Optimized st{r,p}{,n}cpy for SSE2/SSSE3 on x86-32

ChangeLog

@@ -1,3 +1,28 @@
+2011-06-22  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/i386/i686/multiarch/Makefile (sysdep_routines): Add
+	strncpy-c strcpy-ssse3 strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3
+	strcpy-sse2 strncpy-sse2 stpcpy-sse2 stpncpy-sse2.
+	* sysdeps/i386/i686/multiarch/stpcpy-sse2.S: New file.
+	* sysdeps/i386/i686/multiarch/stpcpy-ssse3.S: New file.
+	* sysdeps/i386/i686/multiarch/stpncpy-sse2.S: New file.
+	* sysdeps/i386/i686/multiarch/stpncpy-ssse3.S: New file.
+	* sysdeps/i386/i686/multiarch/stpncpy.S : New file.
+	* sysdeps/i386/i686/multiarch/strcpy-sse2.S : New file.
+	* sysdeps/i386/i686/multiarch/strcpy-ssse3.S: New file.
+	* sysdeps/i386/i686/multiarch/strcpy.S: New file.
+	* sysdeps/i386/i686/multiarch/strncpy-c.c: New file.
+	* sysdeps/i386/i686/multiarch/strncpy-sse2.S: New file.
+	* sysdeps/i386/i686/multiarch/strncpy-ssse3.S: New file.
+	* sysdeps/i386/i686/multiarch/strncpy.S: New file.
+	* sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
+	Enable unaligned load optimization for Intel Core i3, i5 and i7
+	processors.
+	* sysdeps/x86_64/multiarch/init-arch.h (bit_Fast_Unaligned_Load):
+	Define.
+	(index_Fast_Unaligned_Load): Define.
+	(HAS_FAST_UNALIGNED_LOAD): Define.
+
 2011-06-23  Marek Polacek  <mpolacek@redhat.com>
 
 	* nss/nss_db/db-open.c: Include <unistd.h> for read declaration.

NEWS

@@ -1,4 +1,4 @@
-GNU C Library NEWS -- history of user-visible changes.  2011-6-22
+GNU C Library NEWS -- history of user-visible changes.  2011-6-24
 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
 See the end for copying conditions.
 
@@ -17,6 +17,9 @@ Version 2.15
 * Add nss_db support back to glibc.  No more dependency on Berkeley db
   and support for initgroups lookups.
   Implemented by Ulrich Drepper.
+
+* Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
+  Contributed by HJ Lu.
 
 Version 2.14
 

sysdeps/i386/i686/multiarch/Makefile

@@ -10,7 +10,9 @@ sysdep_routines += bzero-sse2 memset-sse2 memcpy-ssse3 mempcpy-ssse3 \
 		   memset-sse2-rep bzero-sse2-rep strcmp-ssse3 \
 		   strcmp-sse4 strncmp-c strncmp-ssse3 strncmp-sse4 \
 		   memcmp-ssse3 memcmp-sse4 strcasestr-nonascii varshift \
-		   strlen-sse2 strlen-sse2-bsf
+		   strlen-sse2 strlen-sse2-bsf strncpy-c strcpy-ssse3 \
+		   strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3 strcpy-sse2 \
+		   strncpy-sse2 stpcpy-sse2 stpncpy-sse2
 ifeq (yes,$(config-cflags-sse4))
 sysdep_routines += strcspn-c strpbrk-c strspn-c strstr-c strcasestr-c
 CFLAGS-varshift.c += -msse4

sysdeps/i386/i686/multiarch/stpcpy-sse2.S

@@ -0,0 +1,3 @@
+#define USE_AS_STPCPY
+#define STRCPY __stpcpy_sse2
+#include "strcpy-sse2.S"

sysdeps/i386/i686/multiarch/stpcpy-ssse3.S

@@ -0,0 +1,3 @@
+#define USE_AS_STPCPY
+#define STRCPY __stpcpy_ssse3
+#include "strcpy-ssse3.S"

sysdeps/i386/i686/multiarch/stpcpy.S

@@ -0,0 +1,7 @@
+#define USE_AS_STPCPY
+#define STRCPY __stpcpy
+#include "strcpy.S"
+
+weak_alias (__stpcpy, stpcpy)
+libc_hidden_def (__stpcpy)
+libc_hidden_builtin_def (stpcpy)

sysdeps/i386/i686/multiarch/stpncpy-sse2.S

@@ -0,0 +1,4 @@
+#define USE_AS_STPCPY
+#define USE_AS_STRNCPY
+#define STRCPY __stpncpy_sse2
+#include "strcpy-sse2.S"

sysdeps/i386/i686/multiarch/stpncpy-ssse3.S

@@ -0,0 +1,4 @@
+#define USE_AS_STPCPY
+#define USE_AS_STRNCPY
+#define STRCPY __stpncpy_ssse3
+#include "strcpy-ssse3.S"

sysdeps/i386/i686/multiarch/stpncpy.S

@@ -0,0 +1,6 @@
+#define STRCPY __stpncpy
+#define USE_AS_STPCPY
+#define USE_AS_STRNCPY
+#include "strcpy.S"
+
+weak_alias (__stpncpy, stpncpy)