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-rw-r--r--ChangeLog3
-rw-r--r--sysdeps/i386/bits/byteswap.h5
2 files changed, 6 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 521ffeeab7..8cf9c92529 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2003-06-11  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/i386/bits/byteswap.h (__bswap_32): Use bswap instruction
+	also for P4.
+
 	* time/tzfile.c: Add a couple of __builtin_expect.
 
 	Remove warnings gcc 3.3 shows.
diff --git a/sysdeps/i386/bits/byteswap.h b/sysdeps/i386/bits/byteswap.h
index 0d7d75cb42..33af208888 100644
--- a/sysdeps/i386/bits/byteswap.h
+++ b/sysdeps/i386/bits/byteswap.h
@@ -1,5 +1,5 @@
 /* Macros to swap the order of bytes in integer values.
-   Copyright (C) 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2000, 2002, 2003 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
@@ -64,7 +64,8 @@ __bswap_16 (unsigned short int __bsx)
 # if __GNUC__ >= 2
 /* To swap the bytes in a word the i486 processors and up provide the
    `bswap' opcode.  On i386 we have to use three instructions.  */
-#  if !defined __i486__ && !defined __pentium__ && !defined __pentiumpro__
+#  if !defined __i486__ && !defined __pentium__ && !defined __pentiumpro__ \
+      && !defined __pentium4__
 #   define __bswap_32(x)						      \
      (__extension__							      \
       ({ register unsigned int __v, __x = (x);				      \