Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 7/13/2023
Public
Document Table of Contents

Intrinsics for Miscellaneous Integer Operations

The prototypes for Intel® Advanced Vector Extensions 512 (Intel® AVX-512) intrinsics are located in the zmmintrin.h header file.

To use these intrinsics, include the immintrin.h file as follows:

#include <immintrin.h>


Intrinsic Name

Operation

Corresponding
Intel® AVX-512 Instruction

_mm512_alignr_epi32, _mm512_mask_alignr_epi32, _mm512_maskz_alignr_epi32

Aligns elements of two source vectors depending on bits in a mask.

VALIGND

_mm512_alignr_epi64, _mm512_mask_alignr_epi64, _mm512_maskz_alignr_epi64

Aligns elements of two source vectors depending on bits in a mask.

VALIGNQ

variable definition
k

writemask used as a selector

a

first source vector element

b

second source vector element

src

source element to use based on writemask result

count

specifies the number of bits for shift operation


_mm512_alignr_epi32

extern __m512i __cdecl _mm512_alignr_epi32(__m512i a, __m512i b, const int count);

Concatenates vector elements from a and b into a 128-byte immediate result, shifts the result right by count of 32-bit elements, and stores the low 64 bytes (sixteen elements).



_mm512_mask_alignr_epi32

extern __m512i __cdecl _mm512_mask_alignr_epi32(__m512i src, __mmask16 k, __m512i a, __m512i b, const int count);

Concatenates vector elements from a and b into a 128-byte immediate result, shifts the result right by count of 32-bit elements, and stores the low 64 bytes (sixteen elements) using writemask k (elements are copied from src when the corresponding mask bit is not set).



_mm512_maskz_alignr_epi32

extern __m512i __cdecl _mm512_maskz_alignr_epi32(__mmask16 k, __m512i a, __m512i b, const int count);

Concatenates vector elements from a and b into a 128-byte immediate result, shifts the result right by count of 32-bit elements, and stores the low 64 bytes (sixteen elements) using zeromask k (elements are zeroed out when the corresponding mask bit is not set).



_mm512_alignr_epi64

extern __m512i __cdecl _mm512_alignr_epi64(__m512i a, __m512i b, const int count);

Concatenates vector elements from a and b into a 128-byte immediate result, shifts the result right by count of 64-bit elements, and stores the low 64 bytes (eight elements).



_mm512_mask_alignr_epi64

extern __m512i __cdecl _mm512_mask_alignr_epi64(__m512i src, __mmask8 k, __m512i a, __m512i b, const int count);

Concatenates vector elements from a and b into a 128-byte immediate result, shifts the result right by count of 64-bit elements, and stores the low 64 bytes (eight elements) using writemask k (elements are copied from src when the corresponding mask bit is not set).



_mm512_maskz_alignr_epi64

extern __m512i __cdecl _mm512_maskz_alignr_epi64(__mmask8 k, __m512i a, __m512i b, const int count);

Concatenates vector elements from a and b into a 128-byte immediate result, shifts the result right by count of 64-bit elements, and stores the low 64 bytes (eight elements) using zeromask k (elements are zeroed out when the corresponding mask bit is not set).