x86-64.net

Instruction

VCVTTPD2DQ

Converts packed doubles to signed doublewords, truncating toward zero.

Extensions
Forms
10 (4 VEX, 6 EVEX)
Data
Intel XED v2026.08.23

Forms

Every encoding of VCVTTPD2DQ that Intel XED knows, one row per XED instruction form (iform). How to read the notation.
InstructionEncodingRequires
VCVTTPD2DQ xmm, m128 VCVTTPD2DQ_XMMdq_MEMdqVEX.128.66.0F.WIG E6 /rAVX
VCVTTPD2DQ xmm, xmm VCVTTPD2DQ_XMMdq_XMMdqVEX.128.66.0F.WIG E6 /rAVX
VCVTTPD2DQ xmm, m256 VCVTTPD2DQ_XMMdq_MEMqqVEX.256.66.0F.WIG E6 /rAVX
VCVTTPD2DQ xmm, ymm VCVTTPD2DQ_XMMdq_YMMqqVEX.256.66.0F.WIG E6 /rAVX
VCVTTPD2DQ ymm {k}{z}, zmm, {sae} VCVTTPD2DQ_YMMi32_MASKmskw_ZMMf64_AVX512_VL512EVEX.512.66.0F.W1 E6 /rAVX10.1 or AVX512F
VCVTTPD2DQ ymm {k}{z}, m512/m64bcst VCVTTPD2DQ_YMMi32_MASKmskw_MEMf64_AVX512_VL512EVEX.512.66.0F.W1 E6 /rAVX10.1 or AVX512F
VCVTTPD2DQ xmm {k}{z}, xmm VCVTTPD2DQ_XMMi32_MASKmskw_XMMf64_AVX512_VL128EVEX.128.66.0F.W1 E6 /rAVX10.1 or AVX512F + AVX512VL
VCVTTPD2DQ xmm {k}{z}, m128/m64bcst VCVTTPD2DQ_XMMi32_MASKmskw_MEMf64_AVX512_VL128EVEX.128.66.0F.W1 E6 /rAVX10.1 or AVX512F + AVX512VL
VCVTTPD2DQ xmm {k}{z}, ymm VCVTTPD2DQ_XMMi32_MASKmskw_YMMf64_AVX512_VL256EVEX.256.66.0F.W1 E6 /rAVX10.1 or AVX512F + AVX512VL
VCVTTPD2DQ xmm {k}{z}, m256/m64bcst VCVTTPD2DQ_XMMi32_MASKmskw_MEMf64_AVX512_VL256EVEX.256.66.0F.W1 E6 /rAVX10.1 or AVX512F + AVX512VL

Intrinsics

The C intrinsics of Clang 23.1.2 that compile to VCVTTPD2DQ, each with the form it compiles to and the Clang options it needs. The forms come from compiling every intrinsic and decoding the result with Intel XED; all intrinsics A–Z explains the method.

IntrinsicCompiles to
_mm_cvttpd_epi32 __m128i _mm_cvttpd_epi32(__m128d __a)

VCVTTPD2DQ xmm, xmm VEX.128 -mavxwith AVX enabled

_mm_mask_cvttpd_epi32 __m128i _mm_mask_cvttpd_epi32(__m128i __W, __mmask8 __U, __m128d __A)

VCVTTPD2DQ xmm {k}, xmm EVEX.128 -mavx512vl

_mm_maskz_cvttpd_epi32 __m128i _mm_maskz_cvttpd_epi32(__mmask8 __U, __m128d __A)

VCVTTPD2DQ xmm {k}{z}, xmm EVEX.128 -mavx512vl

_mm256_cvttpd_epi32 __m128i _mm256_cvttpd_epi32(__m256d __a)

VCVTTPD2DQ xmm, ymm VEX.256 -mavx

_mm256_mask_cvttpd_epi32 __m128i _mm256_mask_cvttpd_epi32(__m128i __W, __mmask8 __U, __m256d __A)

VCVTTPD2DQ xmm {k}, ymm EVEX.256 -mavx512vl

_mm256_maskz_cvttpd_epi32 __m128i _mm256_maskz_cvttpd_epi32(__mmask8 __U, __m256d __A)

VCVTTPD2DQ xmm {k}{z}, ymm EVEX.256 -mavx512vl

_mm512_cvtt_roundpd_epi32 __m256i _mm512_cvtt_roundpd_epi32(__m512d A, const int R)

VCVTTPD2DQ ymm, zmm, {sae} EVEX.512 -mavx512f

_mm512_cvttpd_epi32 __m256i _mm512_cvttpd_epi32(__m512d __a)

