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diff --git a/src/isa-l/igzip/aarch64/options_aarch64.h b/src/isa-l/igzip/aarch64/options_aarch64.h
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+/**********************************************************************
+  Copyright(c) 2019 Arm Corporation All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+    * Neither the name of Arm Corporation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**********************************************************************/
+
+#ifndef __OPTIONS_AARCH64_H__
+#define __OPTIONS_AARCH64_H__
+
+
+#ifdef __ASSEMBLY__
+
+///   Options:dir
+///   m - reschedule mem reads
+///   e b - bitbuff style
+///   t s x - compare style
+///   h - limit hash updates
+///   l - use longer huffman table
+///   f - fix cache read
+
+#ifndef IGZIP_HIST_SIZE
+#define IGZIP_HIST_SIZE (32 * 1024)
+#endif
+
+#if (IGZIP_HIST_SIZE > (32 * 1024))
+#undef IGZIP_HIST_SIZE
+#define IGZIP_HIST_SIZE (32 * 1024)
+#endif
+
+#ifdef LONGER_HUFFTABLE
+#if (IGZIP_HIST_SIZE > 8 * 1024)
+#undef IGZIP_HIST_SIZE
+#define IGZIP_HIST_SIZE (8 * 1024)
+#endif
+#endif
+
+///   (h) limit hash update
+#define LIMIT_HASH_UPDATE
+
+///   (f) fix cache read problem
+#define FIX_CACHE_READ
+
+#define ISAL_DEF_MAX_HDR_SIZE 328
+
+
+
+#endif
+#endif