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| <title>VINSERTI128 — Insert Packed Integer Values </title></head> |
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| <h1>VINSERTI128 — Insert Packed Integer Values</h1> |
| <table> |
| <tr> |
| <th>Opcode/Instruction</th> |
| <th>Op/En</th> |
| <th>64/32 -bit Mode</th> |
| <th>CPUID Feature Flag</th> |
| <th>Description</th></tr> |
| <tr> |
| <td> |
| <p>VEX.NDS.256.66.0F3A.W0 38 /r ib</p> |
| <p>VINSERTI128 <em>ymm1, ymm2, xmm3/m128, imm8</em></p></td> |
| <td>RVMI</td> |
| <td>V/V</td> |
| <td>AVX2</td> |
| <td>Insert 128-bits of integer data from <em>xmm3/mem </em>and the remaining values from <em>ymm2</em> into <em>ymm1.</em></td></tr></table> |
| <h3>Instruction Operand Encoding</h3> |
| <table> |
| <tr> |
| <td>Op/En</td> |
| <td>Operand 1</td> |
| <td>Operand 2</td> |
| <td>Operand 3</td> |
| <td>Operand 4</td></tr> |
| <tr> |
| <td>RVMI</td> |
| <td>ModRM:reg (w)</td> |
| <td>VEX.vvvv</td> |
| <td>ModRM:r/m (r)</td> |
| <td>Imm8</td></tr></table> |
| <h2>Description</h2> |
| <p>Performs an insertion of 128-bits of packed integer data from the second source operand (third operand) into an the destination operand (first operand) at a 128-bit offset from imm8[0]. The remaining portions of the destination are written by the corresponding fields of the first source operand (second operand). The second source operand can be either an XMM register or a 128-bit memory location.</p> |
| <p>The high 7 bits of the immediate are ignored.</p> |
| <p>VEX.L must be 1; an attempt to execute this instruction with VEX.L=0 will cause #UD.</p> |
| <h2>Operation</h2> |
| <p><strong>VINSERTI128</strong></p> |
| <pre>TEMP[255:0] ← SRC1[255:0] |
| CASE (imm8[0]) OF |
| 0: TEMP[127:0] ←SRC2[127:0] |
| 1: TEMP[255:128] ← SRC2[127:0] |
| ESAC |
| DEST ←TEMP</pre> |
| <h2>Intel C/C++ Compiler Intrinsic Equivalent</h2> |
| <p>VINSERTI128: __m256i _mm256_inserti128_si256 (__m256i a, __m128i b, int offset);</p> |
| <h2>SIMD Floating-Point Exceptions</h2> |
| <p>None</p> |
| <h2>Other Exceptions</h2> |
| <p>See Exceptions Type 6; additionally</p> |
| <table class="exception-table"> |
| <tr> |
| <td>#UD</td> |
| <td> |
| <p>If VEX.L = 0,</p> |
| <p>If VEX.W = 1.</p></td></tr></table></body></html> |