v8::internal::CPURegList Class Reference

#include <assembler-arm64.h>

Collaboration diagram for v8::internal::CPURegList:

Public Member Functions
	CPURegList (CPURegister reg1, CPURegister reg2=NoCPUReg, CPURegister reg3=NoCPUReg, CPURegister reg4=NoCPUReg)
	CPURegList (CPURegister::RegisterType type, unsigned size, RegList list)
	CPURegList (CPURegister::RegisterType type, unsigned size, unsigned first_reg, unsigned last_reg)
CPURegister::RegisterType	type () const
RegList	list () const
void	set_list (RegList new_list)
void	Combine (const CPURegList &other)
void	Remove (const CPURegList &other)
void	Combine (const CPURegister &other)
void	Remove (const CPURegister &other1, const CPURegister &other2=NoCPUReg, const CPURegister &other3=NoCPUReg, const CPURegister &other4=NoCPUReg)
void	Combine (int code)
void	Remove (int code)
void	RemoveCalleeSaved ()
CPURegister	PopLowestIndex ()
CPURegister	PopHighestIndex ()
bool	IsEmpty () const
bool	IncludesAliasOf (const CPURegister &other1, const CPURegister &other2=NoCPUReg, const CPURegister &other3=NoCPUReg, const CPURegister &other4=NoCPUReg) const
int	Count () const
unsigned	RegisterSizeInBits () const
unsigned	RegisterSizeInBytes () const
unsigned	TotalSizeInBytes () const

Static Public Member Functions
static CPURegList	GetCalleeSaved (unsigned size=kXRegSizeInBits)
static CPURegList	GetCalleeSavedFP (unsigned size=kDRegSizeInBits)
static CPURegList	GetCallerSaved (unsigned size=kXRegSizeInBits)
static CPURegList	GetCallerSavedFP (unsigned size=kDRegSizeInBits)
static CPURegList	GetSafepointSavedRegisters ()

Private Member Functions
bool	IsValid () const

Private Attributes
RegList	list_
unsigned	size_
CPURegister::RegisterType	type_

Detailed Description

Definition at line 451 of file assembler-arm64.h.

Constructor & Destructor Documentation

CPURegList() [1/3]

v8::internal::CPURegList::CPURegList ( CPURegister  reg1, CPURegister  reg2 = NoCPUReg, CPURegister  reg3 = NoCPUReg, CPURegister  reg4 = NoCPUReg  )

inlineexplicit

Definition at line 453 of file assembler-arm64.h.

      : list_(reg1.Bit() | reg2.Bit() | reg3.Bit() | reg4.Bit()),
        size_(reg1.SizeInBits()), type_(reg1.type()) {
    DCHECK(AreSameSizeAndType(reg1, reg2, reg3, reg4));
    DCHECK(IsValid());
  }

References v8::internal::AreSameSizeAndType(), DCHECK, and IsValid().

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CPURegList() [2/3]

v8::internal::CPURegList::CPURegList ( CPURegister::RegisterType  type, unsigned  size, RegList  list  )

inline

Definition at line 463 of file assembler-arm64.h.

      : list_(list), size_(size), type_(type) {
    DCHECK(IsValid());
  }

References DCHECK, and IsValid().

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CPURegList() [3/3]

v8::internal::CPURegList::CPURegList ( CPURegister::RegisterType  type, unsigned  size, unsigned  first_reg, unsigned  last_reg  )

inline

Definition at line 468 of file assembler-arm64.h.

      : size_(size), type_(type) {
    DCHECK(((type == CPURegister::kRegister) &&
            (last_reg < kNumberOfRegisters)) ||
           ((type == CPURegister::kFPRegister) &&
            (last_reg < kNumberOfFPRegisters)));
    DCHECK(last_reg >= first_reg);
    list_ = (1UL << (last_reg + 1)) - 1;
    list_ &= ~((1UL << first_reg) - 1);
    DCHECK(IsValid());
  }

References DCHECK, IsValid(), v8::internal::CPURegister::kFPRegister, v8::internal::kNumberOfFPRegisters, v8::internal::kNumberOfRegisters, v8::internal::CPURegister::kRegister, list_, and type().

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Member Function Documentation

Combine() [1/3]

void v8::internal::CPURegList::Combine ( const CPURegister &  other )

inline

Definition at line 176 of file assembler-arm64-inl.h.

                                                        {
  DCHECK(other.type() == type_);
  DCHECK(other.SizeInBits() == size_);
  Combine(other.code());
}

References v8::internal::CPURegister::code(), Combine(), DCHECK, size_, v8::internal::CPURegister::SizeInBits(), v8::internal::CPURegister::type(), and type_.

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Combine() [2/3]

void v8::internal::CPURegList::Combine ( const CPURegList &  other )

inline

Definition at line 160 of file assembler-arm64-inl.h.

