org.jikesrvm.compilers.opt.ir

Class BranchProfileCarrier

java.lang.Object

org.jikesrvm.compilers.opt.ir.InstructionFormat

org.jikesrvm.compilers.opt.ir.BranchProfileCarrier

public final class BranchProfileCarrier
extends InstructionFormat

InstructionFormats that have a BranchProfile (which is BranchProfileOperand)

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
BranchProfileCarrier()

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 BranchProfile?
static boolean	conforms(Operator o) Does the operator belong to an instruction format that has an operand called BranchProfile?
static BranchProfileOperand	getBranchProfile(Instruction i) Get the operand called BranchProfile from the argument instruction.
static BranchProfileOperand	getClearBranchProfile(Instruction i) Get the operand called BranchProfile from the argument instruction clearing its instruction pointer.
static boolean	hasBranchProfile(Instruction i) Does the argument instruction have a non-null operand named BranchProfile?
static int	indexOfBranchProfile(Instruction i) Return the index of the operand called BranchProfile in the argument instruction.
static int	lookup(int index) Performs table lookup
static void	setBranchProfile(Instruction i, BranchProfileOperand op) Set the operand called BranchProfile 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

BranchProfileCarrier

public BranchProfileCarrier()

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 BranchProfile 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 BranchProfile?

Parameters:

i - the instruction to test

Returns:

true if the instruction's instruction format has an operand called BranchProfile 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 BranchProfile?

Parameters:

o - the operator to test

Returns:

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

getBranchProfile

public static BranchProfileOperand getBranchProfile(Instruction i)

Get the operand called BranchProfile 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 BranchProfile

getClearBranchProfile

public static BranchProfileOperand getClearBranchProfile(Instruction i)

Get the operand called BranchProfile 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 BranchProfile

setBranchProfile

public static void setBranchProfile(Instruction i,
                                    BranchProfileOperand op)

Set the operand called BranchProfile 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

indexOfBranchProfile

public static int indexOfBranchProfile(Instruction i)

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

Parameters:

i - the instruction to access.

Returns:

the index of the operand called BranchProfile in the argument instruction

hasBranchProfile

public static boolean hasBranchProfile(Instruction i)

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

Parameters:

i - the instruction to access.

Returns:

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