| /*===---- bmi2intrin.h - BMI2 intrinsics -----------------------------------=== |
| * |
| * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| * See https://llvm.org/LICENSE.txt for license information. |
| * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| * |
| *===-----------------------------------------------------------------------=== |
| */ |
| |
| #ifndef __IMMINTRIN_H |
| #error "Never use <bmi2intrin.h> directly; include <immintrin.h> instead." |
| #endif |
| |
| #ifndef __BMI2INTRIN_H |
| #define __BMI2INTRIN_H |
| |
| /* Define the default attributes for the functions in this file. */ |
| #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("bmi2"))) |
| |
| /// Copies the unsigned 32-bit integer \a __X and zeroes the upper bits |
| /// starting at bit number \a __Y. |
| /// |
| /// \code{.operation} |
| /// i := __Y[7:0] |
| /// result := __X |
| /// IF i < 32 |
| /// result[31:i] := 0 |
| /// FI |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c BZHI instruction. |
| /// |
| /// \param __X |
| /// The 32-bit source value to copy. |
| /// \param __Y |
| /// The lower 8 bits specify the bit number of the lowest bit to zero. |
| /// \returns The partially zeroed 32-bit value. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| _bzhi_u32(unsigned int __X, unsigned int __Y) |
| { |
| return __builtin_ia32_bzhi_si(__X, __Y); |
| } |
| |
| /// Deposit (scatter) low-order bits from the unsigned 32-bit integer \a __X |
| /// into the 32-bit result, according to the mask in the unsigned 32-bit |
| /// integer \a __Y. All other bits of the result are zero. |
| /// |
| /// \code{.operation} |
| /// i := 0 |
| /// result := 0 |
| /// FOR m := 0 TO 31 |
| /// IF __Y[m] == 1 |
| /// result[m] := __X[i] |
| /// i := i + 1 |
| /// ENDIF |
| /// ENDFOR |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c PDEP instruction. |
| /// |
| /// \param __X |
| /// The 32-bit source value to copy. |
| /// \param __Y |
| /// The 32-bit mask specifying where to deposit source bits. |
| /// \returns The 32-bit result. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| _pdep_u32(unsigned int __X, unsigned int __Y) |
| { |
| return __builtin_ia32_pdep_si(__X, __Y); |
| } |
| |
| /// Extract (gather) bits from the unsigned 32-bit integer \a __X into the |
| /// low-order bits of the 32-bit result, according to the mask in the |
| /// unsigned 32-bit integer \a __Y. All other bits of the result are zero. |
| /// |
| /// \code{.operation} |
| /// i := 0 |
| /// result := 0 |
| /// FOR m := 0 TO 31 |
| /// IF __Y[m] == 1 |
| /// result[i] := __X[m] |
| /// i := i + 1 |
| /// ENDIF |
| /// ENDFOR |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c PEXT instruction. |
| /// |
| /// \param __X |
| /// The 32-bit source value to copy. |
| /// \param __Y |
| /// The 32-bit mask specifying which source bits to extract. |
| /// \returns The 32-bit result. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| _pext_u32(unsigned int __X, unsigned int __Y) |
| { |
| return __builtin_ia32_pext_si(__X, __Y); |
| } |
| |
| /// Multiplies the unsigned 32-bit integers \a __X and \a __Y to form a |
| /// 64-bit product. Stores the upper 32 bits of the product in the |
| /// memory at \a __P and returns the lower 32 bits. |
| /// |
| /// \code{.operation} |
| /// Store32(__P, (__X * __Y)[63:32]) |
| /// result := (__X * __Y)[31:0] |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c MULX instruction. |
| /// |
| /// \param __X |
| /// An unsigned 32-bit multiplicand. |
| /// \param __Y |
| /// An unsigned 32-bit multiplicand. |
| /// \param __P |
| /// A pointer to memory for storing the upper half of the product. |
| /// \returns The lower half of the product. |
| static __inline__ unsigned int __DEFAULT_FN_ATTRS |
