d14bb7e91e
In a nutshell, when we understand that the expression is a function
call (this happens at '(' after an expression), stop parsing expression
and start parsing function arguments. This makes
`FunctionCallCanonicalizationPass` and the workaround for zero argument
function calls obsolete.
360 lines
6.4 KiB
Text
360 lines
6.4 KiB
Text
===== AST after parser =====
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f(cond1, cond2):
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TreeList
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IfBranch
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UnresolvedReference cond1
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TreeList
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BinaryOperation Declaration
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UnresolvedReference a
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MathematicalConstant 1
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IfBranch
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UnresolvedReference cond2
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TreeList
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BinaryOperation Declaration
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UnresolvedReference b
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UnresolvedReference a
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ElseIfBranch Else
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TreeList
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BinaryOperation Declaration
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UnresolvedReference b
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MathematicalConstant 3
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ElseIfBranch Else
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TreeList
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BinaryOperation Declaration
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UnresolvedReference b
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MathematicalConstant 4
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ReturnNode
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UnresolvedReference b
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===== AST after if-branch-merging =====
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f(cond1, cond2):
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TreeList
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IfElseIfChain
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UnresolvedReference cond1
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TreeList
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BinaryOperation Declaration
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UnresolvedReference a
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MathematicalConstant 1
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IfElseIfChain
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UnresolvedReference cond2
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TreeList
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BinaryOperation Declaration
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UnresolvedReference b
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UnresolvedReference a
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TreeList
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BinaryOperation Declaration
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UnresolvedReference b
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MathematicalConstant 3
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TreeList
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BinaryOperation Declaration
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UnresolvedReference b
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MathematicalConstant 4
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ReturnNode
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UnresolvedReference b
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===== AST after reference-resolving =====
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f(cond1, cond2):
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TreeList
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IfElseIfChain
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Var cond1
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TreeList
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BinaryOperation Assignment
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Var a
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MathematicalConstant 1
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IfElseIfChain
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Var cond2
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TreeList
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BinaryOperation Assignment
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Var b
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Var a
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TreeList
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BinaryOperation Assignment
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Var b
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MathematicalConstant 3
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TreeList
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BinaryOperation Assignment
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Var b
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MathematicalConstant 4
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ReturnNode
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Var b
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===== AST after cfg-building =====
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f(cond1, cond2):
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TreeList
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IfElseIfChain
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Var cond1
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TreeList
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BinaryOperation Assignment
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Var a
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MathematicalConstant 1
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IfElseIfChain
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Var cond2
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TreeList
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BinaryOperation Assignment
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Var b
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Var a
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TreeList
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BinaryOperation Assignment
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Var b
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MathematicalConstant 3
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TreeList
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BinaryOperation Assignment
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Var b
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MathematicalConstant 4
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ReturnNode
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Var b
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===== CFG after cfg-building =====
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f(cond1, cond2):
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0:
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ControlFlowBranch true=3 false=7
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Var cond1
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1:
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ControlFlowFunctionReturn
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Var $return
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2:
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BinaryOperation Assignment
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Var $return
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Var b
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ControlFlowJump jump=1
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3:
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BinaryOperation Assignment
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Var a
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MathematicalConstant 1
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ControlFlowBranch true=5 false=6
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Var cond2
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4:
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ControlFlowJump jump=2
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5:
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BinaryOperation Assignment
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Var b
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Var a
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ControlFlowJump jump=4
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6:
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BinaryOperation Assignment
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Var b
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MathematicalConstant 3
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ControlFlowJump jump=4
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7:
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BinaryOperation Assignment
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Var b
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MathematicalConstant 4
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ControlFlowJump jump=2
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8:
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BinaryOperation Assignment
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Var $return
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Error ""
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ControlFlowJump jump=1
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===== AST after cfg-simplification =====
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f(cond1, cond2):
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TreeList
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IfElseIfChain
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Var cond1
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TreeList
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BinaryOperation Assignment
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Var a
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MathematicalConstant 1
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IfElseIfChain
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Var cond2
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TreeList
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BinaryOperation Assignment
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Var b
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Var a
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TreeList
