X86: Extend mov2int and mov2fp so they can support insert and extract instructions.
X86: Extend mov2int and mov2fp so they can support insert and extract instructions.

andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin