===== AST after parser =====
f():
TreeList
  IfBranch
    UnresolvedReference cond1
    TreeList
      BinaryOperation Declaration
        UnresolvedReference a
        MathematicalConstant 1
      IfBranch
        UnresolvedReference cond2
        TreeList
          BinaryOperation Declaration
            UnresolvedReference b
            UnresolvedReference a
      ElseIfBranch Else
        TreeList
          BinaryOperation Declaration
            UnresolvedReference b
            MathematicalConstant 3
  ElseIfBranch Else
    TreeList
      BinaryOperation Declaration
        UnresolvedReference b
        MathematicalConstant 4
  ReturnNode
    UnresolvedReference b

===== AST after function-call-canonicalization =====
f():
TreeList
  IfBranch
    UnresolvedReference cond1
    TreeList
      BinaryOperation Declaration
        UnresolvedReference a
        MathematicalConstant 1
      IfBranch
        UnresolvedReference cond2
        TreeList
          BinaryOperation Declaration
            UnresolvedReference b
            UnresolvedReference a
      ElseIfBranch Else
        TreeList
          BinaryOperation Declaration
            UnresolvedReference b
            MathematicalConstant 3
  ElseIfBranch Else
    TreeList
      BinaryOperation Declaration
        UnresolvedReference b
        MathematicalConstant 4
  ReturnNode
    UnresolvedReference b

===== AST after if-branch-merging =====
f():
TreeList
  IfElseIfChain
    UnresolvedReference cond1
    TreeList
      BinaryOperation Declaration
        UnresolvedReference a
        MathematicalConstant 1
      IfElseIfChain
        UnresolvedReference cond2
        TreeList
          BinaryOperation Declaration
            UnresolvedReference b
            UnresolvedReference a
        TreeList
          BinaryOperation Declaration
            UnresolvedReference b
            MathematicalConstant 3
    TreeList
      BinaryOperation Declaration
        UnresolvedReference b
        MathematicalConstant 4
  ReturnNode
    UnresolvedReference b

===== AST after reference-resolving =====
f():
TreeList
  IfElseIfChain
    UnresolvedReference cond1
    TreeList
      BinaryOperation Declaration
        Var a
        MathematicalConstant 1
      IfElseIfChain
        UnresolvedReference cond2
        TreeList
          BinaryOperation Declaration
            Var b
            Var a
        TreeList
          BinaryOperation Declaration
            Var b
            MathematicalConstant 3
    TreeList
      BinaryOperation Declaration
        Var b
        MathematicalConstant 4
  ReturnNode
    Var b

===== AST after cfg-building =====
f():
TreeList
  IfElseIfChain
    UnresolvedReference cond1
    TreeList
      BinaryOperation Declaration
        Var a
        MathematicalConstant 1
      IfElseIfChain
        UnresolvedReference cond2
        TreeList
          BinaryOperation Declaration
            Var b
            Var a
        TreeList
          BinaryOperation Declaration
            Var b
            MathematicalConstant 3
    TreeList
      BinaryOperation Declaration
        Var b
        MathematicalConstant 4
  ReturnNode
    Var b

===== CFG after cfg-building =====
f():
0:
ControlFlowBranch true=3 false=7
  UnresolvedReference cond1

1:
ControlFlowFunctionReturn
  Var $return

2:
BinaryOperation Assignment
  Var $return
  Var b
ControlFlowJump jump=1

3:
BinaryOperation Declaration
  Var a
  MathematicalConstant 1
ControlFlowBranch true=5 false=6
  UnresolvedReference cond2

4:
ControlFlowJump jump=2

5:
BinaryOperation Declaration
  Var b
  Var a
ControlFlowJump jump=4

6:
BinaryOperation Declaration
  Var b
  MathematicalConstant 3
ControlFlowJump jump=4

7:
BinaryOperation Declaration
  Var b
  MathematicalConstant 4
ControlFlowJump jump=2

8:
BinaryOperation Assignment
  Var $return
  Error ""
ControlFlowJump jump=1

===== AST after cfg-simplification =====
f():
TreeList
  IfElseIfChain
    UnresolvedReference cond1
    TreeList
      BinaryOperation Declaration
        Var a
        MathematicalConstant 1
      IfElseIfChain
        UnresolvedReference cond2
        TreeList
          BinaryOperation Declaration
            Var b
            Var a
        TreeList
          BinaryOperation Declaration
            Var b
            MathematicalConstant 3
    TreeList
      BinaryOperation Declaration
        Var b
        MathematicalConstant 4
  ReturnNode
    Var b

===== CFG after cfg-simplification =====
f():
0:
ControlFlowBranch true=3 false=6
  UnresolvedReference cond1

1:
ControlFlowFunctionReturn
  Var $return

2:
BinaryOperation Assignment
  Var $return
  Var b
ControlFlowJump jump=1

3:
BinaryOperation Declaration
  Var a
  MathematicalConstant 1
ControlFlowBranch true=4 false=5
  UnresolvedReference cond2

4:
BinaryOperation Declaration
  Var b
  Var a
ControlFlowJump jump=2

5:
BinaryOperation Declaration
  Var b
  MathematicalConstant 3
ControlFlowJump jump=2

6:
BinaryOperation Declaration
  Var b
  MathematicalConstant 4
ControlFlowJump jump=2