| /*===---- bmiintrin.h - BMI intrinsics -------------------------------------=== |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| * |
| *===-----------------------------------------------------------------------=== |
| */ |
| |
| #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H |
| #error "Never use <bmiintrin.h> directly; include <x86intrin.h> instead." |
| #endif |
| |
| #ifndef __BMIINTRIN_H |
| #define __BMIINTRIN_H |
| |
| #define _tzcnt_u16(a) (__tzcnt_u16((a))) |
| |
| #define _andn_u32(a, b) (__andn_u32((a), (b))) |
| |
| /* _bextr_u32 != __bextr_u32 */ |
| #define _blsi_u32(a) (__blsi_u32((a))) |
| |
| #define _blsmsk_u32(a) (__blsmsk_u32((a))) |
| |
| #define _blsr_u32(a) (__blsr_u32((a))) |
| |
| #define _tzcnt_u32(a) (__tzcnt_u32((a))) |
| |
| /* Define the default attributes for the functions in this file. */ |
| #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("bmi"))) |
| |
| /* Allow using the tzcnt intrinsics even for non-BMI targets. Since the TZCNT |
| instruction behaves as BSF on non-BMI targets, there is code that expects |
| to use it as a potentially faster version of BSF. */ |
| #define __RELAXED_FN_ATTRS __attribute__((__always_inline__, __nodebug__)) |
| |
| /// \brief Counts the number of trailing zero bits in the operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 16-bit integer whose trailing zeros are to be counted. |
| /// \returns An unsigned 16-bit integer containing the number of trailing zero |
| /// bits in the operand. |
| static __inline__ unsigned short __RELAXED_FN_ATTRS |
| __tzcnt_u16(unsigned short __X) |
| { |
| return __X ? __builtin_ctzs(__X) : 16; |
| } |
| |
| /// \brief Performs a bitwise AND of the second operand with the one's |
| /// complement of the first operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> ANDN </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned integer containing one of the operands. |
| /// \param __Y |
| /// An unsigned integer containing one of the operands. |
| /// \returns An unsigned integer containing the bitwise AND of the second |
| /// operand with the one's complement of the first operand. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| __andn_u32(unsigned int __X, unsigned int __Y) |
| { |
| return ~__X & __Y; |
| } |
| |
| /* AMD-specified, double-leading-underscore version of BEXTR */ |
| /// \brief Extracts the specified bits from the first operand and returns them |
| /// in the least significant bits of the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned integer whose bits are to be extracted. |
| /// \param __Y |
| /// An unsigned integer used to specify which bits are extracted. Bits [7:0] |
| /// specify the index of the least significant bit. Bits [15:8] specify the |
| /// number of bits to be extracted. |
| /// \returns An unsigned integer whose least significant bits contain the |
| /// extracted bits. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| __bextr_u32(unsigned int __X, unsigned int __Y) |
| { |
| return __builtin_ia32_bextr_u32(__X, __Y); |
| } |
| |
| /* Intel-specified, single-leading-underscore version of BEXTR */ |
| /// \brief Extracts the specified bits from the first operand and returns them |
| /// in the least significant bits of the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned integer whose bits are to be extracted. |
| /// \param __Y |
| /// An unsigned integer used to specify the index of the least significant |
| /// bit for the bits to be extracted. Bits [7:0] specify the index. |
| /// \param __Z |
| /// An unsigned integer used to specify the number of bits to be extracted. |
| /// Bits [7:0] specify the number of bits. |
| /// \returns An unsigned integer whose least significant bits contain the |
| /// extracted bits. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| _bextr_u32(unsigned int __X, unsigned int __Y, unsigned int __Z) |
| { |
| return __builtin_ia32_bextr_u32 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8))); |
| } |
| |
| /// \brief Clears all bits in the source except for the least significant bit |
| /// containing a value of 1 and returns the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BLSI </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned integer whose bits are to be cleared. |
| /// \returns An unsigned integer containing the result of clearing the bits from |
| /// the source operand. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| __blsi_u32(unsigned int __X) |
| { |
| return __X & -__X; |
| } |
| |
| /// \brief Creates a mask whose bits are set to 1, using bit 0 up to and |
| /// including the least significant bit that is set to 1 in the source |
| /// operand and returns the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BLSMSK </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned integer used to create the mask. |
| /// \returns An unsigned integer containing the newly created mask. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| __blsmsk_u32(unsigned int __X) |
| { |
| return __X ^ (__X - 1); |
| } |
| |
| /// \brief Clears the least significant bit that is set to 1 in the source |
| /// operand and returns the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BLSR </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned integer containing the operand to be cleared. |
| /// \returns An unsigned integer containing the result of clearing the source |
| /// operand. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| __blsr_u32(unsigned int __X) |
| { |
| return __X & (__X - 1); |
| } |
| |
| /// \brief Counts the number of trailing zero bits in the operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 32-bit integer whose trailing zeros are to be counted. |
| /// \returns An unsigned 32-bit integer containing the number of trailing zero |
| /// bits in the operand. |
