x86 Instruction Set Reference

# MOVHLPS

# Move Packed Single-Precision Floating-Point Values High to Low

Opcode Mnemonic Description
0F 12 /r MOVHLPS xmm1, xmm2 Move two packed single-precision floating-point values from high quadword of xmm2 to low quadword of xmm1.

# Description

Moves two packed single-precision floating-point values from the high quadword of the source operand (second operand) to the low quadword of the destination operand (first operand). The high quadword of the destination operand is left unchanged.

# Operation

Destination[0..63] = Source[64..127];
//Destination[64..127] unchanged
1
2
3

# SIMD Floating-Point Exceptions

None.

# Protected Mode Exceptions
#NM If TS in CR0 is set.
#NM If TS in CR0 is set.

# Real-Address Mode Exceptions

Same exceptions as in Protected Mode.

# Virtual-8086 Mode Exceptions

Same exceptions as in Protected Mode.

Instruction Latency Throughput Execution Unit
CPUID 0F3n/0F2n 0F3n/0F2n 0F2n
MOVHLPS xmm, xmm 6/6 2/2 MMX_SHFT

← MOVHPD →