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VPERMI2PS

This instruction selects four single-precision floating-point values from two source operands based on an immediate value and stores the result in the destination operand. The immediate value specifies the indices of the elements to be selected from the first and second source operands.

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

DO NOT support LOCK

This instruction is available only in 64-bit mode or compatibility mode. It requires the AVX support feature.

The destination register MUST NOT be one of the source registers if memory operands are used, to avoid potential undefined behavior in some microarchitectures. If the destination is the same as a source register, the operation is performed atomically relative to the register state.