[AArch64] Implement CRC32 ACLE intrinsics.

	* config.gcc (aarch64*-*-*): Add arm_acle.h to extra headers.
	* Makefile.in (TEXI_GCC_FILES): Add aarch64-acle-intrinsics.texi to
	dependencies.
	* config/aarch64/aarch64-builtins.c (AARCH64_CRC32_BUILTINS): Define.
	(aarch64_crc_builtin_datum): New struct.
	(aarch64_crc_builtin_data): New.
	(aarch64_init_crc32_builtins): New function.
	(aarch64_init_builtins): Initialise CRC32 builtins when appropriate.
	(aarch64_crc32_expand_builtin): New.
	(aarch64_expand_builtin): Add CRC32 builtin expansion case.
	* config/aarch64/aarch64.h (TARGET_CPU_CPP_BUILTINS): Define
	__ARM_FEATURE_CRC32 when appropriate.
	(TARGET_CRC32): Define.
	* config/aarch64/aarch64.md (UNSPEC_CRC32B, UNSPEC_CRC32H,
	UNSPEC_CRC32W, UNSPEC_CRC32X, UNSPEC_CRC32CB, UNSPEC_CRC32CH,
	UNSPEC_CRC32CW, UNSPEC_CRC32CX): New unspec values.
	(aarch64_<crc_variant>): New pattern.
	* config/aarch64/arm_acle.h: New file.
	* config/aarch64/iterators.md (CRC): New int iterator.
	(crc_variant, crc_mode): New int attributes.
	* doc/aarch64-acle-intrinsics.texi: New file.
	* doc/extend.texi (aarch64): Document aarch64 ACLE intrinsics.
	Include aarch64-acle-intrinsics.texi.

From-SVN: r211440

1 files changed, 90 insertions, 0 deletions

diff --git a/gcc/config/aarch64/arm_acle.h b/gcc/config/aarch64/arm_acle.h
new file mode 100644
index 00000000000..2e74696e204
--- /dev/null
+++ b/gcc/config/aarch64/arm_acle.h
@@ -0,0 +1,90 @@
+/* AArch64 Non-NEON ACLE intrinsics include file.
+
+   Copyright (C) 2014 Free Software Foundation, Inc.
+   Contributed by ARM Ltd.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3, or (at your
+   option) any later version.
+
+   GCC 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 General Public
+   License for more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GCC_ARM_ACLE_H
+#define _GCC_ARM_ACLE_H
+
+#include <stdint.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __ARM_FEATURE_CRC32
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32b (uint32_t __a, uint8_t __b)
+{
+  return __builtin_aarch64_crc32b (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32cb (uint32_t __a, uint8_t __b)
+{
+  return __builtin_aarch64_crc32cb (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32ch (uint32_t __a, uint16_t __b)
+{
+  return __builtin_aarch64_crc32ch (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32cw (uint32_t __a, uint32_t __b)
+{
+  return __builtin_aarch64_crc32cw (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32cd (uint32_t __a, uint64_t __b)
+{
+  return __builtin_aarch64_crc32cx (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32h (uint32_t __a, uint16_t __b)
+{
+  return __builtin_aarch64_crc32h (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32w (uint32_t __a, uint32_t __b)
+{
+  return __builtin_aarch64_crc32w (__a, __b);
+}
+
+__extension__ static __inline uint32_t __attribute__ ((__always_inline__))
+__crc32d (uint32_t __a, uint64_t __b)
+{
+  return __builtin_aarch64_crc32x (__a, __b);
+}
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif