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INSERTPS

Inserts two packed single-precision floating-point values from the source operand into the destination operand. The immediate value determines which elements are inserted and whether the insertion is performed as a replacement or a merge.

The table below covers what the source and destinations can be.

DO NOT support LOCK

This instruction is available in 64-bit mode and compatibility mode. It requires SSE support.

The immediate value MUST be a 8-bit immediate; however, only the lower 4 bits are used. Bits 7:4 are MUST be zero. If the immediate value is not correctly formatted, the instruction behavior is undefined.

The instruction does NOT affect any EFLAGS flags. It does NOT trigger floating-point exceptions such as #D, #O, #U, or #P. Memory operands MUST be aligned to 16 bytes if using aligned move variants; otherwise, a general-protection fault may occur depending on the CPU's alignment check settings.