2019.2.3

2019.2.2

Implement cloning of SSA programs

This was intended to improve the performance of computing both a naive
and a proper SSA form. However, cloning, even with all the unsafe
code, proved to be slower than just creating two separate programs
from the AST.

Implement ineffassign using go/cfg

Discarded as go/cfg's graph cannot correctly model select statements
or loop variables. We managed to work around select statements, but
can't work around loop variables.

Version 2019.2.1

Version 2019.2.1

Version 2019.2

Version 2019.2