1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/x86/init-arch.h b/sysdeps/x86/init-arch.h
new file mode 100644
index 0000000000..17a38d2967
--- /dev/null
+++ b/sysdeps/x86/init-arch.h
@@ -0,0 +1,35 @@
+/* This file is part of the GNU C Library.
+   Copyright (C) 2008-2016 Free Software Foundation, Inc.
+
+   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/>.  */
+
+#ifdef  __ASSEMBLER__
+# include <cpu-features.h>
+#else
+# include <ldsodefs.h>
+#endif
+
+#ifndef __x86_64__
+/* Due to the reordering and the other nifty extensions in i686, it is
+   not really good to use heavily i586 optimized code on an i686.  It's
+   better to use i486 code if it isn't an i586.  */
+# if MINIMUM_ISA == 686
+#  define USE_I586 0
+#  define USE_I686 1
+# else
+#  define USE_I586 (HAS_ARCH_FEATURE (I586) && !HAS_ARCH_FEATURE (I686))
+#  define USE_I686 HAS_ARCH_FEATURE (I686)
+# endif
+#endif