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org.jikesrvm.compilers.opt.ir
Class GuardedSet

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

public final class GuardedSet
extends InstructionFormat

The GuardedSet 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
GuardedSet()
           
 
Method Summary
static boolean conforms(Instruction i)
          InstructionFormat identification method for GuardedSet.
static boolean conforms(Operator o)
          InstructionFormat identification method for GuardedSet.
static Instruction create(Operator o, Operand Ref, Operand Val, Operand Guard)
          Create an instruction of the GuardedSet instruction format.
static Operand getClearGuard(Instruction i)
          Get the operand called Guard from the argument instruction clearing its instruction pointer.
static Operand getClearRef(Instruction i)
          Get the operand called Ref 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 Operand getRef(Instruction i)
          Get the operand called Ref 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 hasRef(Instruction i)
          Does the argument instruction have a non-null operand named Ref?
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 indexOfRef(Instruction i)
          Return the index of the operand called Ref 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, Operand Ref, Operand Val, Operand Guard)
          Mutate the argument instruction into an instruction of the GuardedSet 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 setRef(Instruction i, Operand Ref)
          Set the operand called Ref 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

GuardedSet

public GuardedSet()
Method Detail

conforms

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

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

conforms

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

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

getRef

public static Operand getRef(Instruction i)
Get the operand called Ref 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 Ref

getClearRef

public static Operand getClearRef(Instruction i)
Get the operand called Ref 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 Ref

setRef

public static void setRef(Instruction i,
                          Operand Ref)
Set the operand called Ref 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
Ref - the operand to store

indexOfRef

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

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

hasRef

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

Parameters:
i - the instruction to access.
Returns:
true if the instruction has an non-null operand named Ref 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,
                                 Operand Ref,
                                 Operand Val,
                                 Operand Guard)
Create an instruction of the GuardedSet instruction format.

Parameters:
o - the instruction's operator
Ref - the instruction's Ref operand
Val - the instruction's Val operand
Guard - the instruction's Guard operand
Returns:
the newly created GuardedSet instruction

mutate

public static Instruction mutate(Instruction i,
                                 Operator o,
                                 Operand Ref,
                                 Operand Val,
                                 Operand Guard)
Mutate the argument instruction into an instruction of the GuardedSet instruction format having the specified operator and operands.

Parameters:
i - the instruction to mutate
o - the instruction's operator
Ref - the instruction's Ref operand
Val - the instruction's Val operand
Guard - the instruction's Guard operand
Returns:
the mutated instruction
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