Release Notes

Published: 07/23/2021

Intel® Intrinsics Guide v3.6.0

06/30/2021

  • Added intrinsics for AVX512_FP16, ENQCMD, AVX_VNNI, HRESET, KEYLOCKER, KEYLOCKER_WIDE and UINTR.
  • Added two intrinsics for AVX512F: _mm512_(mask_)i32loscatter_epi64.
  • Improved description for WAITPKG intrinsics.
  • Improved operation for *_reduce_* intrinsics.
  • Improved description for *_min/max_* float intrinsics.
  • Improved operation for *_comi_* intrinsics.
  • Updated XML format: removed <type> tag; reordered the tags and attributes.
  • Shared CPUID intrinsics now will be listed as two separate items.
  • Updated notices and disclaimers.
  • Update introduction with links to supporting documentation.
  • Updated fonts to use web-safe font stack.

Intel® Intrinsics Guide v3.5.4

10/19/2020

  • Fixed a recurring typo ("Seqeuence" --> "Sequence").

Intel® Intrinsics Guide v3.5.3

06/30/2020

  • Added intrinsics for AMX-TILE, AMX-BF16, and AMX-INT8.

Intel® Intrinsics Guide v3.5.2

06/05/2020

  • Added intrinsics for SERIALIZE and TSXLDTRK.
  • Improved indication of intrinsics that are sequences of instructions.
  • Improved presentation of long lines in operations.

Intel® Intrinsics Guide v3.5.1

05/22/2020

  • Updated latency and throughput data for Skylake.
  • Resolved an issue preventing intrinsics from loading.

Intel® Intrinsics Guide v3.5.0

03/16/2020

  • Added latency and throughput data for 10th gen Intel® Core™ processor family (Icelake).
  • Updated XML format: added a <return> tag for the return type and removed the rettype attribute; added several attributes to <return> and <parameter>; added XED iform attribute to <instruction>.
  • Added instruction forms for many AVX512 intrinsics.
  • Clarified embedded-rounding vs suppress-all-exceptions distinction for many intrinsics.
  • Clarified masking operands in instruction forms.
  • Corrected operation for all AVX512_VNNI and GFNI intrinsics.
  • Clarified immediate bit-range access in many operations.
  • Corrected destination zeroing for many store intrinsics.
  • Clarified operator precedence for many intrinsic operations.
  • Clarified indication of signed integers in many descriptions.
  • Corrected scalar upper pass through variable for many intrinsics.
  • Clarified memory accesses for many intrinsics.
  • Added CPUID for CET_SS intrinsics.
  • Corrected operations for many scatter and gather intrinsics.
  • Corrected descriptions and operations for SVML intrinsics involving complex numbers.
  • Corrected operation for _mm512_set_epi8.
  • Corrected description for several *_set_epi* intrinsics.
  • Corrected instruction for some *_xor_* intrinsics.
  • Corrected description and operation for *_ktestc_* and *_kortestc_* intrinsics.
  • Corrected operation for several *_permutex2var_* intrinsics.
  • Clarified imm8 bit ranges for _alignr_ intrinsics.
  • Corrected write mask pass through for some broadcast_i* and broadcast_f* intrinsics.
  • Corrected imm8 bit range for some shuffle_i* intrinsics.
  • Corrected operation for _kor_* intrinsics.
  • Corrected operations for unmasked _movedup_ intrinsics.
  • Corrected operations for *_set4_* and *_setr4_* intrinsics.
  • Clarified imm8 bit range for _kshiftri_mask16.
  • Corrected parameter types for *_4fmadd_ps intrinsics.
  • Corrected operation for _mm256_mpsadbw_epu8.
  • Corrected operations for *_maskz_mulhrs_epi16 intrinsics.
  • Corrected operations for *_hadds_* intrinsics.
  • Corrected saturation function for *_cvtusepi* intrinsics.
  • Corrected shift direction for some *_srai_* intrinsics.
  • Corrected operation for _mm256_mask_srlv_epi16.
  • Corrected operation for _mm512_reduce_max_epi64.
  • Corrected operations for _mm512_mask_permute4f128_* intrinsics.
  • Corrected operations for _mm_tzcnti_* intrinsics.
  • Corrected operations for several *_cvtt_* intrinsics.
  • Corrected operations for several scalar conversion intrinsics.
  • Corrected operations for several *_exp2a23_* intrinsics.
  • Corrected operations for several intrinsics with single-precision reciprocals.
  • Corrected operations for *_fmadd_ps intrinsics.
  • Corrected operation for _mm_cvttss_si64.
  • Corrected comparison operator for several cmpgt and cmplt intrinsics.
  • Corrected operations for several right rotation intrinsics.
  • Corrected operation for _mm_ceil_pd.
  • Corrected operation for _mm512_mask_floor_ps.
  • Corrected operations for several loadu intrinsics.
  • Corrected src parameter for _mask_exp2a23_ intrinsics.

