org.jikesrvm.compilers.opt.ir

Class GuardResultCarrier

java.lang.Object

org.jikesrvm.compilers.opt.ir.InstructionFormat

org.jikesrvm.compilers.opt.ir.GuardResultCarrier

public final class GuardResultCarrier
extends InstructionFormat

InstructionFormats that have a GuardResult (which is RegisterOperand)

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, 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

Constructors

Constructor and Description
GuardResultCarrier()

Method Summary

Modifier and Type	Method and Description
static boolean	conforms(Instruction i) Does the instruction belong to an instruction format that has an operand called GuardResult?
static boolean	conforms(Operator o) Does the operator belong to an instruction format that has an operand called GuardResult?
static RegisterOperand	getClearGuardResult(Instruction i) Get the operand called GuardResult from the argument instruction clearing its instruction pointer.
static RegisterOperand	getGuardResult(Instruction i) Get the operand called GuardResult from the argument instruction.
static boolean	hasGuardResult(Instruction i) Does the argument instruction have a non-null operand named GuardResult?
static int	indexOfGuardResult(Instruction i) Return the index of the operand called GuardResult in the argument instruction.
static int	lookup(int index) Performs table lookup
static void	setGuardResult(Instruction i, RegisterOperand op) Set the operand called GuardResult 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

GuardResultCarrier

public GuardResultCarrier()

Method Detail

lookup

public static int lookup(int index)

Performs table lookup

Parameters:

index - the index to lookup

Returns:

the index into the instruction operands that carries the GuardResult or -1 if not carried

conforms

public static boolean conforms(Instruction i)

Does the instruction belong to an instruction format that has an operand called GuardResult?

Parameters:

i - the instruction to test

Returns:

true if the instruction's instruction format has an operand called GuardResult and false if it does not.

conforms

public static boolean conforms(Operator o)

Does the operator belong to an instruction format that has an operand called GuardResult?

Parameters:

o - the operator to test

Returns:

true if the instruction's instruction format has an operand called GuardResult and false if it does 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 op)

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

op - 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.