Constructor Detail

• AstIsDefinedInstruction

  public AstIsDefinedInstruction(int iindex,
                                 int lval,
                                 int rval,
                                 int fieldVal,
                                 FieldReference fieldRef)

  This constructor should only be used from SSAInstruction.copyForSSA(SSAInstructionFactory, int[], int[])

• AstIsDefinedInstruction

  public AstIsDefinedInstruction(int iindex,
                                 int lval,
                                 int rval,
                                 FieldReference fieldRef)

• AstIsDefinedInstruction

  public AstIsDefinedInstruction(int iindex,
                                 int lval,
                                 int rval,
                                 int fieldVal)

• AstIsDefinedInstruction

  public AstIsDefinedInstruction(int iindex,
                                 int lval,
                                 int rval)

Method Detail

• 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

• toString

  public String toString(SymbolTable symbolTable)

  Specified by:

  toString in class SSAInstruction

• 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

• getExceptionTypes

  public Collection<TypeReference> getExceptionTypes()

  Description copied from class: SSAInstruction
  This method should never return null.

  Overrides:

  getExceptionTypes in class SSAInstruction

  Returns:

  the set of exception types that an instruction might throw ... disregarding athrows and invokes.

• hasDef

  public boolean hasDef()

  Description copied from class: SSAInstruction
  Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g. for invoke instructions).

  Overrides:

  hasDef in class SSAInstruction

  Returns:

  true if the instruction does define a proper value.

• getDef

  public int getDef()

  Overrides:

  getDef in class SSAInstruction

• getDef

  public int getDef(int i)

  Description copied from class: SSAInstruction
  Return the ith def

  Overrides:

  getDef in class SSAInstruction

  Parameters:

  i - number of the def, starting at 0.

• getNumberOfDefs

  public int getNumberOfDefs()

  Overrides:

  getNumberOfDefs in class SSAInstruction

• getNumberOfUses

  public int getNumberOfUses()

  Overrides:

  getNumberOfUses in class SSAInstruction

• 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)

• isFallThrough

  public boolean isFallThrough()

  Specified by:

  isFallThrough in class SSAInstruction

  Returns:

  true iff this instruction may fall through to the next

• hashCode

  public int hashCode()

  Specified by:

  hashCode in class SSAInstruction

• getFieldRef

  public FieldReference getFieldRef()