org.jikesrvm.compilers.opt.ir.ia32

Class PhysicalDefUse

java.lang.Object

org.jikesrvm.compilers.opt.ir.ia32.PhysicalDefUse

public abstract class PhysicalDefUse
extends Object

This class provides utilities to record defs and uses of physical registers by IR operators.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PhysicalDefUse.PDUEnumeration A class to enumerate physical registers based on a code.

Field Summary

Fields

Modifier and Type	Field and Description
static int	mask Default empty mask
static int	maskAF AF in the eflags is used/defined
static int	maskAF_CF_OF_PF_SF_ZF
static int	maskAF_OF_PF_SF_ZF
private static int	maskALL Mask for all bits
static int	maskC0 C0 in the x87 FPU is used/defined
static int	maskC0_C1_C2_C3
static int	maskC1 C1 in the x87 FPU is used/defined
static int	maskC2 C2 in the x87 FPU is used/defined
static int	maskC3 C3 in the x87 FPU is used/defined
static int	maskcallDefs
static int	maskcallUses
static int	maskCF CF in the eflags is used/defined
static int	maskCF_OF
static int	maskCF_OF_PF_SF_ZF
static int	maskCF_PF_ZF
static int	maskESP The ESP register is used/defined
private static int	maskHIGH First mask bit
static int	maskIEEEMagicUses
static int	maskOF OF in the eflags is used/defined
static int	maskPF PF in the eflags is used/defined
static int	maskSF SF in the eflags is used/defined
static int	maskTR The processor register is used/defined
static int	maskTSPDefs Definitions mask used by dependence graph to show a yield point
static int	maskTSPUses Uses mask used by dependence graph to show a yield point
static int	maskZF ZF in the eflags is used/defined

Constructor Summary

Constructors

Constructor and Description
PhysicalDefUse()

Method Summary

Modifier and Type	Method and Description
static boolean	definesEFLAGS(Operator op)
static PhysicalDefUse.PDUEnumeration	enumerate(int code, IR ir)
static PhysicalDefUse.PDUEnumeration	enumerateAllImplicitDefUses(IR ir)
static String	getString(int code)
static boolean	usesEFLAGS(Operator op)
static boolean	usesOrDefinesESP(Operator op)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mask

public static final int mask

Default empty mask

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Constant Field Values

maskAF

public static final int maskAF

AF in the eflags is used/defined

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Constant Field Values

maskCF

public static final int maskCF

CF in the eflags is used/defined

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Constant Field Values

maskOF

public static final int maskOF

OF in the eflags is used/defined

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Constant Field Values

maskPF

public static final int maskPF

PF in the eflags is used/defined

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Constant Field Values

maskSF

public static final int maskSF

SF in the eflags is used/defined

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Constant Field Values

maskZF

public static final int maskZF

ZF in the eflags is used/defined

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Constant Field Values

maskC0

public static final int maskC0

C0 in the x87 FPU is used/defined

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Constant Field Values

maskC1

public static final int maskC1

C1 in the x87 FPU is used/defined

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Constant Field Values

maskC2

public static final int maskC2

C2 in the x87 FPU is used/defined

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Constant Field Values

maskC3

public static final int maskC3

C3 in the x87 FPU is used/defined

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Constant Field Values

maskTR

public static final int maskTR

The processor register is used/defined

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Constant Field Values

maskESP

public static final int maskESP

The ESP register is used/defined

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Constant Field Values

maskHIGH

private static final int maskHIGH

First mask bit

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Constant Field Values

maskALL

private static final int maskALL

Mask for all bits

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Constant Field Values

maskCF_OF

public static final int maskCF_OF

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Constant Field Values

maskCF_PF_ZF

public static final int maskCF_PF_ZF

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Constant Field Values

maskCF_OF_PF_SF_ZF

public static final int maskCF_OF_PF_SF_ZF

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Constant Field Values

maskAF_OF_PF_SF_ZF

public static final int maskAF_OF_PF_SF_ZF

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Constant Field Values

maskAF_CF_OF_PF_SF_ZF

public static final int maskAF_CF_OF_PF_SF_ZF

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Constant Field Values

maskC0_C1_C2_C3

public static final int maskC0_C1_C2_C3

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Constant Field Values

maskcallDefs

public static final int maskcallDefs

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Constant Field Values

maskcallUses

public static final int maskcallUses

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Constant Field Values

maskIEEEMagicUses

public static final int maskIEEEMagicUses

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Constant Field Values

maskTSPUses

public static final int maskTSPUses

Uses mask used by dependence graph to show a yield point

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Constant Field Values

maskTSPDefs

public static final int maskTSPDefs

Definitions mask used by dependence graph to show a yield point

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Constant Field Values

Constructor Detail

PhysicalDefUse

public PhysicalDefUse()

Method Detail

usesEFLAGS

public static boolean usesEFLAGS(Operator op)

definesEFLAGS

public static boolean definesEFLAGS(Operator op)

usesOrDefinesESP

public static boolean usesOrDefinesESP(Operator op)

getString

public static String getString(int code)

Parameters:

code - the encoding of physical registers

Returns:

a string representation of the physical registers encoded by an integer

enumerate

public static PhysicalDefUse.PDUEnumeration enumerate(int code,
                                                      IR ir)

Parameters:

code - an integer that encodes a set of physical registers

ir - the governing IR

Returns:

an enumeration of the physical registers embodied by a code

enumerateAllImplicitDefUses

public static PhysicalDefUse.PDUEnumeration enumerateAllImplicitDefUses(IR ir)

Parameters:

ir - the governing IR

Returns:

an enumeration of all physical registers that code be implicitly defed/used