@@ -1,4 +0,0 @@
-#define USE_AS_MEMPCPY
-#define MEMCPY		__mempcpy_ssse3
-#define MEMCPY_CHK	__mempcpy_chk_ssse3
-#include "memcpy-ssse3.S"