What is the minimum number instructions required to swap Odd and even bits in an integer

What is the minimum number instructions required to swap Odd and even bits in an integer
Eg
1) let the number be A = 10101111
2) A1 = A & 10101010 = 10101010
3) A2 = A & 01010101 = 00000101
4) A1 = A1 >> 1 = 01010101
5) A2 = A2 << 1 = 00001010
6) Answer = A1 | A2 = 01011111
so u require 5 instructions