New feature: DSE - Intelligent dead store?

[jcrodriguez1989]

If within a function, a variable is assigned multiple times, but just the last assignation is read, then the optimizer could keep just the last one.

For example:

foo <- function() {
  a <- 8
  a <- 8818
  return(a ^ 2)
}

Would be equivalent to:

foo <- function() {
  8
  a <- 8818
  return(a ^ 2)
}

[saxenism]

Hey @jcrodriguez1989 , I tried to implement this intelligent dead store elimination, please have a look at it here, https://github.com/hinduBale/intelligent_dead_store. If you deem fit, I can add it to the rco package along with some new tests.
Thanks!