x86-64.net

Instruction

VPEXTRW

Copies the word selected by an immediate from an XMM register to a general-purpose register or memory.

Extensions
Forms
6 (3 VEX, 3 EVEX)
Data
Intel XED v2026.08.23

Forms

Every encoding of VPEXTRW that Intel XED knows, one row per XED instruction form (iform). How to read the notation.
InstructionEncodingRequires
VPEXTRW m16, xmm, imm8 VPEXTRW_MEMw_XMMdq_IMMbVEX.128.66.0F3A.WIG 15 /r ibAVX
VPEXTRW r32, xmm, imm8 VPEXTRW_GPR32d_XMMdq_IMMb_15VEX.128.66.0F3A.WIG 15 /r ibAVX
VPEXTRW r32, xmm, imm8 VPEXTRW_GPR32d_XMMdq_IMMb_C5VEX.128.66.0F.WIG C5 /r ibAVX
VPEXTRW r32, xmm, imm8 VPEXTRW_GPR32u16_XMMu16_IMM8_AVX512EVEX.128.66.0F3A.WIG 15 /r ibAVX10.1 or AVX512BW
VPEXTRW m16, xmm, imm8 VPEXTRW_MEMu16_XMMu16_IMM8_AVX512EVEX.128.66.0F3A.WIG 15 /r ibAVX10.1 or AVX512BW
VPEXTRW r32, xmm, imm8 VPEXTRW_GPR32u16_XMMu16_IMM8_AVX512_C5EVEX.128.66.0F.WIG C5 /r ibAVX10.1 or AVX512BW

Intrinsics

The C intrinsics of Clang 23.1.2 that compile to VPEXTRW, 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_extract_epi16 int _mm_extract_epi16(__m128i a, const int imm)

VPEXTRW r32, xmm, imm8 VEX.128 -mavxwith AVX enabled

_mm_extract_pi16 int _mm_extract_pi16(__m64 a, const int n)

VPEXTRW r32, xmm, imm8 VEX.128 -mavxwith AVX enabled

_mm_store_sbh void _mm_store_sbh(void *__dp, __m128bh __a)

VPEXTRW m16, xmm, imm8 VEX.128 -mavx10.2

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
AVX512BW_128N

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

or

AVX512BW
CPUID.(EAX=07H,ECX=0):EBX[30] AVX512BW

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.