/*===---- 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 */
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