| static __inline__ unsigned int __RELAXED_FN_ATTRS |
| __tzcnt_u32(unsigned int __X) |
| { |
| return __X ? __builtin_ctz(__X) : 32; |
| } |
| |
| /// \brief Counts the number of trailing zero bits in the operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 32-bit integer whose trailing zeros are to be counted. |
| /// \returns An 32-bit integer containing the number of trailing zero bits in |
| /// the operand. |
| static __inline__ int __RELAXED_FN_ATTRS |
| _mm_tzcnt_32(unsigned int __X) |
| { |
| return __X ? __builtin_ctz(__X) : 32; |
| } |
| |
| #ifdef __x86_64__ |
| |
| #define _andn_u64(a, b) (__andn_u64((a), (b))) |
| |
| /* _bextr_u64 != __bextr_u64 */ |
| #define _blsi_u64(a) (__blsi_u64((a))) |
| |
| #define _blsmsk_u64(a) (__blsmsk_u64((a))) |
| |
| #define _blsr_u64(a) (__blsr_u64((a))) |
| |
| #define _tzcnt_u64(a) (__tzcnt_u64((a))) |
| |
| /// \brief Performs a bitwise AND of the second operand with the one's |
| /// complement of the first operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> ANDN </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer containing one of the operands. |
| /// \param __Y |
| /// An unsigned 64-bit integer containing one of the operands. |
| /// \returns An unsigned 64-bit integer containing the bitwise AND of the second |
| /// operand with the one's complement of the first operand. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| __andn_u64 (unsigned long long __X, unsigned long long __Y) |
| { |
| return ~__X & __Y; |
| } |
| |
| /* AMD-specified, double-leading-underscore version of BEXTR */ |
| /// \brief Extracts the specified bits from the first operand and returns them |
| /// in the least significant bits of the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer whose bits are to be extracted. |
| /// \param __Y |
| /// An unsigned 64-bit integer used to specify which bits are extracted. Bits |
| /// [7:0] specify the index of the least significant bit. Bits [15:8] specify |
| /// the number of bits to be extracted. |
| /// \returns An unsigned 64-bit integer whose least significant bits contain the |
| /// extracted bits. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| __bextr_u64(unsigned long long __X, unsigned long long __Y) |
| { |
| return __builtin_ia32_bextr_u64(__X, __Y); |
| } |
| |
| /* Intel-specified, single-leading-underscore version of BEXTR */ |
| /// \brief Extracts the specified bits from the first operand and returns them |
| /// in the least significant bits of the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer whose bits are to be extracted. |
| /// \param __Y |
| /// An unsigned integer used to specify the index of the least significant |
| /// bit for the bits to be extracted. Bits [7:0] specify the index. |
| /// \param __Z |
| /// An unsigned integer used to specify the number of bits to be extracted. |
| /// Bits [7:0] specify the number of bits. |
| /// \returns An unsigned 64-bit integer whose least significant bits contain the |
| /// extracted bits. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| _bextr_u64(unsigned long long __X, unsigned int __Y, unsigned int __Z) |
| { |
| return __builtin_ia32_bextr_u64 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8))); |
| } |
| |
| /// \brief Clears all bits in the source except for the least significant bit |
| /// containing a value of 1 and returns the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BLSI </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer whose bits are to be cleared. |
| /// \returns An unsigned 64-bit integer containing the result of clearing the |
| /// bits from the source operand. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| __blsi_u64(unsigned long long __X) |
| { |
| return __X & -__X; |
| } |
| |
| /// \brief Creates a mask whose bits are set to 1, using bit 0 up to and |
| /// including the least significant bit that is set to 1 in the source |
| /// operand and returns the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BLSMSK </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer used to create the mask. |
| /// \returns An unsigned 64-bit integer containing the newly created mask. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| __blsmsk_u64(unsigned long long __X) |
| { |
| return __X ^ (__X - 1); |
| } |
| |
| /// \brief Clears the least significant bit that is set to 1 in the source |
| /// operand and returns the result. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> BLSR </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer containing the operand to be cleared. |
| /// \returns An unsigned 64-bit integer containing the result of clearing the |
| /// source operand. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| __blsr_u64(unsigned long long __X) |
| { |
| return __X & (__X - 1); |
| } |
| |
| /// \brief Counts the number of trailing zero bits in the operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer whose trailing zeros are to be counted. |
| /// \returns An unsigned 64-bit integer containing the number of trailing zero |
| /// bits in the operand. |
| static __inline__ unsigned long long __RELAXED_FN_ATTRS |
| __tzcnt_u64(unsigned long long __X) |
| { |
| return __X ? __builtin_ctzll(__X) : 64; |
| } |
| |
| /// \brief Counts the number of trailing zero bits in the operand. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit integer whose trailing zeros are to be counted. |
| /// \returns An 64-bit integer containing the number of trailing zero bits in |
| /// the operand. |
| static __inline__ long long __RELAXED_FN_ATTRS |
| _mm_tzcnt_64(unsigned long long __X) |
| { |
| return __X ? __builtin_ctzll(__X) : 64; |
| } |
| |
| #endif /* __x86_64__ */ |
| |
| #undef __DEFAULT_FN_ATTRS |
| #undef __RELAXED_FN_ATTRS |
| |
| #endif /* __BMIINTRIN_H */ |