VCVTTPD2DQ ymm, zmm EVEX.512 -mavx512f

_mm512_mask_cvtt_roundpd_epi32 __m256i _mm512_mask_cvtt_roundpd_epi32(__m256i W, __mmask8 U, __m512d A, const int R)

VCVTTPD2DQ ymm {k}, zmm, {sae} EVEX.512 -mavx512f

_mm512_mask_cvttpd_epi32 __m256i _mm512_mask_cvttpd_epi32(__m256i __W, __mmask8 __U, __m512d __A)

VCVTTPD2DQ ymm {k}, zmm EVEX.512 -mavx512f

_mm512_maskz_cvtt_roundpd_epi32 __m256i _mm512_maskz_cvtt_roundpd_epi32(__mmask8 U, __m512d A, const int R)

VCVTTPD2DQ ymm {k}{z}, zmm, {sae} EVEX.512 -mavx512f

_mm512_maskz_cvttpd_epi32 __m256i _mm512_maskz_cvttpd_epi32(__mmask8 __U, __m512d __A)

VCVTTPD2DQ ymm {k}{z}, zmm EVEX.512 -mavx512f

CPUID and processors

Each form belongs to an XED ISA set. A form can be used when the processor reports every CPUID bit of one of its ISA set's alternatives.

CPUID requirements and processors of the XED ISA sets above. Alternatives are separated by “or”; processors follow XED’s chip model, which covers AMD processors up to Zen 2.
ISA setCPUIDProcessors in XED
AVX

AVX
CPUID.01H:ECX[28] AVX

Sandy Bridge, Ivy Bridge, Haswell, Broadwell, Skylake, Comet Lake, Cannon Lake, Ice Lake (client), Tiger Lake, Alder Lake, Arrow Lake, Panther Lake, Nova Lake, Skylake-SP, Cascade Lake, Cooper Lake, Ice Lake (server), Sapphire Rapids, Emerald Rapids, Granite Rapids, Diamond Rapids, Sierra Forest, Clearwater Forest, Knights Landing, Knights Mill, Bulldozer, Piledriver, Zen, Zen+, Zen 2
AVX512F_512

AVX10.1
CPUID.(EAX=07H,ECX=1):EDX[19] AVX10
CPUID.(EAX=24H,ECX=0):EBX[7:0] ≥ 1 AVX10 version

or

AVX512F
CPUID.(EAX=07H,ECX=0):EBX[16] AVX512F

Cannon Lake, Ice Lake (client), Tiger Lake, Nova Lake, Skylake-SP, Cascade Lake, Cooper Lake, Ice Lake (server), Sapphire Rapids, Emerald Rapids, Granite Rapids, Diamond Rapids, Knights Landing, Knights Mill
AVX512F_128

AVX10.1
CPUID.(EAX=07H,ECX=1):EDX[19] AVX10
CPUID.(EAX=24H,ECX=0):EBX[7:0] ≥ 1 AVX10 version

or

AVX512F + AVX512VL
CPUID.(EAX=07H,ECX=0):EBX[16] AVX512F
CPUID.(EAX=07H,ECX=0):EBX[31] AVX512VL

Cannon Lake, Ice Lake (client), Tiger Lake, Nova Lake, Skylake-SP, Cascade Lake, Cooper Lake, Ice Lake (server), Sapphire Rapids, Emerald Rapids, Granite Rapids, Diamond Rapids
AVX512F_256

AVX10.1
CPUID.(EAX=07H,ECX=1):EDX[19] AVX10
CPUID.(EAX=24H,ECX=0):EBX[7:0] ≥ 1 AVX10 version

or

AVX512F + AVX512VL
CPUID.(EAX=07H,ECX=0):EBX[16] AVX512F
CPUID.(EAX=07H,ECX=0):EBX[31] AVX512VL

Cannon Lake, Ice Lake (client), Tiger Lake, Nova Lake, Skylake-SP, Cascade Lake, Cooper Lake, Ice Lake (server), Sapphire Rapids, Emerald Rapids, Granite Rapids, Diamond Rapids

More AVX10.1 instructions

All 686 AVX10.1 instructions

Sources

  1. Intel XED v2026.08.23 (commit 0bcb6237345c): forms, encodings, ISA sets, CPUID bits and chip model.
  2. Clang's x86 intrinsic headers, LLVM 23.1.2 (commit 85ac56026243): the intrinsics, their signatures and doc comments, and the Clang of that release, which compiled each of them.
  3. Intel Advanced Vector Extensions 10.2 Architecture Specification, revision 6.0 (361050-006, January 2026)

The tables are derived from Intel XED, Copyright Intel Corporation, licensed under the Apache License 2.0; x86-64.net converted and reformatted them. The intrinsics and their signatures come from Clang, part of the LLVM Project, licensed under the Apache License 2.0 with LLVM Exceptions. The text is our own.