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-rw-r--r--sysdeps/i386/bits/byteswap.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/sysdeps/i386/bits/byteswap.h b/sysdeps/i386/bits/byteswap.h
index 33af208888..7f2ddc2dc5 100644
--- a/sysdeps/i386/bits/byteswap.h
+++ b/sysdeps/i386/bits/byteswap.h
@@ -1,5 +1,6 @@
 /* Macros to swap the order of bytes in integer values.
-   Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2000, 2002, 2003, 2006, 2007
+   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
@@ -65,7 +66,9 @@ __bswap_16 (unsigned short int __bsx)
 /* 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__ \
-      && !defined __pentium4__
+      && !defined __pentium4__ && !defined __k8__ && !defined __athlon__ \
+      && !defined __k6__ && !defined __nocona__ && !defined __core2__ \
+      && !defined __geode__ && !defined __amdfam10__
 #   define __bswap_32(x)						      \
      (__extension__							      \
       ({ register unsigned int __v, __x = (x);				      \