Package com.ibm.wala.ssa
Class SSAConditionalBranchInstruction
- java.lang.Object
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- com.ibm.wala.ssa.SSAInstruction
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- com.ibm.wala.ssa.SSAConditionalBranchInstruction
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public class SSAConditionalBranchInstruction extends SSAInstruction
A conditional branch instruction, which tests two values according to someIConditionalBranchInstruction.IOperator
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Nested Class Summary
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Nested classes/interfaces inherited from class com.ibm.wala.ssa.SSAInstruction
SSAInstruction.IVisitor, SSAInstruction.Visitor
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Field Summary
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Fields inherited from class com.ibm.wala.ssa.SSAInstruction
iindex, NO_INDEX
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Constructor Summary
Constructors Constructor Description SSAConditionalBranchInstruction(int iindex, IConditionalBranchInstruction.IOperator operator, TypeReference type, int val1, int val2, int target)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SSAInstruction
copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses)
This method is meant to be used during SSA conversion for an IR that is not in SSA form.int
getNumberOfUses()
IConditionalBranchInstruction.IOperator
getOperator()
int
getTarget()
TypeReference
getType()
int
getUse(int j)
int
hashCode()
boolean
isFallThrough()
boolean
isIntegerComparison()
boolean
isObjectComparison()
String
toString(SymbolTable symbolTable)
void
visit(SSAInstruction.IVisitor v)
Apply an IVisitor to this instruction.-
Methods inherited from class com.ibm.wala.ssa.SSAInstruction
equals, getDef, getDef, getExceptionTypes, getNumberOfDefs, getValueString, hasDef, isPEI, toString
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Constructor Detail
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SSAConditionalBranchInstruction
public SSAConditionalBranchInstruction(int iindex, IConditionalBranchInstruction.IOperator operator, TypeReference type, int val1, int val2, int target) throws IllegalArgumentException
- Throws:
IllegalArgumentException
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Method Detail
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getTarget
public int getTarget()
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copyForSSA
public SSAInstruction copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses) throws IllegalArgumentException
Description copied from class:SSAInstruction
This method is meant to be used during SSA conversion for an IR that is not in SSA form. It creates a new SSAInstruction of the same type as the receiver, with a combination of the receiver's uses and defs and those from the method parameters. In particular, if the 'defs' parameter is null, then the new instruction has the same defs as the receiver. If 'defs' is not null, it must be an array with a size equal to the number of defs that the receiver instruction has. In this case, the new instruction has defs taken from the array. The uses of the new instruction work in the same way with the 'uses' parameter. Note that this only applies to CAst-based IR translation, since Java bytecode-based IR generation uses a different SSA construction mechanism. TODO: move this into the SSAInstructionFactory- Specified by:
copyForSSA
in classSSAInstruction
- Throws:
IllegalArgumentException
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getOperator
public IConditionalBranchInstruction.IOperator getOperator()
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toString
public String toString(SymbolTable symbolTable)
- Specified by:
toString
in classSSAInstruction
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visit
public void visit(SSAInstruction.IVisitor v)
Description copied from class:SSAInstruction
Apply an IVisitor to this instruction. We invoke the appropriate IVisitor method according to the type of this instruction.- Specified by:
visit
in classSSAInstruction
- Throws:
IllegalArgumentException
- if v is null- See Also:
SSAInstruction.visit(IVisitor)
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getNumberOfUses
public int getNumberOfUses()
- Overrides:
getNumberOfUses
in classSSAInstruction
- See Also:
SSAInstruction.getNumberOfUses()
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getUse
public int getUse(int j)
- Overrides:
getUse
in classSSAInstruction
- Returns:
- value number representing the jth use in this instruction. -1 means TOP (i.e., the value doesn't matter)
- See Also:
SSAInstruction.getUse(int)
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getType
public TypeReference getType()
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isObjectComparison
public boolean isObjectComparison()
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isIntegerComparison
public boolean isIntegerComparison()
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hashCode
public int hashCode()
- Specified by:
hashCode
in classSSAInstruction
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isFallThrough
public boolean isFallThrough()
- Specified by:
isFallThrough
in classSSAInstruction
- Returns:
- true iff this instruction may fall through to the next
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