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* [PATCH v1 1/6] String: Add __memcmpeq as build target
@ 2021-10-27  2:43 Noah Goldstein
  2021-10-27  2:43 ` [PATCH v1 2/6] Benchtests: Add benchtests for __memcmpeq Noah Goldstein
                   ` (6 more replies)
  0 siblings, 7 replies; 19+ messages in thread
From: Noah Goldstein @ 2021-10-27  2:43 UTC (permalink / raw)
  To: libc-alpha

No bug. This commit just adds __memcmpeq as a build target so that
implementations for __memcmpeq that are not just aliases to memcmp can
be supported.
---
 string/Makefile   |  2 +-
 string/memcmpeq.c | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 string/memcmpeq.c

diff --git a/string/Makefile b/string/Makefile
index 40d6fac133..2199dd30b7 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -34,7 +34,7 @@ routines	:= strcat strchr strcmp strcoll strcpy strcspn		\
 		   strerror _strerror strlen strnlen			\
 		   strncat strncmp strncpy				\
 		   strrchr strpbrk strsignal strspn strstr strtok	\
-		   strtok_r strxfrm memchr memcmp memmove memset	\
+		   strtok_r strxfrm memchr memcmp memcmpeq memmove memset	\
 		   mempcpy bcopy bzero ffs ffsll stpcpy stpncpy		\
 		   strcasecmp strncase strcasecmp_l strncase_l		\
 		   memccpy memcpy wordcopy strsep strcasestr		\
diff --git a/string/memcmpeq.c b/string/memcmpeq.c
new file mode 100644
index 0000000000..08726325a8
--- /dev/null
+++ b/string/memcmpeq.c
@@ -0,0 +1,24 @@
+/* Copyright (C) 1991-2021 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/>.  */
+
+/* This file is intentionally left empty.  It exists so that both
+   architectures which implement __memcmpeq seperately from memcmp and
+   architectures which implement __memcmpeq by having it alias memcmp will
+   build.
+
+   The alias for __memcmpeq to memcmp for the C implementation is in
+   memcmp.c.  */
-- 
2.25.1


^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2021-10-28 18:25 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-10-27  2:43 [PATCH v1 1/6] String: Add __memcmpeq as build target Noah Goldstein
2021-10-27  2:43 ` [PATCH v1 2/6] Benchtests: Add benchtests for __memcmpeq Noah Goldstein
2021-10-27 12:45   ` H.J. Lu
2021-10-27 16:08     ` Noah Goldstein
2021-10-27 16:07   ` [PATCH v2 " Noah Goldstein
2021-10-27 17:59     ` H.J. Lu
2021-10-27  2:43 ` [PATCH v1 3/6] x86_64: Add support for __memcmpeq using sse2, avx2, and evex Noah Goldstein
2021-10-27 12:47   ` H.J. Lu
2021-10-27  2:43 ` [PATCH v1 4/6] x86_64: Add sse2 optimized __memcmpeq in memcmp-sse2.S Noah Goldstein
2021-10-27 12:48   ` H.J. Lu
2021-10-27  2:43 ` [PATCH v1 5/6] x86_64: Add avx2 optimized __memcmpeq in memcmpeq-avx2.S Noah Goldstein
2021-10-27 12:48   ` H.J. Lu
2021-10-27  2:43 ` [PATCH v1 6/6] x86_64: Add evex optimized __memcmpeq in memcmpeq-evex.S Noah Goldstein
2021-10-27  2:44   ` Noah Goldstein
2021-10-27 12:49   ` H.J. Lu
2021-10-27 12:42 ` [PATCH v1 1/6] String: Add __memcmpeq as build target H.J. Lu
2021-10-27 18:46   ` Noah Goldstein
2021-10-28 17:57 ` Joseph Myers
2021-10-28 18:25   ` Noah Goldstein

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