                                                       {
  DCHECK(IsValid());
  DCHECK(other.type() == type_);
  DCHECK(other.RegisterSizeInBits() == size_);
  list_ |= other.list();
}

References DCHECK, IsValid(), list(), list_, RegisterSizeInBits(), size_, type(), and type_.

Referenced by Combine().

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Combine() [3/3]

void v8::internal::CPURegList::Combine ( int  code )

inline

Definition at line 194 of file assembler-arm64-inl.h.

                                        {
  DCHECK(IsValid());
  DCHECK(CPURegister::Create(code, size_, type_).IsValid());
  list_ |= (1UL << code);
}

References v8::internal::CPURegister::Create(), DCHECK, IsValid(), list_, size_, and type_.

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Count()

int v8::internal::CPURegList::Count ( ) const

inline

Definition at line 554 of file assembler-arm64.h.

                    {
    DCHECK(IsValid());
    return CountSetBits(list_, kRegListSizeInBits);
  }

References v8::internal::CountSetBits(), DCHECK, IsValid(), v8::internal::kRegListSizeInBits, and list_.

Referenced by TotalSizeInBytes().

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GetCalleeSaved()

static CPURegList v8::internal::CPURegList::GetCalleeSaved ( unsigned  size = kXRegSizeInBits )

static

GetCalleeSavedFP()

static CPURegList v8::internal::CPURegList::GetCalleeSavedFP ( unsigned  size = kDRegSizeInBits )

static

GetCallerSaved()

static CPURegList v8::internal::CPURegList::GetCallerSaved ( unsigned  size = kXRegSizeInBits )

static

GetCallerSavedFP()

static CPURegList v8::internal::CPURegList::GetCallerSavedFP ( unsigned  size = kDRegSizeInBits )

static

GetSafepointSavedRegisters()

static CPURegList v8::internal::CPURegList::GetSafepointSavedRegisters ( )

static

IncludesAliasOf()

bool v8::internal::CPURegList::IncludesAliasOf ( const CPURegister &  other1, const CPURegister &  other2 = NoCPUReg, const CPURegister &  other3 = NoCPUReg, const CPURegister &  other4 = NoCPUReg  ) const

inline

Definition at line 541 of file assembler-arm64.h.

                                                                   {
    DCHECK(IsValid());
    RegList list = 0;
    if (!other1.IsNone() && (other1.type() == type_)) list |= other1.Bit();
    if (!other2.IsNone() && (other2.type() == type_)) list |= other2.Bit();
    if (!other3.IsNone() && (other3.type() == type_)) list |= other3.Bit();
    if (!other4.IsNone() && (other4.type() == type_)) list |= other4.Bit();
    return (list_ & list) != 0;
  }

References v8::internal::CPURegister::Bit(), DCHECK, v8::internal::CPURegister::IsNone(), IsValid(), list(), list_, v8::internal::CPURegister::type(), and type_.

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IsEmpty()

bool v8::internal::CPURegList::IsEmpty ( ) const

inline

Definition at line 536 of file assembler-arm64.h.

                       {
    DCHECK(IsValid());
    return list_ == 0;
  }

References DCHECK, IsValid(), and list_.

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IsValid()

bool v8::internal::CPURegList::IsValid ( ) const

inlineprivate

Definition at line 580 of file assembler-arm64.h.

                       {
    const RegList kValidRegisters = 0x8000000ffffffff;
    const RegList kValidFPRegisters = 0x0000000ffffffff;
    switch (type_) {
      case CPURegister::kRegister:
        return (list_ & kValidRegisters) == list_;
      case CPURegister::kFPRegister:
        return (list_ & kValidFPRegisters) == list_;
      case CPURegister::kNoRegister:
        return list_ == 0;
      default:
        UNREACHABLE();
        return false;
    }
  }

References v8::internal::CPURegister::kFPRegister, v8::internal::CPURegister::kNoRegister, v8::internal::CPURegister::kRegister, list_, type_, and UNREACHABLE.

Referenced by Combine(), Count(), CPURegList(), IncludesAliasOf(), IsEmpty(), list(), RegisterSizeInBits(), Remove(), set_list(), TotalSizeInBytes(), and type().

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list()

RegList v8::internal::CPURegList::list ( ) const

inline

Definition at line 486 of file assembler-arm64.h.

                       {
    DCHECK(IsValid());
    return list_;
  }

References DCHECK, IsValid(), and list_.

Referenced by Combine(), IncludesAliasOf(), and Remove().

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PopHighestIndex()

CPURegister v8::internal::CPURegList::PopHighestIndex

(

)

PopLowestIndex()

CPURegister v8::internal::CPURegList::PopLowestIndex

(

)

Referenced by v8::internal::RecordWriteStub::RegisterAllocation::RegisterAllocation().