Intel® Intrinsics Guide v3.4.7

07/15/2019

  • Corrected operations for add/sub and sub/add intrinsics.
  • Corrected operations for GFNI affine intrinsics.
  • Corrected operations for dpbf16 intrinsics.

Intel® Intrinsics Guide v3.4.6

07/15/2019

  • Added intrinsics for AVX512_VP2INTERSECT.

Intel® Intrinsics Guide v3.4.5

05/30/2019

  • Added additional latency & throughput data for AVX-512 instructions.
  • Improvements to operations for most intrinsics.
  • Corrections to operations for many intrinsics, including AVX512_BITALG and AVX512_VNNI.

Intel® Intrinsics Guide v3.4.4

04/17/2019

  • Added BF16 intrinsics.
  • Corrected operations for *_reduce_ps/pd intrinsics.
  • Corrected operations for non-mask sllv_epi16 intrinsics.

Intel® Intrinsics Guide v3.4.3

04/08/2019

  • Improved operation syntax for many intrinsics.
  • Corrected parameters for several cmp intrinsics.
  • Corrected details of _mm512[_mask]_log2_ps.
  • Corrected operations for: _mm_cvtpd_ps, _m_pmaddwd, *_madd_epi16, *_maskz_sub_epi8, *_maskz_sub_epi16.
  • Corrected instructions for _mm_comi_round_ss.
  • Corrected description and operation for _lrot*,.
  • Corrected instructions and descriptions and operation _tpause and _umwait.

Intel® Intrinsics Guide v3.4.2

10/05/2018

  • Added intrinsics for AVX512_BITALG, AVX512_VBMI2, AVX512_VNNI, GFNI, VAES, VPCLMULQDQ, and others.
  • Corrected CPUID and description for load/storebe intrinsics.
  • Corrected operation for _mm_mask_4fmadd_ss.
  • Corrected description for _mm_srli_epi32.
  • Corrected description for _mm_alignr_pi8.
  • Corrected description and operation for _xtest.

Intel® Intrinsics Guide v3.4.1

04/26/2018

  • Added ptwrite and encl* intrinsics.
  • Corrected description and operation for blend intrinsics with an immediate control.
  • Corrected CPUID for _mm512_4fmadd_ps.
  • Corrected description for masked compare intrinsics.
  • Clarified that includes should use <header.h> rather than "header.h".
  • Corrected operations for _mm512_kunpack* intrinsics.
  • Further clarified up and down conversion for intrinsics supported on both KNC and AVX-512.
  • Corrected return type for 4dpwssd* intrinsics.
  • Corrected description and operation for scalar mask3 intrinsics.

Intel® Intrinsics Guide v3.4

09/07/2017

  • Added intrinsics for Knights Mill (KNM).
  • Corrected references to "_MM_CMPINT_NE".
  • Corrected instruction for _mm512_stream_si512.
  • Corrected CPUID for _mm256_extract_epi8, _mm256_extract_epi16, _mm[256,512]_cvt[ss,sd,si256,si512].
  • Improved description of _xbegin.
  • Clarified up and down conversion for intrinsics supported on both KNC and AVX-512.
  • Corrected description of _mm_countbits_64.

Intel® Intrinsics Guide v3.3.16

01/26/2017

  • Added additional latency & throughput data up through 6th generation Intel® Core™ processor family (Skylake) and 2nd Generation Intel® Xeon Phi™ (Knights Landing).
  • Added documentation on 36 intrinsics.
  • Corrected operations for vsqrtss intrinsics.
  • Corrected movd CPUID bits.

Intel® Intrinsics Guide v3.3.15

09/16/2016

  • Corrected operation for _mm_mpsadbw_epu8.
  • Corrected latency and throughput data for FP16C intrinsics.
  • Corrected operations for *_madd_epi16 intrinsics.
  • Corrected operations for _subborrow_u* intrinsics.
  • Corrected instruction forms for *_i32gather_* and *_i64gather_* intrinsics.
  • Corrected operations *_i64gather_* intrinsics.
  • Corrected operation for _mm256_shuffle_epi8.
  • Corrected operations for _mm512_shuffle_epi8, _mm512_mask_shuffle_epi8, _mm512_maskz_shuffle_epi8, _mm256_mask_shuffle_epi8, _mm256_maskz_shuffle_epi8.
  • Corrected descriptions and operations for *_sqrt_sd and *_sqrt_round_sd intrinsics.
  • Corrected operations for _mm512_mask2int intrinsics.
  • Corrected CPUIDs for _mm_undefined_* intrinsics.

