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org.jikesrvm.compilers.opt.ir
Class Goto

java.lang.Object
  extended by org.jikesrvm.compilers.opt.ir.InstructionFormat
      extended by org.jikesrvm.compilers.opt.ir.Goto

public final class Goto
extends InstructionFormat

The Goto InstructionFormat class. The header comment for Instruction contains an explanation of the role of InstructionFormats in the opt compiler's IR.

Field Summary
 
Fields inherited from class org.jikesrvm.compilers.opt.ir.InstructionFormat
ALoad_format, ALoad_traits, ARCH_INDEPENDENT_INSTR_FORMAT_END_format, AStore_format, AStore_traits, Athrow_format, Athrow_traits, Attempt_format, Attempt_traits, BBend_format, BBend_traits, Binary_format, Binary_traits, BooleanCmp_format, BooleanCmp_traits, BoundsCheck_format, BoundsCheck_traits, CacheOp_format, CacheOp_traits, Call_format, Call_traits, CondMove_format, CondMove_traits, Empty_format, Empty_traits, GetField_format, GetField_traits, GetStatic_format, GetStatic_traits, Goto_format, Goto_traits, GuardedBinary_format, GuardedBinary_traits, GuardedSet_format, GuardedSet_traits, GuardedUnary_format, GuardedUnary_traits, IfCmp_format, IfCmp_traits, IfCmp2_format, IfCmp2_traits, InlineGuard_format, InlineGuard_traits, InstanceOf_format, InstanceOf_traits, InstrumentedCounter_format, InstrumentedCounter_traits, Label_format, Label_traits, Load_format, Load_traits, LookupSwitch_format, LookupSwitch_traits, LowTableSwitch_format, LowTableSwitch_traits, MIN_OPERAND_ARRAY_LENGTH, MIR_BinaryAcc_format, MIR_BinaryAcc_traits, MIR_Branch_format, MIR_Branch_traits, MIR_CacheOp_format, MIR_CacheOp_traits, MIR_Call_format, MIR_Call_traits, MIR_CaseLabel_format, MIR_CaseLabel_traits, MIR_Compare_format, MIR_Compare_traits, MIR_CompareExchange_format, MIR_CompareExchange_traits, MIR_CompareExchange8B_format, MIR_CompareExchange8B_traits, MIR_CondBranch_format, MIR_CondBranch_traits, MIR_CondBranch2_format, MIR_CondBranch2_traits, MIR_CondMove_format, MIR_CondMove_traits, MIR_ConvertDW2QW_format, MIR_ConvertDW2QW_traits, MIR_Divide_format, MIR_Divide_traits, MIR_DoubleShift_format, MIR_DoubleShift_traits, MIR_Empty_format, MIR_Empty_traits, MIR_FSave_format, MIR_FSave_traits, MIR_Lea_format, MIR_Lea_traits, MIR_LowTableSwitch_format, MIR_LowTableSwitch_traits, MIR_Move_format, MIR_Move_traits, MIR_Multiply_format, MIR_Multiply_traits, MIR_Nullary_format, MIR_Nullary_traits, MIR_RDTSC_format, MIR_RDTSC_traits, MIR_Return_format, MIR_Return_traits, MIR_Set_format, MIR_Set_traits, MIR_Test_format, MIR_Test_traits, MIR_Trap_format, MIR_Trap_traits, MIR_TrapIf_format, MIR_TrapIf_traits, MIR_Unary_format, MIR_Unary_traits, MIR_UnaryAcc_format, MIR_UnaryAcc_traits, MIR_UnaryNoRes_format, MIR_UnaryNoRes_traits, MIR_XChng_format, MIR_XChng_traits, MonitorOp_format, MonitorOp_traits, Move_format, Move_traits, Multianewarray_format, Multianewarray_traits, New_format, New_traits, NewArray_format, NewArray_traits, Nullary_format, Nullary_traits, NullCheck_format, NullCheck_traits, OsrBarrier_format, OsrBarrier_traits, OsrPoint_format, OsrPoint_traits, Phi_format, Phi_traits, Prepare_format, Prepare_traits, Prologue_format, Prologue_traits, PutField_format, PutField_traits, PutStatic_format, PutStatic_traits, Return_format, Return_traits, Store_format, Store_traits, StoreCheck_format, StoreCheck_traits, TableSwitch_format, TableSwitch_traits, Trap_format, Trap_traits, TrapIf_format, TrapIf_traits, TypeCheck_format, TypeCheck_traits, Unary_format, Unary_traits, Unassigned_format, ZeroCheck_format, ZeroCheck_traits
 
