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org.jikesrvm.compilers.opt.ir
Class Trap

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

public final class Trap
extends InstructionFormat

The Trap 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
Trap()
           
 
Method Summary
static boolean conforms(Instruction i)
          InstructionFormat identification method for Trap.
static boolean conforms(Operator o)
          InstructionFormat identification method for Trap.
static Instruction create(Operator o, RegisterOperand GuardResult, TrapCodeOperand TCode)
          Create an instruction of the Trap instruction format.
static RegisterOperand getClearGuardResult(Instruction i)
          Get the operand called GuardResult from the argument instruction clearing its instruction pointer.
static TrapCodeOperand getClearTCode(Instruction i)
          Get the operand called TCode from the argument instruction clearing its instruction pointer.
static RegisterOperand getGuardResult(Instruction i)
          Get the operand called GuardResult from the argument instruction.
static TrapCodeOperand getTCode(Instruction i)
          Get the operand called TCode from the argument instruction.
static boolean hasGuardResult(Instruction i)
          Does the argument instruction have a non-null operand named GuardResult?
static boolean hasTCode(Instruction i)
          Does the argument instruction have a non-null operand named TCode?
static int indexOfGuardResult(Instruction i)
          Return the index of the operand called GuardResult in the argument instruction.
static int indexOfTCode(Instruction i)
          Return the index of the operand called TCode in the argument instruction.
static Instruction mutate(Instruction i, Operator o, RegisterOperand GuardResult, TrapCodeOperand TCode)
          Mutate the argument instruction into an instruction of the Trap instruction format having the specified operator and operands.
static void setGuardResult(Instruction i, RegisterOperand GuardResult)
          Set the operand called GuardResult in the argument instruction to the argument operand.
static void setTCode(Instruction i, TrapCodeOperand TCode)
          Set the operand called TCode 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

Trap

public Trap()
Method Detail

conforms

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

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

conforms

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

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

getGuardResult

public static RegisterOperand getGuardResult(Instruction i)
Get the operand called GuardResult 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 GuardResult

getClearGuardResult

public static RegisterOperand getClearGuardResult(Instruction i)
Get the operand called GuardResult 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 GuardResult

setGuardResult

public static void setGuardResult(Instruction i,
                                  RegisterOperand GuardResult)
Set the operand called GuardResult 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
GuardResult - the operand to store

indexOfGuardResult

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

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

hasGuardResult

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

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

getTCode

public static TrapCodeOperand getTCode(Instruction i)
Get the operand called TCode 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 TCode

getClearTCode

public static TrapCodeOperand getClearTCode(Instruction i)
Get the operand called TCode 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 TCode

setTCode

public static void setTCode(Instruction i,
                            TrapCodeOperand TCode)
Set the operand called TCode 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
TCode - the operand to store

indexOfTCode

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

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

hasTCode

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

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

create

public static Instruction create(Operator o,
                                 RegisterOperand GuardResult,
                                 TrapCodeOperand TCode)
Create an instruction of the Trap instruction format.

Parameters:
o - the instruction's operator
GuardResult - the instruction's GuardResult operand
TCode - the instruction's TCode operand
Returns:
the newly created Trap instruction

mutate

public static Instruction mutate(Instruction i,
                                 Operator o,
                                 RegisterOperand GuardResult,
                                 TrapCodeOperand TCode)
Mutate the argument instruction into an instruction of the Trap instruction format having the specified operator and operands.

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