| Opcode/Instruction | Op / En | 64/32 bit Mode Support | CPUID Feature Flag | Description |
|---|---|---|---|---|
|
0F 12 /r MOVLPS xmm1, m64 |
RM | V/V | SSE | Move two packed single-precision floating-point values from m64 to low quadword of xmm1. |
|
VEX.NDS.128.0F.WIG 12 /r VMOVLPS xmm2, xmm1, m64 |
RVM | V/V | AVX | Merge two packed single-precision floating-point values from m64 and the high quadword of xmm1. |
|
EVEX.NDS.128.0F.W0 12 /r VMOVLPS xmm2, xmm1, m64 |
T2 | V/V | AVX512F | Merge two packed single-precision floating-point values from m64 and the high quadword of xmm1. |
|
0F 13/r MOVLPS m64, xmm1 |
MR | V/V | SSE | Move two packed single-precision floating-point values from low quadword of xmm1 to m64. |
|
VEX.128.0F.WIG 13/r VMOVLPS m64, xmm1 |
MR | V/V | AVX | Move two packed single-precision floating-point values from low quadword of xmm1 to m64. |
|
EVEX.128.0F.W0 13/r VMOVLPS m64, xmm1 |
T2-MR | V/V | AVX512F | Move two packed single-precision floating-point values from low quadword of xmm1 to m64. |
| 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 | ModRM:r/m (r) | NA |
| MR | ModRM:r/m (w) | ModRM:reg (r) | NA | NA |
| T2 | ModRM:reg (w) | EVEX.vvvv | ModRM:r/m (r) | NA |
| T2-MR | ModRM:r/m (w) | ModRM:reg (r) | NA | NA |
Description
This instruction cannot be used for register to register or memory to memory moves.
128-bit Legacy SSE load:
Moves two packed single-precision floating-point values from the source 64-bit memory operand and stores them in the low 64-bits of the destination XMM register. The upper 64bits of the XMM register are preserved. Bits (MAX_VL-1:128) of the corresponding destination register are preserved.
VEX.128 & EVEX encoded load:
Loads two packed single-precision floating-point values from the source 64-bit memory operand (the third operand), merges them with the upper 64-bits of the first source operand (the second operand), and stores them in the low 128-bits of the destination register (the first operand). Bits (MAX_VL-1:128) of the corresponding desti-nation register are zeroed.
128-bit store:
Loads two packed single-precision floating-point values from the low 64-bits of the XMM register source (second operand) to the 64-bit memory location (first operand).
Note: VMOVLPS (store) (VEX.128.0F 13 /r) is legal and has the same behavior as the existing 0F 13 store. For VMOVLPS (store) VEX.vvvv and EVEX.vvvv are reserved and must be 1111b otherwise instruction will #UD.
If VMOVLPS is encoded with VEX.L or EVEX.L’L= 1, an attempt to execute the instruction encoded with VEX.L or EVEX.L’L= 1 will cause an #UD exception.
Operation
MOVLPS (128-bit Legacy SSE load)
DEST[63:0] (cid:197) SRC[63:0]
DEST[MAX_VL-1:64] (Unmodified)
VMOVLPS (VEX.128 & EVEX encoded load)
DEST[63:0] (cid:197) SRC2[63:0]
DEST[127:64] (cid:197) SRC1[127:64]
DEST[MAX_VL-1:128] (cid:197) 0
VMOVLPS (store)
DEST[63:0] (cid:197) SRC[63:0]
Intel C/C++ Compiler Intrinsic Equivalent
MOVLPS __m128 _mm_loadl_pi ( __m128 a, __m64 *p)
MOVLPS void _mm_storel_pi (__m64 *p, __m128 a)
SIMD Floating-Point Exceptions
None
Other Exceptions
Non-EVEX-encoded instruction, see Exceptions Type 5; additionally
| #UD |
If VEX.L = 1. EVEX-encoded instruction, see Exceptions Type E9NF. |