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Diffstat (limited to 'qemu/disas/libvixl/vixl/compiler-intrinsics.h')
| -rw-r--r-- | qemu/disas/libvixl/vixl/compiler-intrinsics.h | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/qemu/disas/libvixl/vixl/compiler-intrinsics.h b/qemu/disas/libvixl/vixl/compiler-intrinsics.h deleted file mode 100644 index 9431beddb..000000000 --- a/qemu/disas/libvixl/vixl/compiler-intrinsics.h +++ /dev/null @@ -1,155 +0,0 @@ -// Copyright 2015, ARM Limited -// 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 Limited 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 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 VIXL_COMPILER_INTRINSICS_H -#define VIXL_COMPILER_INTRINSICS_H - -#include "globals.h" - -namespace vixl { - -// Helper to check whether the version of GCC used is greater than the specified -// requirement. -#define MAJOR 1000000 -#define MINOR 1000 -#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) -#define GCC_VERSION_OR_NEWER(major, minor, patchlevel) \ - ((__GNUC__ * MAJOR + __GNUC_MINOR__ * MINOR + __GNUC_PATCHLEVEL__) >= \ - ((major) * MAJOR + (minor) * MINOR + (patchlevel))) -#elif defined(__GNUC__) && defined(__GNUC_MINOR__) -#define GCC_VERSION_OR_NEWER(major, minor, patchlevel) \ - ((__GNUC__ * MAJOR + __GNUC_MINOR__ * MINOR) >= \ - ((major) * MAJOR + (minor) * MINOR + (patchlevel))) -#else -#define GCC_VERSION_OR_NEWER(major, minor, patchlevel) 0 -#endif - - -#if defined(__clang__) && !defined(VIXL_NO_COMPILER_BUILTINS) - -#define COMPILER_HAS_BUILTIN_CLRSB (__has_builtin(__builtin_clrsb)) -#define COMPILER_HAS_BUILTIN_CLZ (__has_builtin(__builtin_clz)) -#define COMPILER_HAS_BUILTIN_CTZ (__has_builtin(__builtin_ctz)) -#define COMPILER_HAS_BUILTIN_FFS (__has_builtin(__builtin_ffs)) -#define COMPILER_HAS_BUILTIN_POPCOUNT (__has_builtin(__builtin_popcount)) - -#elif defined(__GNUC__) && !defined(VIXL_NO_COMPILER_BUILTINS) -// The documentation for these builtins is available at: -// https://gcc.gnu.org/onlinedocs/gcc-$MAJOR.$MINOR.$PATCHLEVEL/gcc//Other-Builtins.html - -# define COMPILER_HAS_BUILTIN_CLRSB (GCC_VERSION_OR_NEWER(4, 7, 0)) -# define COMPILER_HAS_BUILTIN_CLZ (GCC_VERSION_OR_NEWER(3, 4, 0)) -# define COMPILER_HAS_BUILTIN_CTZ (GCC_VERSION_OR_NEWER(3, 4, 0)) -# define COMPILER_HAS_BUILTIN_FFS (GCC_VERSION_OR_NEWER(3, 4, 0)) -# define COMPILER_HAS_BUILTIN_POPCOUNT (GCC_VERSION_OR_NEWER(3, 4, 0)) - -#else -// One can define VIXL_NO_COMPILER_BUILTINS to force using the manually -// implemented C++ methods. - -#define COMPILER_HAS_BUILTIN_BSWAP false -#define COMPILER_HAS_BUILTIN_CLRSB false -#define COMPILER_HAS_BUILTIN_CLZ false -#define COMPILER_HAS_BUILTIN_CTZ false -#define COMPILER_HAS_BUILTIN_FFS false -#define COMPILER_HAS_BUILTIN_POPCOUNT false - -#endif - - -template<typename V> -inline bool IsPowerOf2(V value) { - return (value != 0) && ((value & (value - 1)) == 0); -} - - -// Declaration of fallback functions. -int CountLeadingSignBitsFallBack(int64_t value, int width); -int CountLeadingZerosFallBack(uint64_t value, int width); -int CountSetBitsFallBack(uint64_t value, int width); -int CountTrailingZerosFallBack(uint64_t value, int width); - - -// Implementation of intrinsics functions. -// TODO: The implementations could be improved for sizes different from 32bit -// and 64bit: we could mask the values and call the appropriate builtin. - -template<typename V> -inline int CountLeadingSignBits(V value, int width = (sizeof(V) * 8)) { -#if COMPILER_HAS_BUILTIN_CLRSB - if (width == 32) { - return __builtin_clrsb(value); - } else if (width == 64) { - return __builtin_clrsbll(value); - } -#endif - return CountLeadingSignBitsFallBack(value, width); -} - - -template<typename V> -inline int CountLeadingZeros(V value, int width = (sizeof(V) * 8)) { -#if COMPILER_HAS_BUILTIN_CLZ - if (width == 32) { - return (value == 0) ? 32 : __builtin_clz(static_cast<unsigned>(value)); - } else if (width == 64) { - return (value == 0) ? 64 : __builtin_clzll(value); - } -#endif - return CountLeadingZerosFallBack(value, width); -} - - -template<typename V> -inline int CountSetBits(V value, int width = (sizeof(V) * 8)) { -#if COMPILER_HAS_BUILTIN_POPCOUNT - if (width == 32) { - return __builtin_popcount(static_cast<unsigned>(value)); - } else if (width == 64) { - return __builtin_popcountll(value); - } -#endif - return CountSetBitsFallBack(value, width); -} - - -template<typename V> -inline int CountTrailingZeros(V value, int width = (sizeof(V) * 8)) { -#if COMPILER_HAS_BUILTIN_CTZ - if (width == 32) { - return (value == 0) ? 32 : __builtin_ctz(static_cast<unsigned>(value)); - } else if (width == 64) { - return (value == 0) ? 64 : __builtin_ctzll(value); - } -#endif - return CountTrailingZerosFallBack(value, width); -} - -} // namespace vixl - -#endif // VIXL_COMPILER_INTRINSICS_H - |