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RegisterSizeInBits()

unsigned v8::internal::CPURegList::RegisterSizeInBits ( ) const

inline

Definition at line 559 of file assembler-arm64.h.

                                      {
    DCHECK(IsValid());
    return size_;
  }

References DCHECK, IsValid(), and size_.

Referenced by Combine(), and RegisterSizeInBytes().

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RegisterSizeInBytes()

unsigned v8::internal::CPURegList::RegisterSizeInBytes ( ) const

inline

Definition at line 564 of file assembler-arm64.h.

                                       {
    int size_in_bits = RegisterSizeInBits();
    DCHECK((size_in_bits % kBitsPerByte) == 0);
    return size_in_bits / kBitsPerByte;
  }

References DCHECK, v8::internal::kBitsPerByte, and RegisterSizeInBits().

Referenced by TotalSizeInBytes().

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Remove() [1/3]

void v8::internal::CPURegList::Remove ( const CPURegister &  other1, const CPURegister &  other2 = NoCPUReg, const CPURegister &  other3 = NoCPUReg, const CPURegister &  other4 = NoCPUReg  )

inline

Definition at line 183 of file assembler-arm64-inl.h.

                                                          {
  if (!other1.IsNone() && (other1.type() == type_)) Remove(other1.code());
  if (!other2.IsNone() && (other2.type() == type_)) Remove(other2.code());
  if (!other3.IsNone() && (other3.type() == type_)) Remove(other3.code());
  if (!other4.IsNone() && (other4.type() == type_)) Remove(other4.code());
}

References v8::internal::CPURegister::code(), v8::internal::CPURegister::IsNone(), Remove(), v8::internal::CPURegister::type(), and type_.

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Remove() [2/3]

void v8::internal::CPURegList::Remove ( const CPURegList &  other )

inline

Definition at line 168 of file assembler-arm64-inl.h.

                                                      {
  DCHECK(IsValid());
  if (other.type() == type_) {
    list_ &= ~other.list();
  }
}

References DCHECK, IsValid(), list(), list_, type(), and type_.

Referenced by v8::internal::RecordWriteStub::RegisterAllocation::GetValidRegistersForAllocation(), v8::internal::RecordWriteStub::RegisterAllocation::RegisterAllocation(), and Remove().

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Remove() [3/3]

void v8::internal::CPURegList::Remove ( int  code )

inline

Definition at line 201 of file assembler-arm64-inl.h.

                                       {
  DCHECK(IsValid());
  DCHECK(CPURegister::Create(code, size_, type_).IsValid());
  list_ &= ~(1UL << code);
}

References v8::internal::CPURegister::Create(), DCHECK, IsValid(), list_, size_, and type_.

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RemoveCalleeSaved()

void v8::internal::CPURegList::RemoveCalleeSaved

(

)

set_list()

void v8::internal::CPURegList::set_list ( RegList  new_list )

inline

Definition at line 491 of file assembler-arm64.h.

                                         {
    DCHECK(IsValid());
    list_ = new_list;
  }

References DCHECK, IsValid(), and list_.

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TotalSizeInBytes()

unsigned v8::internal::CPURegList::TotalSizeInBytes ( ) const

inline

Definition at line 570 of file assembler-arm64.h.

                                    {
    DCHECK(IsValid());
    return RegisterSizeInBytes() * Count();
  }

References Count(), DCHECK, IsValid(), and RegisterSizeInBytes().

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type()

CPURegister::RegisterType v8::internal::CPURegList::type ( ) const

inline

Definition at line 481 of file assembler-arm64.h.

                                       {
    DCHECK(IsValid());
    return type_;
  }

References DCHECK, IsValid(), and type_.

Referenced by Combine(), CPURegList(), Remove(), and v8::internal::UseScratchRegisterScope::UseScratchRegisterScope().

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Member Data Documentation

list_

RegList v8::internal::CPURegList::list_

private

Definition at line 576 of file assembler-arm64.h.

Referenced by Combine(), Count(), CPURegList(), IncludesAliasOf(), IsEmpty(), IsValid(), list(), Remove(), and set_list().

size_

unsigned v8::internal::CPURegList::size_

private

Definition at line 577 of file assembler-arm64.h.

Referenced by Combine(), RegisterSizeInBits(), and Remove().

type_

CPURegister::RegisterType v8::internal::CPURegList::type_

private

Definition at line 578 of file assembler-arm64.h.

Referenced by Combine(), IncludesAliasOf(), IsValid(), Remove(), and type().

---

The documentation for this class was generated from the following files:

• /mnt/V8SourceCode/src/arm64/assembler-arm64.h
• /mnt/V8SourceCode/src/arm64/assembler-arm64-inl.h