Intel® Intrinsics Guide v3.3.14

01/12/2016

  • Corrected operations for *_cmpunord_* intrinsics.

Intel® Intrinsics Guide v3.3.13

12/02/2015

  • Clarified descriptions and operations for all intrinsics utilizing a bitwise AND NOT.
  • Corrected description and operation for _mm512_fmadd233_ps and _mm512_mask_fmadd233_ps.
  • Added AVX-512 versions of _mm512_mask2int and _mm512_int2mask.

Intel® Intrinsics Guide v3.3.12

09/28/2015

  • Corrected operations for multi-shift intrinsics.
  • Corrected description and operation of _mm_test_all_ones.
  • Corrected description for _mm512_sad_epu8.
  • Corrected operation for _mm256_mpsadbw_epu8.

Intel® Intrinsics Guide v3.3.11

07/27/2015

  • Corrected operations for fmsubadd intrinsics.

Intel® Intrinsics Guide v3.3.10

06/24/2015

  • Corrected ADC, ADCX, and SBB intrinsics.

Intel® Intrinsics Guide v3.3.9

06/15/2015

  • Corrected operations for variable shift intrinsics.

Intel® Intrinsics Guide v3.3.8

05/26/2015

  • Corrected headers for all AVX-512 intrinsics.

Intel® Intrinsics Guide v3.3.7

02/20/2015

  • Corrected operations for _mm_sha1rnds4_epu32, _mm_sha1nexte_epu32, and _mm_sha1msg2_epu32.

Intel® Intrinsics Guide v3.3.6

02/02/2015

  • Corrected operations for floating-point hsub intrinsics.

Intel® Intrinsics Guide v3.3.5

01/29/2015

  • Added missing _BitScan*, _bittest*, _mm256_extract_epi*, _mm256_insert_epi*, and _mm_clflushopt intrinsics.

Intel® Intrinsics Guide v3.3.4

01/13/2015

  • Corrected parameter names, descriptions, and operations for intrinsics with immediate parameters, to clarify they are always 8-bits.
  • Corrected description and operation for all pmaddwd intrinsics.

Intel® Intrinsics Guide v3.3.3

12/18/2014

  • Corrected description for _mm_maskmoveu_si128 and _mm_maskmove_si64.
  • Corrected operation for _mm512_[mask_]extload_* intrinsics.

Intel® Intrinsics Guide v3.3.2

12/10/2014

  • Corrected description for vpmaksmov intrinsics.
  • Corrected description for (v)pmaddwd intrinsics.

Intel® Intrinsics Guide v3.3.1

10/17/2014

  • Corrected category for *_mask_cmp_*_mask, *_test_*_mask, and *_testn_*_maks intrinsics.
  • Corrected description and operation for *_testn_*_maks intrinsics.
  • Added description and operation for _mm_testn_epi64_mask and _mm_test_epi64_mask.
  • Corrected typos in description of several getexp, packs, div, and broadcast intrinsics.
  • Corrected instructions for *_mask_permutex2var_* and *_mask2_permutex2var_* intrinsics.
  • Corrected for CPUID's for 128-bit and 256-bit lzcnt and conflict intrinsics.
  • Corrected description for all broadcastw and fpclass intrinsics.

Intel® Intrinsics Guide v3.3.0

09/29/2014

  • Added AVX-512IFMA52 and AVX-512VBMI intrinsics.

Intel® Intrinsics Guide v3.2.2

09/03/2014

  • Corrected _mm512_mask_permute4f128_epi32 operation.

Intel® Intrinsics Guide v3.2.1

07/24/2014

  • Corrected CPUIDs for _mm_broadcastmb_epi64, _mm256_broadcastmb_epi64, _mm_broadcastmw_epi32, _mm256_broadcastmw_epi32, and _mm_movm_epi8.

Intel® Intrinsics Guide v3.2.0

07/18/2014

  • Added AVX-512VL, AVX-512BW, and AVX-512DQ intrinsics.

Intel® Intrinsics Guide v3.1.9

06/18/2014

  • Re-classified all *_reduce_* intrinsics (except gmin and gmax) as both AVX-512 and KNC, which were previously classified as only AVX-512.

