| Opcode/Instruction | Op/En | 64/32 bit Mode Support | CPUID Feature Flag | Description |
| 0F DB /r1 PAND mm, mm/m64 | RM | V/V | MMX | Bitwise AND mm/m64 and mm. |
| 66 0F DB /r PAND xmm1, xmm2/m128 | RM | V/V | SSE2 | Bitwise AND of xmm2/m128 and xmm1. |
| VEX.NDS.128.66.0F.WIG DB /r VPAND xmm1, xmm2, xmm3/m128 | RVM | V/V | AVX | Bitwise AND of xmm3/m128 and xmm. |
| VEX.NDS.256.66.0F.WIG DB /r VPAND ymm1, ymm2, ymm3/.m256 | RVM | V/V | AVX2 | Bitwise AND of ymm2, and ymm3/m256 and store result in ymm1. |
Notes: 1. See note in Section 2.4, “Instruction Exception Specification” in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2A and Section 22.25.3, “Exception Conditions of Legacy SIMD Instructions Operating on MMX Registers” in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A.
| Op/En | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
| RM | ModRM:reg (r, w) | ModRM:r/m (r) | NA | NA |
| RVM | ModRM:reg (w) | VEX.vvvv (r) | ModRM:r/m (r) | NA |
Performs a bitwise logical AND operation on the first source operand and second source operand and stores the result in the destination operand. Each bit of the result is set to 1 if the corresponding bits of the first and second operands are 1, otherwise it is set to 0.
In 64-bit mode, using a REX prefix in the form of REX.R permits this instruction to access additional registers (XMM8-XMM15).
Legacy SSE instructions: The source operand can be an MMX technology register or a 64-bit memory location. The destination operand can be an MMX technology register.
128-bit Legacy SSE version: The first source operand is an XMM register. The second operand can be an XMM register or a 128-bit memory location. The destination is not distinct from the first source XMM register and the upper bits (VLMAX-1:128) of the corresponding YMM register destination are unmodified. VEX.128 encoded version: The first source operand is an XMM register. The second source operand is an XMM register or 128-bit memory location. The destination operand is an XMM register. The upper bits (VLMAX-1:128) of the corresponding YMM register destination are zeroed. VEX.256 encoded version: The first source operand is a YMM register. The second source operand is a YMM register or a 256-bit memory location. The destination operand is a YMM register.
Note: VEX.L must be 0, otherwise the instruction will #UD.
PAND (128-bit Legacy SSE version) DEST ← DEST AND SRC DEST[VLMAX-1:128] (Unmodified) VPAND (VEX.128 encoded version) DEST ← SRC1 AND SRC2 DEST[VLMAX-1:128] ← 0 VPAND (VEX.256 encoded instruction) DEST[255:0] ← (SRC1[255:0] AND SRC2[255:0])
| PAND: | __m64 _mm_and_si64 (__m64 m1, __m64 m2) |
| (V)PAND: | __m128i _mm_and_si128 ( __m128i a, __m128i b) |
| VPAND: | __m256i _mm256_and_si256 ( __m256i a, __m256i b) |
None.
None.
See Exceptions Type 4; additionally
| #UD | If VEX.L = 1. |