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BinaryOperation Assignment
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Var b
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MathematicalConstant 3
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TreeList
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BinaryOperation Assignment
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Var b
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MathematicalConstant 4
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ReturnNode
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Var b
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===== CFG after cfg-simplification =====
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f(cond1, cond2):
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0:
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ControlFlowBranch true=3 false=6
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Var cond1
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1:
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ControlFlowFunctionReturn
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Var $return
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2:
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BinaryOperation Assignment
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Var $return
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Var b
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ControlFlowJump jump=1
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3:
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BinaryOperation Assignment
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Var a
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MathematicalConstant 1
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ControlFlowBranch true=4 false=5
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Var cond2
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4:
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BinaryOperation Assignment
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Var b
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Var a
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ControlFlowJump jump=2
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5:
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BinaryOperation Assignment
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Var b
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MathematicalConstant 3
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ControlFlowJump jump=2
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6:
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BinaryOperation Assignment
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Var b
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MathematicalConstant 4
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ControlFlowJump jump=2
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===== AST after ssa-building =====
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f(cond1, cond2):
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TreeList
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IfElseIfChain
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Var cond1@0
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TreeList
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BinaryOperation Assignment
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Var a@1
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MathematicalConstant 1
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IfElseIfChain
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Var cond2@0
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TreeList
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BinaryOperation Assignment
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Var b@1
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Var a@1
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TreeList
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BinaryOperation Assignment
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Var b@3
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MathematicalConstant 3
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TreeList
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BinaryOperation Assignment
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Var b@4
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MathematicalConstant 4
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ReturnNode
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Var b@2
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===== CFG after ssa-building =====
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f(cond1, cond2):
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0:
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ControlFlowBranch true=1 false=6
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Var cond1@0
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1:
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BinaryOperation Assignment
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Var a@1
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MathematicalConstant 1
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ControlFlowBranch true=2 false=5
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Var cond2@0
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2:
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BinaryOperation Assignment
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Var b@1
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Var a@1
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ControlFlowJump jump=3
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3:
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a@2 = phi(2: a@1, 5: a@1, 6: a@0)
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b@2 = phi(2: b@1, 5: b@3, 6: b@4)
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BinaryOperation Assignment
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Var $return@1
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Var b@2
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ControlFlowJump jump=4
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4:
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ControlFlowFunctionReturn
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Var $return@1
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5:
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BinaryOperation Assignment
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Var b@3
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MathematicalConstant 3
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ControlFlowJump jump=3
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6:
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BinaryOperation Assignment
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Var b@4
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MathematicalConstant 4
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ControlFlowJump jump=3
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===== AST after dce =====
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f(cond1, cond2):
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TreeList
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IfElseIfChain
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Var cond1@0
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TreeList
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BinaryOperation Assignment
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Var a@1
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MathematicalConstant 1
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IfElseIfChain
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Var cond2@0
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TreeList
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BinaryOperation Assignment
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Var b@1
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Var a@1
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TreeList
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BinaryOperation Assignment
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Var b@3
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MathematicalConstant 3
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TreeList
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BinaryOperation Assignment
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Var b@4
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MathematicalConstant 4
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ReturnNode
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Var b@2
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===== CFG after dce =====
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f(cond1, cond2):
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0:
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ControlFlowBranch true=1 false=6
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Var cond1@0
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1:
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BinaryOperation Assignment
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Var a@1
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MathematicalConstant 1
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ControlFlowBranch true=2 false=5
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Var cond2@0
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2:
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BinaryOperation Assignment
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Var b@1
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Var a@1
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ControlFlowJump jump=3
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3:
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b@2 = phi(2: b@1, 5: b@3, 6: b@4)
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BinaryOperation Assignment
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Var $return@1
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Var b@2
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ControlFlowJump jump=4
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4:
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ControlFlowFunctionReturn
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Var $return@1
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5:
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BinaryOperation Assignment
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Var b@3
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MathematicalConstant 3
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ControlFlowJump jump=3
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6:
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BinaryOperation Assignment
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Var b@4
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MathematicalConstant 4
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ControlFlowJump jump=3
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