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-rw-r--r--sysdeps/i386/bits/byteswap.h2
-rw-r--r--sysdeps/x86_64/bits/byteswap.h3
2 files changed, 3 insertions, 2 deletions
diff --git a/sysdeps/i386/bits/byteswap.h b/sysdeps/i386/bits/byteswap.h
index 3baad85e8a..7f2ddc2dc5 100644
--- a/sysdeps/i386/bits/byteswap.h
+++ b/sysdeps/i386/bits/byteswap.h
@@ -68,7 +68,7 @@ __bswap_16 (unsigned short int __bsx)
 #  if !defined __i486__ && !defined __pentium__ && !defined __pentiumpro__ \
       && !defined __pentium4__ && !defined __k8__ && !defined __athlon__ \
       && !defined __k6__ && !defined __nocona__ && !defined __core2__ \
-      && !defined __geode__
+      && !defined __geode__ && !defined __amdfam10__
 #   define __bswap_32(x)						      \
      (__extension__							      \
       ({ register unsigned int __v, __x = (x);				      \
diff --git a/sysdeps/x86_64/bits/byteswap.h b/sysdeps/x86_64/bits/byteswap.h
index 7514a9f4db..ec2b17889d 100644
--- a/sysdeps/x86_64/bits/byteswap.h
+++ b/sysdeps/x86_64/bits/byteswap.h
@@ -61,7 +61,8 @@
 			  || defined __pentiumpro__ || defined __pentium4__   \
 			  || defined __k8__ || defined __athlon__	      \
 			  || defined __k6__ || defined __nocona__	      \
-			  || defined __core2__ || defined __geode__)
+			  || defined __core2__ || defined __geode__	      \
+			  || defined __amdfam10__)
 /* To swap the bytes in a word the i486 processors and up provide the
    `bswap' opcode.  On i386 we have to use three instructions.  */
 #  define __bswap_32(x) \