This micro does not have move immediate 32 value into the register, only 16 bits. 2 instructions are faster and shorter than storing the value in memory and load it into the register from memory.

That's the reason why you have 2 instructions.

This micro does not have the move immediate 32-bit value into the register, only 16 bits. 2 instructions are faster and shorter than storing the value in memory and loading it into the register from memory.

That's the reason why you have 2 instructions.