public class ClinitElimAnalysis extends ForwardFlowAnalysis
FlowAnalysis.Flow
filterUnitToAfterFlow, unitToAfterFlow
filterUnitToBeforeFlow, graph, unitToBeforeFlow
Constructor and Description |
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ClinitElimAnalysis(UnitGraph g) |
Modifier and Type | Method and Description |
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void |
copy(java.lang.Object src,
java.lang.Object dest)
Creates a copy of the
source flow object in dest . |
protected java.lang.Object |
entryInitialFlow()
Returns the initial flow value for entry/exit graph nodes.
|
protected void |
flowThrough(java.lang.Object inVal,
java.lang.Object stmt,
java.lang.Object outVal)
Given the merge of the
out sets, compute the in
set for s (or in to out, depending on direction). |
void |
merge(java.lang.Object in1,
java.lang.Object in2,
java.lang.Object out)
Compute the merge of the
in1 and in2 sets, putting the result into out . |
protected java.lang.Object |
newInitialFlow()
Returns the flow object corresponding to the initial values for
each graph node.
|
doAnalysis, isForward
getFlow, getFlowAfter, getFlowBefore, omissible
merge, mergeInto, treatTrapHandlersAsEntries
public ClinitElimAnalysis(UnitGraph g)
public void merge(java.lang.Object in1, java.lang.Object in2, java.lang.Object out)
AbstractFlowAnalysis
in1
and in2
sets, putting the result into out
.
The behavior of this function depends on the implementation ( it may be necessary to check whether
in1
and in2
are equal or aliased ).
Used by the doAnalysis method.merge
in class AbstractFlowAnalysis
public void copy(java.lang.Object src, java.lang.Object dest)
AbstractFlowAnalysis
source
flow object in dest
.copy
in class AbstractFlowAnalysis
protected void flowThrough(java.lang.Object inVal, java.lang.Object stmt, java.lang.Object outVal)
FlowAnalysis
out
sets, compute the in
set for s
(or in to out, depending on direction).
This function often causes confusion, because the same interface is used
for both forward and backward flow analyses. The first parameter is
always the argument to the flow function (i.e. it is the "in" set in a
forward analysis and the "out" set in a backward analysis), and the third
parameter is always the result of the flow function (i.e. it is the "out"
set in a forward analysis and the "in" set in a backward analysis).flowThrough
in class FlowAnalysis
inVal
- the input flowstmt
- the current nodeoutVal
- the returned flowprotected java.lang.Object entryInitialFlow()
AbstractFlowAnalysis
AbstractFlowAnalysis.newInitialFlow()
entryInitialFlow
in class AbstractFlowAnalysis
protected java.lang.Object newInitialFlow()
AbstractFlowAnalysis
newInitialFlow
in class AbstractFlowAnalysis