MOVHPS—Move High Packed Single-Precision Floating-Point Values

Opcode/Instruction Op / En 64/32 bit Mode Support CPUID Feature Flag Description

0F 16 /r

MOVHPS xmm1, m64

RM V/V SSE Move two packed single-precision floating-point values from m64 to high quadword of xmm1.

VEX.NDS.128.0F.WIG 16 /r

VMOVHPS xmm2, xmm1, m64

RVM V/V AVX Merge two packed single-precision floating-point values from m64 and the low quadword of xmm1.

EVEX.NDS.128.0F.W0 16 /r

VMOVHPS xmm2, xmm1, m64

T2 V/V AVX512F Merge two packed single-precision floating-point values from m64 and the low quadword of xmm1.

0F 17 /r

MOVHPS m64, xmm1

MR V/V SSE Move two packed single-precision floating-point values from high quadword of xmm1 to m64.

VEX.128.0F.WIG 17 /r

VMOVHPS m64, xmm1

MR V/V AVX Move two packed single-precision floating-point values from high quadword of xmm1 to m64.

EVEX.128.0F.W0 17 /r

VMOVHPS m64, xmm1

T2-MR V/V AVX512F Move two packed single-precision floating-point values from high quadword of xmm1 to m64.

Instruction Operand Encoding

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 high 64-bits of the destination XMM register. The lower 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 single-precision floating-point values from the source 64-bit memory operand (the third operand) and stores it in the upper 64-bits of the destination XMM register (first operand). The low 64-bits from the first source operand (the second operand) are copied to the lower 64-bits of the destination. Bits (MAX_VL-1:128) of the corre-sponding destination register are zeroed.

128-bit store:

Stores two packed single-precision floating-point values from the high 64-bits of the XMM register source (second operand) to the 64-bit memory location (first operand).

Note: VMOVHPS (store) (VEX.NDS.128.0F 17 /r) is legal and has the same behavior as the existing 0F 17 store.

For VMOVHPS (store) VEX.vvvv and EVEX.vvvv are reserved and must be 1111b otherwise instruction will #UD.

If VMOVHPS 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

MOVHPS (128-bit Legacy SSE load)

DEST[63:0] (Unmodified)

DEST[127:64] (cid:197) SRC[63:0]

DEST[MAX_VL-1:128] (Unmodified)

VMOVHPS (VEX.128 and EVEX encoded load)

DEST[63:0] (cid:197) SRC1[63:0]

DEST[127:64] (cid:197) SRC2[63:0]

DEST[MAX_VL-1:128] (cid:197) 0

VMOVHPS (store)

DEST[63:0] (cid:197) SRC[127:64]

Intel C/C++ Compiler Intrinsic Equivalent

MOVHPS __m128 _mm_loadh_pi ( __m128 a, __m64 *p)

MOVHPS void _mm_storeh_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.