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GNU C Library master sources branch hjl/avx2/fix created. glibc-2.25-409-gb5b8fce
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 6 Jun 2017 12:36:25 -0000
- Subject: GNU C Library master sources branch hjl/avx2/fix created. glibc-2.25-409-gb5b8fce
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=b5b8fce19221891afba4907e9dd7e05b9e797f53
commit b5b8fce19221891afba4907e9dd7e05b9e797f53
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Jun 6 05:31:48 2017 -0700
x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S
Since wcsnlen.S uses pminud which is the part of SSE4.1, move wcsnlen.S
to multiarch/wcsnlen-sse4_1.S.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
wcsnlen-sse4_1 and wcsnlen-c.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Test __wcsnlen_sse4_1 and
__wcsnlen_sse2.
* sysdeps/x86_64/multiarch/ifunc-sse4_1.h: New file.
* sysdeps/x86_64/multiarch/wcsnlen-c.c: Likewise.
* sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S: Likewise.
* sysdeps/x86_64/multiarch/wcsnlen.c: Likewise.
* sysdeps/x86_64/wcsnlen.S: Removed.
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index b040288..310a3a4 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -33,7 +33,8 @@ endif
ifeq ($(subdir),wcsmbs)
sysdep_routines += wmemcmp-sse4 wmemcmp-ssse3 wmemcmp-c \
wmemcmp-avx2-movbe \
- wcscpy-ssse3 wcscpy-c
+ wcscpy-ssse3 wcscpy-c \
+ wcsnlen-sse4_1 wcsnlen-c
endif
ifeq ($(subdir),debug)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index b61bc9f..ee4243a 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -296,6 +296,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__wcscpy_ssse3)
IFUNC_IMPL_ADD (array, i, wcscpy, 1, __wcscpy_sse2))
+ /* Support sysdeps/x86_64/multiarch/wcsnlen.c. */
+ IFUNC_IMPL (i, name, wcsnlen,
+ IFUNC_IMPL_ADD (array, i, wcsnlen,
+ HAS_CPU_FEATURE (SSE4_1),
+ __wcsnlen_sse4_1)
+ IFUNC_IMPL_ADD (array, i, wcsnlen, 1, __wcsnlen_sse2))
+
/* Support sysdeps/x86_64/multiarch/wmemcmp.S. */
IFUNC_IMPL (i, name, wmemcmp,
IFUNC_IMPL_ADD (array, i, wmemcmp,
diff --git a/sysdeps/x86_64/multiarch/ifunc-sse4_1.h b/sysdeps/x86_64/multiarch/ifunc-sse4_1.h
new file mode 100644
index 0000000..2b89231
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/ifunc-sse4_1.h
@@ -0,0 +1,34 @@
+/* Common definition for ifunc selections optimized with SSE2 and SSE4.1.
+ All versions must be listed in ifunc-impl-list.c.
+ Copyright (C) 2017 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/>. */
+
+#include <init-arch.h>
+
+extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
+extern __typeof (REDIRECT_NAME) OPTIMIZE (sse4_1) attribute_hidden;
+
+static inline void *
+IFUNC_SELECTOR (void)
+{
+ const struct cpu_features* cpu_features = __get_cpu_features ();
+
+ if (CPU_FEATURES_CPU_P (cpu_features, SSE4_1))
+ return OPTIMIZE (sse4_1);
+
+ return OPTIMIZE (sse2);
+}
diff --git a/sysdeps/x86_64/multiarch/wcsnlen-c.c b/sysdeps/x86_64/multiarch/wcsnlen-c.c
new file mode 100644
index 0000000..e1ec7cf
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/wcsnlen-c.c
@@ -0,0 +1,9 @@
+#if IS_IN (libc)
+# include <wchar.h>
+
+# define WCSNLEN __wcsnlen_sse2
+
+extern __typeof (wcsnlen) __wcsnlen_sse2;
+#endif
+
+#include "wcsmbs/wcsnlen.c"
diff --git a/sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S b/sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S
new file mode 100644
index 0000000..a8cab0c
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S
@@ -0,0 +1,5 @@
+#define AS_WCSLEN
+#define AS_STRNLEN
+#define strlen __wcsnlen_sse4_1
+
+#include "../strlen.S"
diff --git a/sysdeps/x86_64/multiarch/wcsnlen.c b/sysdeps/x86_64/multiarch/wcsnlen.c
new file mode 100644
index 0000000..5f74d2c
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/wcsnlen.c
@@ -0,0 +1,31 @@
+/* Multiple versions of wcsnlen.
+ All versions must be listed in ifunc-impl-list.c.
+ Copyright (C) 2017 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 multiple versions only for the definition in libc. */
+#if IS_IN (libc)
+# define __wcsnlen __redirect_wcsnlen
+# include <wchar.h>
+# undef __wcsnlen
+
+# define SYMBOL_NAME wcsnlen
+# include "ifunc-sse4_1.h"
+
+libc_ifunc_redirected (__redirect_wcsnlen, __wcsnlen, IFUNC_SELECTOR ());
+weak_alias (__wcsnlen, wcsnlen);
+#endif
diff --git a/sysdeps/x86_64/wcsnlen.S b/sysdeps/x86_64/wcsnlen.S
deleted file mode 100644
index 968bb69..0000000
--- a/sysdeps/x86_64/wcsnlen.S
+++ /dev/null
@@ -1,7 +0,0 @@
-#define AS_WCSLEN
-#define AS_STRNLEN
-#define strlen __wcsnlen
-
-#include "strlen.S"
-
-weak_alias(__wcsnlen, wcsnlen)
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