--- configure.orig	2015-02-26 12:45:55 UTC
+++ configure
@@ -3912,6 +3912,7 @@ fi
 if test "$impl_choice" = "none"; then
   case $host in
     ia64-*-*)      impl_choice=sse;;
+    amd64-*-*)     impl_choice=sse;;
     i?86-*-*)      impl_choice=sse;;
     x86*-*-*)      impl_choice=sse;;
     powerpc*-*-*)  impl_choice=vmx;;
