Class SSAInvokeInstruction

java.lang.Object

com.ibm.wala.ssa.SSAInstruction

com.ibm.wala.ssa.SSAAbstractInvokeInstruction

com.ibm.wala.ssa.SSAInvokeInstruction

Direct Known Subclasses:

SSAInvokeDynamicInstruction

public abstract class SSAInvokeInstruction
extends SSAAbstractInvokeInstruction

Nested Class Summary

Nested classes/interfaces inherited from class SSAInstruction

SSAInstruction.IVisitor, SSAInstruction.Visitor

Field Summary

Fields

Modifier and Type	Field	Description
protected final int[]	params	The value numbers of the arguments passed to the call.
protected final int	result

Fields inherited from class SSAAbstractInvokeInstruction

exception, site

Fields inherited from class SSAInstruction

NO_INDEX

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SSAInvokeInstruction(int iindex, int[] params, int exception, CallSiteReference site)	Constructor InvokeInstruction.
protected	SSAInvokeInstruction(int iindex, int result, int[] params, int exception, CallSiteReference site)

Method Summary

Modifier and Type	Method	Description
static void	assertParamsKosher(int result, int[] params, CallSiteReference site)
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	getNumberOfPositionalParameters()	How many parameters does this call specify?
int	getNumberOfReturnValues()	How many distinct values does this call return?
int	getNumberOfUses()
int	getReturnValue(int i)	What is the the value number of the ith value returned by this call
int	getUse(int j)
int	hashCode()
void	visit(SSAInstruction.IVisitor v)	Apply an IVisitor to this instruction.

Methods inherited from class SSAAbstractInvokeInstruction

getCallSite, getDeclaredResultType, getDeclaredTarget, getDef, getDef, getException, getInvocationCode, getNumberOfDefs, getProgramCounter, getReceiver, hasDef, isDispatch, isFallThrough, isPEI, isSpecial, isStatic, toString

Methods inherited from class SSAInstruction

equals, getExceptionTypes, getValueString, iIndex, setInstructionIndex, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

result

protected final int result

params

protected final int[] params

The value numbers of the arguments passed to the call. For non-static methods, params[0] == this. If params == null, this should be a static method with no parameters.

Constructor Details

SSAInvokeInstruction

protected SSAInvokeInstruction(int iindex,
 int result,
 int[] params,
 int exception,
 CallSiteReference site)

SSAInvokeInstruction

protected SSAInvokeInstruction(int iindex,
 int[] params,
 int exception,
 CallSiteReference site)

Constructor InvokeInstruction. This case for void return values

Method Details

copyForSSA

public SSAInstruction copyForSSA(SSAInstructionFactory insts,
 int[] defs,
 int[] uses)

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 class SSAInstruction

assertParamsKosher

public static void assertParamsKosher(int result,
 int[] params,
 CallSiteReference site)
                               throws IllegalArgumentException

Throws:

IllegalArgumentException

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 class SSAInstruction

Throws:

IllegalArgumentException - if v is null

See Also:

• SSAInstruction.visit(IVisitor)

getNumberOfUses

public int getNumberOfUses()

Overrides:

getNumberOfUses in class SSAInstruction

See Also:

• SSAInstruction.getNumberOfUses()

getNumberOfPositionalParameters

public int getNumberOfPositionalParameters()

Description copied from class: SSAAbstractInvokeInstruction

How many parameters does this call specify?

Specified by:

getNumberOfPositionalParameters in class SSAAbstractInvokeInstruction

getNumberOfReturnValues

public int getNumberOfReturnValues()

Description copied from class: SSAAbstractInvokeInstruction

How many distinct values does this call return?

Specified by:

getNumberOfReturnValues in class SSAAbstractInvokeInstruction

getReturnValue

public int getReturnValue(int i)

Description copied from class: SSAAbstractInvokeInstruction

What is the the value number of the ith value returned by this call

Specified by:

getReturnValue in class SSAAbstractInvokeInstruction

getUse

public int getUse(int j)

Overrides:

getUse in class SSAInstruction

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)

hashCode

public int hashCode()

Specified by:

hashCode in class SSAInstruction