org.jikesrvm.compilers.opt.ir

Class GuardedUnary

java.lang.Object

org.jikesrvm.compilers.opt.ir.InstructionFormat

org.jikesrvm.compilers.opt.ir.GuardedUnary

public final class GuardedUnary
extends InstructionFormat

The GuardedUnary 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, 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
GuardedUnary()

Method Summary

Modifier and Type	Method and Description
static boolean	conforms(Instruction i) InstructionFormat identification method for GuardedUnary.
static boolean	conforms(Operator o) InstructionFormat identification method for GuardedUnary.
static Instruction	create(Operator o, RegisterOperand Result, Operand Val, Operand Guard) Create an instruction of the GuardedUnary instruction format.
static Operand	getClearGuard(Instruction i) Get the operand called Guard from the argument instruction clearing its instruction pointer.
static RegisterOperand	getClearResult(Instruction i) Get the operand called Result from the argument instruction clearing its instruction pointer.
static Operand	getClearVal(Instruction i) Get the operand called Val from the argument instruction clearing its instruction pointer.
static Operand	getGuard(Instruction i) Get the operand called Guard from the argument instruction.
static RegisterOperand	getResult(Instruction i) Get the operand called Result from the argument instruction.
static Operand	getVal(Instruction i) Get the operand called Val from the argument instruction.
static boolean	hasGuard(Instruction i) Does the argument instruction have a non-null operand named Guard?
static boolean	hasResult(Instruction i) Does the argument instruction have a non-null operand named Result?
static boolean	hasVal(Instruction i) Does the argument instruction have a non-null operand named Val?
static int	indexOfGuard(Instruction i) Return the index of the operand called Guard in the argument instruction.
static int	indexOfResult(Instruction i) Return the index of the operand called Result in the argument instruction.
static int	indexOfVal(Instruction i) Return the index of the operand called Val in the argument instruction.
static Instruction	mutate(Instruction i, Operator o, RegisterOperand Result, Operand Val, Operand Guard) Mutate the argument instruction into an instruction of the GuardedUnary instruction format having the specified operator and operands.
static void	setGuard(Instruction i, Operand Guard) Set the operand called Guard in the argument instruction to the argument operand.
static void	setResult(Instruction i, RegisterOperand Result) Set the operand called Result in the argument instruction to the argument operand.
static void	setVal(Instruction i, Operand Val) Set the operand called Val 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

GuardedUnary

public GuardedUnary()

Method Detail

conforms

public static boolean conforms(Instruction i)

InstructionFormat identification method for GuardedUnary.

Parameters:

i - an instruction

Returns:

true if the InstructionFormat of the argument instruction is GuardedUnary or false if it is not.

conforms

public static boolean conforms(Operator o)

InstructionFormat identification method for GuardedUnary.

Parameters:

o - an instruction

Returns:

true if the InstructionFormat of the argument operator is GuardedUnary or false if it is not.

getResult

public static RegisterOperand getResult(Instruction i)

Get the operand called Result 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 Result

getClearResult

public static RegisterOperand getClearResult(Instruction i)

Get the operand called Result 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 Result

setResult

public static void setResult(Instruction i,
                             RegisterOperand Result)

Set the operand called Result 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

Result - the operand to store

indexOfResult

public static int indexOfResult(Instruction i)

Return the index of the operand called Result in the argument instruction.

Parameters:

i - the instruction to access.

Returns:

the index of the operand called Result in the argument instruction

hasResult

public static boolean hasResult(Instruction i)

Does the argument instruction have a non-null operand named Result?

Parameters:

i - the instruction to access.

Returns:

true if the instruction has an non-null operand named Result or false if it does not.

getVal

public static Operand getVal(Instruction i)

Get the operand called Val 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 Val

getClearVal

public static Operand getClearVal(Instruction i)

Get the operand called Val 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 Val

setVal

public static void setVal(Instruction i,
                          Operand Val)

Set the operand called Val 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

Val - the operand to store

indexOfVal

public static int indexOfVal(Instruction i)

Return the index of the operand called Val in the argument instruction.

Parameters:

i - the instruction to access.

Returns:

the index of the operand called Val in the argument instruction

hasVal

public static boolean hasVal(Instruction i)

Does the argument instruction have a non-null operand named Val?

Parameters:

i - the instruction to access.

Returns:

true if the instruction has an non-null operand named Val or false if it does not.

getGuard

public static Operand getGuard(Instruction i)

Get the operand called Guard 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 Guard

getClearGuard

public static Operand getClearGuard(Instruction i)

Get the operand called Guard 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 Guard

setGuard

public static void setGuard(Instruction i,
                            Operand Guard)

Set the operand called Guard 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

Guard - the operand to store

indexOfGuard

public static int indexOfGuard(Instruction i)

Return the index of the operand called Guard in the argument instruction.

Parameters:

i - the instruction to access.

Returns:

the index of the operand called Guard in the argument instruction

hasGuard

public static boolean hasGuard(Instruction i)

Does the argument instruction have a non-null operand named Guard?

Parameters:

i - the instruction to access.

Returns:

true if the instruction has an non-null operand named Guard or false if it does not.

create

public static Instruction create(Operator o,
                                 RegisterOperand Result,
                                 Operand Val,
                                 Operand Guard)

Create an instruction of the GuardedUnary instruction format.

Parameters:

o - the instruction's operator

Result - the instruction's Result operand

Val - the instruction's Val operand

Guard - the instruction's Guard operand

Returns:

the newly created GuardedUnary instruction

mutate

public static Instruction mutate(Instruction i,
                                 Operator o,
                                 RegisterOperand Result,
                                 Operand Val,
                                 Operand Guard)

Mutate the argument instruction into an instruction of the GuardedUnary instruction format having the specified operator and operands.

Parameters:

i - the instruction to mutate

o - the instruction's operator

Result - the instruction's Result operand

Val - the instruction's Val operand

Guard - the instruction's Guard operand

Returns:

the mutated instruction