Clean up SSE variable shifts

1 files changed, 27 insertions, 0 deletions

diff --git a/sysdeps/x86_64/multiarch/varshift.h b/sysdeps/x86_64/multiarch/varshift.h
new file mode 100644
index 0000000000..d679739f69
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/varshift.h
@@ -0,0 +1,27 @@
+/* Helper for variable shifts of SSE registers.
+   Copyright (C) 2010 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+
+extern char ___m128i_shift_right[31] __attribute__((visibility("hidden")));
+
+static __inline__ __m128i
+__m128i_shift_right (__m128i value, unsigned long offset)
+{
+  return _mm_shuffle_epi8 (value, _mm_loadu_si128 ((__m128 *) (___m128i_shift_right + offset)));
+}