swift

5a3ab6ee - Swift Optimizer: add simplifications for `destructure_struct` and `destructure_tuple`

Swift Optimizer: add simplifications for `destructure_struct` and `destructure_tuple` Eliminate the redundant instruction pair ``` %t = tuple (%0, %1, %2) (%3, %4, %5) = destructure_tuple %t ``` and replace the results %3, %4, %5 with %0, %1, %2, respectively. The same for structs.