So if they use a 5-bit number, they can just stick your second operand into that slot after it's been ANDed with 31 (which might even be implicit in how the x86 shift instructions work). To do otherwise would require them to branch (just like you did in your solution).
So if they use a 5-bit number, they can just stick your second operand into that slot after it's been ANDed with 31 (which might even be implicit in how the x86 shift instructions work). To do otherwise would require them to branch (just like you did in your solution).