Intel® Intrinsics Guide v3.1.8

06/17/2014

  • Corrected instructions for _mm512_mask2int, _mm512_int2mask, _mm512_cvtfxpnt_round_adjustepi32_ps, _mm512_mask_mulhi_epu32, _mm512_mask_i32loscatter_epi64, _mm512_mask_subsetb_epi32, _mm_tzcnti_32, _mm_tzcnti_64, _mm_prefetch, _mm512_extload_*, and _mm512_mask_extload_*.
  • Re-classified 58 intrinsics as just AVX-512, which were previously classified as both AVX-512 and KNC (primarily broadcast intrinsics, and those containing __m128 or __m256 types).
  • Re-classified _mm512_log2_ps and _mm512_mask_log2_ps as KNC, which were previously classified as SVML.
  • Corrected parameters for _mm512_mask_prefetch_i32gather_ps, and re-classified as both AVX-512 and KNC.
  • Corrected description of _mm_sad_epu8.
  • Added _mm512_mask_prefetch_i32extgather_ps.
  • Added prefetchwt1 form of _mm_prefetch.

Intel® Intrinsics Guide v3.1.7

05/30/2014

  • Corrected instructions for _mm512_permute_pd, _mm512_permutevar_pd, and _mm512_permutevar_ps, which all use vpermilpx instructions rather than vpermpx.
  • Corrected descriptions for _mm*_xor_si* intrinsics.
  • Added missing _mm512_mask_prefetch_i32gather_ps intrinsic.
  • Re-classified _mm512_abs_pd, _mm512_abs_ps, _mm512_mask_abs_pd, and _mm512_mask_abs_ps intrinsics as both AVX-512 and KNC, which were previously classified as only KNC.
  • Switched to HTTPS.

Intel® Intrinsics Guide v3.1.6

03/21/2014

  • Corrected instructions for: _mm_sub_epi16, _mm512_cvtfxpnt_round_adjustps_epi32, _mm512_extpackstorelo_epi64, _mm512_mask_extpackstorelo_epi64, _mm512_extpackstorelo_pd, _mm512_mask_extpackstorelo_pd.
  • Added xsavec, xsaves, and xrstors intrinsics.

Intel® Intrinsics Guide v3.1.5

03/18/2014

  • Re-classified 342 intrinsics as both AVX-512 and KNC, which were previously classified as only AVX-512.
  • Added 18 missing KNC intrinsics, which previously existed in AVX-512 but have different intrinsic signatures or instructions encodings for KNC.
  • Corrected fmadd233 intrinsic descriptions and operations.
  • Corrected CPUID for VPTESTN* intrinsics to AVX512F.

Intel® Intrinsics Guide v3.1.4

02/12/2014

  • Corrected "hint" parameter description for prefetch scatter/gather intrinsics.
  • Corrected _mm512_prefetch_i32extgather_ps, _mm512_mask_prefetch_i32extscatter_ps, and _mm512_prefetch_i32extscatter_ps intrinsic descriptions and operations.

Intel® Intrinsics Guide v3.1.3

02/06/2014

  • Added AVX512F version of kortestw intrinsics.

Intel® Intrinsics Guide v3.1.2

01/28/2014

  • Updated throughput on Haswell for vblendpd/ps, vblendvp/ps, and vmulpd/ps.
  • Added performance data for _mm_alignr_epi8.
  • Resolved issues in Internet Explorer 8 and 9.
  • Added intro message.

Intel® Intrinsics Guide v3.1.1

12/19/2013

  • Fixed VEX-equivalent warning message.

Intel® Intrinsics Guide v3.1

12/18/2013

  • Added Knights Corner (KNC) intrinsics.
  • Added 512-bit SVML intrinsics.
  • Added instruction parameters for many intrinsics, including all AVX-512 intrinsics.
  • Added instruction latencies for many intrinsics.
  • Updated AVX-512 CPUID names.
  • Added feature flags for AVX-512(F,ER,PF,CD), SHA, and MPX.
  • Corrected descriptions, operations, parameters, and instructions for many intrinsics.

Intel® Intrinsics Guide v3.0.1

07/23/2013

  • Corrected operations for set and setr intrinsics.

Intel® Intrinsics Guide v3.0

07/17/2013

  • Added intrinsics for Intel® AVX-512, Intel® MPX, RDSEED, and ADX.
  • Added additional latency & throughput data up through 4th generation Intel® Core™ processor family.
  • Added 148 missing intrinsics, and corrected information for 96 intrinsics.

Intel® Intrinsics Guide v2.8.1

05/13/2013

  • Fixed description for _mm_move_ss.
  • Fixed parameters for _mm_max_epu32.
  • Replaced references of __int datatype with int.

Intel® Intrinsics Guide v2.8

02/06/2013

  • Updated descriptions and operations for all intrinsics.
  • Added additional latency & throughput data up through 3rd generation Intel® Core™ processor family.

Intel® Intrinsics Guide v2.7

11/28/2012

  • Added intrinsics for SVML, BMI1, BMI2, FXSR, INVPCID, LZCNT, POPCNT, RDRAND, RDTSCP, RTM, TSC, XSAVE, XSAVEOPT.
  • Added header and CPUID feature flag information for each intrinsic.

Product and Performance Information

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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.