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VPBLENDMD

Selects elements from two source operands based on a mask specified by an immediate. For each 64-bit element, if the corresponding bit in the immediate is 1, the element from the second source is selected; if the bit is 0, the element from the first source is selected.

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

DO NOT support LOCK

This instruction is only available in 64-bit mode. It requires the AVX instruction set.

The immediate operand MUST be a byte. If the vector length (determined by the register size) exceeds the number of 64-bit elements that can be indexed by the immediate, the remaining elements of the destination register shall remain unchanged. Ensure that the destination register is not used as a source if the immediate does not cover all elements and previous data must be preserved.