| _mulx_u32(unsigned int __X, unsigned int __Y, unsigned int *__P) |
| { |
| unsigned long long __res = (unsigned long long) __X * __Y; |
| *__P = (unsigned int)(__res >> 32); |
| return (unsigned int)__res; |
| } |
| |
| #ifdef __x86_64__ |
| |
| /// Copies the unsigned 64-bit integer \a __X and zeroes the upper bits |
| /// starting at bit number \a __Y. |
| /// |
| /// \code{.operation} |
| /// i := __Y[7:0] |
| /// result := __X |
| /// IF i < 64 |
| /// result[63:i] := 0 |
| /// FI |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c BZHI instruction. |
| /// |
| /// \param __X |
| /// The 64-bit source value to copy. |
| /// \param __Y |
| /// The lower 8 bits specify the bit number of the lowest bit to zero. |
| /// \returns The partially zeroed 64-bit value. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| _bzhi_u64(unsigned long long __X, unsigned long long __Y) |
| { |
| return __builtin_ia32_bzhi_di(__X, __Y); |
| } |
| |
| /// Deposit (scatter) low-order bits from the unsigned 64-bit integer \a __X |
| /// into the 64-bit result, according to the mask in the unsigned 64-bit |
| /// integer \a __Y. All other bits of the result are zero. |
| /// |
| /// \code{.operation} |
| /// i := 0 |
| /// result := 0 |
| /// FOR m := 0 TO 63 |
| /// IF __Y[m] == 1 |
| /// result[m] := __X[i] |
| /// i := i + 1 |
| /// ENDIF |
| /// ENDFOR |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c PDEP instruction. |
| /// |
| /// \param __X |
| /// The 64-bit source value to copy. |
| /// \param __Y |
| /// The 64-bit mask specifying where to deposit source bits. |
| /// \returns The 64-bit result. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| _pdep_u64(unsigned long long __X, unsigned long long __Y) |
| { |
| return __builtin_ia32_pdep_di(__X, __Y); |
| } |
| |
| /// Extract (gather) bits from the unsigned 64-bit integer \a __X into the |
| /// low-order bits of the 64-bit result, according to the mask in the |
| /// unsigned 64-bit integer \a __Y. All other bits of the result are zero. |
| /// |
| /// \code{.operation} |
| /// i := 0 |
| /// result := 0 |
| /// FOR m := 0 TO 63 |
| /// IF __Y[m] == 1 |
| /// result[i] := __X[m] |
| /// i := i + 1 |
| /// ENDIF |
| /// ENDFOR |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c PEXT instruction. |
| /// |
| /// \param __X |
| /// The 64-bit source value to copy. |
| /// \param __Y |
| /// The 64-bit mask specifying which source bits to extract. |
| /// \returns The 64-bit result. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| _pext_u64(unsigned long long __X, unsigned long long __Y) |
| { |
| return __builtin_ia32_pext_di(__X, __Y); |
| } |
| |
| /// Multiplies the unsigned 64-bit integers \a __X and \a __Y to form a |
| /// 128-bit product. Stores the upper 64 bits of the product to the |
| /// memory addressed by \a __P and returns the lower 64 bits. |
| /// |
| /// \code{.operation} |
| /// Store64(__P, (__X * __Y)[127:64]) |
| /// result := (__X * __Y)[63:0] |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c MULX instruction. |
| /// |
| /// \param __X |
| /// An unsigned 64-bit multiplicand. |
| /// \param __Y |
| /// An unsigned 64-bit multiplicand. |
| /// \param __P |
| /// A pointer to memory for storing the upper half of the product. |
| /// \returns The lower half of the product. |
| static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
| _mulx_u64 (unsigned long long __X, unsigned long long __Y, |
| unsigned long long *__P) |
| { |
| unsigned __int128 __res = (unsigned __int128) __X * __Y; |
| *__P = (unsigned long long) (__res >> 64); |
| return (unsigned long long) __res; |
| } |
| |
| #endif /* __x86_64__ */ |
| |
| #undef __DEFAULT_FN_ATTRS |
| |
| #endif /* __BMI2INTRIN_H */ |