1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/i386/i686/multiarch/ifunc-sse4_2.h b/sysdeps/i386/i686/multiarch/ifunc-sse4_2.h
new file mode 100644
index 0000000000..d4f883a77b
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/ifunc-sse4_2.h
@@ -0,0 +1,34 @@
+/* Common definition for ifunc selections optimized with SSE4_2.
+   All versions must be listed in ifunc-impl-list.c.
+   Copyright (C) 2017 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
+   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/>.  */
+
+#include <init-arch.h>
+
+extern __typeof (REDIRECT_NAME) OPTIMIZE (ia32) attribute_hidden;
+extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) attribute_hidden;
+
+static inline void *
+IFUNC_SELECTOR (void)
+{
+  const struct cpu_features* cpu_features = __get_cpu_features ();
+
+  if (CPU_FEATURES_CPU_P (cpu_features, SSE4_2))
+    return OPTIMIZE (sse42);
+
+  return OPTIMIZE (ia32);
+}