Constructor Summary
Goto()
           
 
Method Summary
static boolean conforms(Instruction i)
          InstructionFormat identification method for Goto.
static boolean conforms(Operator o)
          InstructionFormat identification method for Goto.
static Instruction create(Operator o, BranchOperand Target)
          Create an instruction of the Goto instruction format.
static BranchOperand getClearTarget(Instruction i)
          Get the operand called Target from the argument instruction clearing its instruction pointer.
static BranchOperand getTarget(Instruction i)
          Get the operand called Target from the argument instruction.
static boolean hasTarget(Instruction i)
          Does the argument instruction have a non-null operand named Target?
static int indexOfTarget(Instruction i)
          Return the index of the operand called Target in the argument instruction.
static Instruction mutate(Instruction i, Operator o, BranchOperand Target)
          Mutate the argument instruction into an instruction of the Goto instruction format having the specified operator and operands.
static void setTarget(Instruction i, BranchOperand Target)
          Set the operand called Target in the argument instruction to the argument operand.
 
Methods inherited from class org.jikesrvm.compilers.opt.ir.InstructionFormat
fail, fail
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Goto

public Goto()
Method Detail

conforms

public static boolean conforms(Instruction i)
InstructionFormat identification method for Goto.

Parameters:
i - an instruction
Returns:
true if the InstructionFormat of the argument instruction is Goto or false if it is not.

conforms

public static boolean conforms(Operator o)
InstructionFormat identification method for Goto.

Parameters:
o - an instruction
Returns:
true if the InstructionFormat of the argument operator is Goto or false if it is not.

getTarget

public static BranchOperand getTarget(Instruction i)
Get the operand called Target from the argument instruction. Note that the returned operand will still point to its containing instruction.

Parameters:
i - the instruction to fetch the operand from
Returns:
the operand called Target

getClearTarget

public static BranchOperand getClearTarget(Instruction i)
Get the operand called Target from the argument instruction clearing its instruction pointer. The returned operand will not point to any containing instruction.

Parameters:
i - the instruction to fetch the operand from
Returns:
the operand called Target

setTarget

public static void setTarget(Instruction i,
                             BranchOperand Target)
Set the operand called Target in the argument instruction to the argument operand. The operand will now point to the argument instruction as its containing instruction.

Parameters:
i - the instruction in which to store the operand
Target - the operand to store

indexOfTarget

public static int indexOfTarget(Instruction i)
Return the index of the operand called Target in the argument instruction.

Parameters:
i - the instruction to access.
Returns:
the index of the operand called Target in the argument instruction

hasTarget

public static boolean hasTarget(Instruction i)
Does the argument instruction have a non-null operand named Target?

Parameters:
i - the instruction to access.
Returns:
true if the instruction has an non-null operand named Target or false if it does not.

create

public static Instruction create(Operator o,
                                 BranchOperand Target)
Create an instruction of the Goto instruction format.

Parameters:
o - the instruction's operator
Target - the instruction's Target operand
Returns:
the newly created Goto instruction

mutate

public static Instruction mutate(Instruction i,
                                 Operator o,
                                 BranchOperand Target)
Mutate the argument instruction into an instruction of the Goto instruction format having the specified operator and operands.

Parameters:
i - the instruction to mutate
o - the instruction's operator
Target - the instruction's Target operand
Returns:
the mutated instruction
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