Upgrade implementation for constant propagation issue
fixed bug in ConstPropVisitor
fixed bug in ConstPropVisitor
fixed bug in constPropVisito
make a FrameOptimization issue, implements a class ir.optimization.FrameOptimization that re-assign offset for each local variable in a block and assign offset for each block, for make it was necessary generate information in TACVisitor and generate instructions BlockBegin and BlockEnd for delimitate when start and end block in three address code
Add implementation of FrameOptimization