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From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Cc: Richard Henderson <rth@twiddle.net>
Subject: [PATCH v5 01/17] Parameterize op_t from memcopy.h
Date: Mon, 19 Sep 2022 16:59:04 -0300	[thread overview]
Message-ID: <20220919195920.956393-2-adhemerval.zanella@linaro.org> (raw)
In-Reply-To: <20220919195920.956393-1-adhemerval.zanella@linaro.org>

From: Richard Henderson <rth@twiddle.net>

It moves the op_t definition out to an specific header, adds
the attribute 'may-alias', and cleanup its duplicated definitions.

Checked with a build and check with run-built-tests=no for all major
Linux ABIs.

Co-authored-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
---
 string/memcmp.c                 |  1 -
 sysdeps/generic/memcopy.h       |  6 ++----
 sysdeps/generic/string-optype.h | 31 +++++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 5 deletions(-)
 create mode 100644 sysdeps/generic/string-optype.h

diff --git a/string/memcmp.c b/string/memcmp.c
index 40029474e6..6a9ceb8ac3 100644
--- a/string/memcmp.c
+++ b/string/memcmp.c
@@ -46,7 +46,6 @@
 /* Type to use for aligned memory operations.
    This should normally be the biggest type supported by a single load
    and store.  Must be an unsigned type.  */
-# define op_t	unsigned long int
 # define OPSIZ	(sizeof (op_t))
 
 /* Threshold value for when to enter the unrolled loops.  */
diff --git a/sysdeps/generic/memcopy.h b/sysdeps/generic/memcopy.h
index 251632e8ae..efe5f2475d 100644
--- a/sysdeps/generic/memcopy.h
+++ b/sysdeps/generic/memcopy.h
@@ -55,10 +55,8 @@
      [I fail to understand.  I feel stupid.  --roland]
 */
 
-/* Type to use for aligned memory operations.
-   This should normally be the biggest type supported by a single load
-   and store.  */
-#define	op_t	unsigned long int
+/* Type to use for aligned memory operations.  */
+#include <string-optype.h>
 #define OPSIZ	(sizeof (op_t))
 
 /* Type to use for unaligned operations.  */
diff --git a/sysdeps/generic/string-optype.h b/sysdeps/generic/string-optype.h
new file mode 100644
index 0000000000..fb6d67a19e
--- /dev/null
+++ b/sysdeps/generic/string-optype.h
@@ -0,0 +1,31 @@
+/* Define a type to use for word access.  Generic version.
+   Copyright (C) 2022 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/>.  */
+
+#ifndef _STRING_OPTYPE_H
+#define _STRING_OPTYPE_H 1
+
+/* Use the existing parameterization from gmp as a default.  */
+#include <gmp-mparam.h>
+
+#ifdef _LONG_LONG_LIMB
+typedef unsigned long long int __attribute__ ((__may_alias__)) op_t;
+#else
+typedef unsigned long int __attribute__ ((__may_alias__)) op_t;
+#endif
+
+#endif /* string-optype.h */
-- 
2.34.1


  reply	other threads:[~2022-09-19 19:59 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-19 19:59 [PATCH v5 00/17] Improve generic string routines Adhemerval Zanella
2022-09-19 19:59 ` Adhemerval Zanella [this message]
2022-09-19 19:59 ` [PATCH v5 02/17] Parameterize OP_T_THRES from memcopy.h Adhemerval Zanella
2022-09-20 10:49   ` Carlos O'Donell
2022-09-19 19:59 ` [PATCH v5 03/17] Add string-maskoff.h generic header Adhemerval Zanella
2022-09-20 11:43   ` Carlos O'Donell
2022-09-22 17:31     ` Adhemerval Zanella Netto
2023-01-05 22:49   ` Noah Goldstein
2023-01-05 23:26     ` Alejandro Colomar
2023-01-09 18:19       ` Adhemerval Zanella Netto
2023-01-09 18:02     ` Adhemerval Zanella Netto
2022-09-19 19:59 ` [PATCH v5 04/17] Add string vectorized find and detection functions Adhemerval Zanella
2023-01-05 22:53   ` Noah Goldstein
2023-01-09 18:51     ` Adhemerval Zanella Netto
2023-01-05 23:04   ` Noah Goldstein
2023-01-09 19:34     ` Adhemerval Zanella Netto
2022-09-19 19:59 ` [PATCH v5 05/17] string: Improve generic strlen Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 06/17] string: Improve generic strnlen Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 07/17] string: Improve generic strchr Adhemerval Zanella
2023-01-05 23:09   ` Noah Goldstein
2023-01-05 23:19     ` Noah Goldstein
2023-01-09 19:39       ` Adhemerval Zanella Netto
2022-09-19 19:59 ` [PATCH v5 08/17] string: Improve generic strchrnul Adhemerval Zanella
2023-01-05 23:17   ` Noah Goldstein
2023-01-09 20:35     ` Adhemerval Zanella Netto
2023-01-09 20:49       ` Richard Henderson
2023-01-09 20:59       ` Noah Goldstein
2023-01-09 21:01         ` Noah Goldstein
2023-01-09 23:33       ` Richard Henderson
2023-01-10 14:18         ` Adhemerval Zanella Netto
2023-01-10 16:24           ` Richard Henderson
2023-01-10 17:16             ` Noah Goldstein
2023-01-10 18:19               ` Adhemerval Zanella Netto
2023-01-10 17:17           ` Noah Goldstein
2023-01-10 18:16             ` Adhemerval Zanella Netto
2022-09-19 19:59 ` [PATCH v5 09/17] string: Improve generic strcmp Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 10/17] string: Improve generic memchr Adhemerval Zanella
2023-01-05 23:47   ` Noah Goldstein
2023-01-09 20:50     ` Adhemerval Zanella Netto
2023-01-05 23:49   ` Noah Goldstein
2023-01-09 20:51     ` Adhemerval Zanella Netto
2023-01-09 21:26       ` Noah Goldstein
2023-01-10 14:33         ` Adhemerval Zanella Netto
2022-09-19 19:59 ` [PATCH v5 11/17] string: Improve generic memrchr Adhemerval Zanella
2023-01-05 23:51   ` Noah Goldstein
2022-09-19 19:59 ` [PATCH v5 12/17] hppa: Add memcopy.h Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 13/17] hppa: Add string-fzb.h and string-fzi.h Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 14/17] alpha: " Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 15/17] arm: Add string-fza.h Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 16/17] powerpc: " Adhemerval Zanella
2022-09-19 19:59 ` [PATCH v5 17/17] sh: Add string-fzb.h Adhemerval Zanella
2022-12-05 17:07 ` [PATCH v5 00/17] Improve generic string routines Xi Ruoyao
2023-01-05 21:56   ` Adhemerval Zanella Netto
2023-01-05 23:52     ` Noah Goldstein
2023-01-06 13:43       ` Adhemerval Zanella Netto

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