x86-64.net

Instruction

VPMOVSXWD

Sign-extends packed words to doublewords.

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

Forms

Every encoding of VPMOVSXWD that Intel XED knows, one row per XED instruction form (iform). How to read the notation.
InstructionEncodingRequires
VPMOVSXWD xmm, xmm VPMOVSXWD_XMMdq_XMMqVEX.128.66.0F38.WIG 23 /rAVX
VPMOVSXWD xmm, m64 VPMOVSXWD_XMMdq_MEMqVEX.128.66.0F38.WIG 23 /rAVX
VPMOVSXWD ymm, xmm VPMOVSXWD_YMMqq_XMMdqVEX.256.66.0F38.WIG 23 /rAVX2
VPMOVSXWD ymm, m128 VPMOVSXWD_YMMqq_MEMdqVEX.256.66.0F38.WIG 23 /rAVX2
VPMOVSXWD zmm {k}{z}, ymm VPMOVSXWD_ZMMi32_MASKmskw_YMMi16_AVX512EVEX.512.66.0F38.WIG 23 /rAVX10.1 or AVX512F
VPMOVSXWD zmm {k}{z}, m256 VPMOVSXWD_ZMMi32_MASKmskw_MEMi16_AVX512EVEX.512.66.0F38.WIG 23 /rAVX10.1 or AVX512F
VPMOVSXWD xmm {k}{z}, xmm VPMOVSXWD_XMMi32_MASKmskw_XMMi16_AVX512EVEX.128.66.0F38.WIG 23 /rAVX10.1 or AVX512F + AVX512VL
VPMOVSXWD xmm {k}{z}, m64 VPMOVSXWD_XMMi32_MASKmskw_MEMi16_AVX512EVEX.128.66.0F38.WIG 23 /rAVX10.1 or AVX512F + AVX512VL
VPMOVSXWD ymm {k}{z}, xmm VPMOVSXWD_YMMi32_MASKmskw_XMMi16_AVX512EVEX.256.66.0F38.WIG 23 /rAVX10.1 or AVX512F + AVX512VL
VPMOVSXWD ymm {k}{z}, m128 VPMOVSXWD_YMMi32_MASKmskw_MEMi16_AVX512EVEX.256.66.0F38.WIG 23 /rAVX10.1 or AVX512F + AVX512VL

Intrinsics

The C intrinsics of Clang 23.1.2 that compile to VPMOVSXWD, 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_cvtepi16_epi32 __m128i _mm_cvtepi16_epi32(__m128i __V)

VPMOVSXWD xmm, xmm VEX.128 -mavxwith AVX enabled

_mm_mask_cvtepi16_epi32 __m128i _mm_mask_cvtepi16_epi32(__m128i __W, __mmask8 __U, __m128i __A)

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

_mm_maskz_cvtepi16_epi32 __m128i _mm_maskz_cvtepi16_epi32(__mmask8 __U, __m128i __A)

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

_mm256_cvtepi16_epi32 __m256i _mm256_cvtepi16_epi32(__m128i __V)

VPMOVSXWD ymm, xmm VEX.256 -mavx2

_mm256_mask_cvtepi16_epi32 __m256i _mm256_mask_cvtepi16_epi32(__m256i __W, __mmask8 __U, __m128i __A)

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

_mm256_maskz_cvtepi16_epi32 __m256i _mm256_maskz_cvtepi16_epi32(__mmask8 __U, __m128i __A)

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

_mm512_cvtepi16_epi32 __m512i _mm512_cvtepi16_epi32(__m256i __A)

VPMOVSXWD zmm, ymm EVEX.512 -mavx512f

_mm512_mask_cvtepi16_epi32 __m512i _mm512_mask_cvtepi16_epi32(__m512i __W, __mmask16 __U, __m256i __A)

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

_mm512_maskz_cvtepi16_epi32 __m512i _mm512_maskz_cvtepi16_epi32(__mmask16 __U, __m256i __A)

VPMOVSXWD zmm {k}{z}, ymm 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
AVX2

AVX2
CPUID.(EAX=07H,ECX=0):EBX[5] AVX2

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, 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.