V8 Project
Classes | Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | Static Protected Attributes | List of all members
v8::internal::LOperand Class Reference

#include <lithium.h>

+ Inheritance diagram for v8::internal::LOperand:
+ Collaboration diagram for v8::internal::LOperand:

Classes

class  KindField
 

Public Types

enum  Kind {
  INVALID , UNALLOCATED , CONSTANT_OPERAND , STACK_SLOT ,
  DOUBLE_STACK_SLOT , REGISTER , DOUBLE_REGISTER
}
 

Public Member Functions

 LOperand ()
 
Kind kind () const
 
int index () const
 
bool Equals (LOperand *other) const
 
void PrintTo (StringStream *stream)
 
void ConvertTo (Kind kind, int index)
 
- Public Member Functions inherited from v8::internal::ZoneObject
 INLINE (void *operator new(size_t size, Zone *zone))
 
void operator delete (void *, size_t)
 
void operator delete (void *pointer, Zone *zone)
 

Static Public Member Functions

static void SetUpCaches ()
 
static void TearDownCaches ()
 

Protected Member Functions

 LOperand (Kind kind, int index)
 

Protected Attributes

unsigned value_
 

Static Protected Attributes

static const int kKindFieldWidth = 3
 

Detailed Description

Definition at line 26 of file lithium.h.

Member Enumeration Documentation

◆ Kind

enum v8::internal::LOperand::Kind
Enumerator
INVALID 
UNALLOCATED 
CONSTANT_OPERAND 
STACK_SLOT 
DOUBLE_STACK_SLOT 
REGISTER 
DOUBLE_REGISTER 

Definition at line 28 of file lithium.h.

28  {
29  INVALID,
30  UNALLOCATED,
31  CONSTANT_OPERAND,
32  STACK_SLOT,
33  DOUBLE_STACK_SLOT,
34  REGISTER,
35  DOUBLE_REGISTER
36  };

Constructor & Destructor Documentation

◆ LOperand() [1/2]

v8::internal::LOperand::LOperand ( )
inline

Definition at line 38 of file lithium.h.

38 : value_(KindField::encode(INVALID)) { }
v8::internal::BitFieldBase::encode
static U encode(T value)
Definition: utils.h:217

◆ LOperand() [2/2]

v8::internal::LOperand::LOperand ( Kind  kind,
int  index 
)
inlineprotected

Definition at line 66 of file lithium.h.

66 { ConvertTo(kind, index); }
v8::internal::LOperand::ConvertTo
void ConvertTo(Kind kind, int index)
Definition: lithium.h:51
v8::internal::LOperand::kind
Kind kind() const
Definition: lithium.h:40
v8::internal::LOperand::index
int index() const
Definition: lithium.h:41

References ConvertTo(), index(), and kind().

+ Here is the call graph for this function:

Member Function Documentation

◆ ConvertTo()

void v8::internal::LOperand::ConvertTo ( Kind  kind,
int  index 
)
inline

Definition at line 51 of file lithium.h.

51  {
52  if (kind == REGISTER) DCHECK(index >= 0);
53  value_ = KindField::encode(kind);
54  value_ |= index << kKindFieldWidth;
55  DCHECK(this->index() == index);
56  }
v8::internal::LOperand::kKindFieldWidth
static const int kKindFieldWidth
Definition: lithium.h:63
DCHECK
#define DCHECK(condition)
Definition: logging.h:205

References DCHECK, v8::internal::BitFieldBase< T, shift, size, U >::encode(), index(), kind(), kKindFieldWidth, REGISTER, and value_.

Referenced by v8::internal::LiveRange::ConvertOperands(), LOperand(), and v8::internal::LiveRange::SetSpillOperand().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

◆ Equals()

bool v8::internal::LOperand::Equals ( LOperand *  other) const
inline

Definition at line 48 of file lithium.h.

48 { return value_ == other->value_; }

References value_.

◆ index()

int v8::internal::LOperand::index ( ) const
inline

Definition at line 41 of file lithium.h.

41 { return static_cast<int>(value_) >> kKindFieldWidth; }

References kKindFieldWidth, and value_.

Referenced by v8::internal::LCodeGen::AddToTranslation(), v8::internal::LiveRange::ConvertOperands(), ConvertTo(), v8::internal::LCodeGen::EmitLoadDoubleRegister(), v8::internal::LCodeGen::EmitLoadRegister(), LOperand(), v8::internal::LUnallocated::LUnallocated(), PrintTo(), v8::internal::LCodeGen::RecordSafepoint(), v8::internal::LiveRange::SetSpillOperand(), v8::internal::LCodeGen::ToDoubleRegister(), v8::internal::LCodeGen::ToHighMemOperand(), v8::internal::LCodeGen::ToMemOperand(), and v8::internal::LCodeGen::ToRegister().

+ Here is the caller graph for this function:

◆ kind()

Kind v8::internal::LOperand::kind ( ) const
inline

Definition at line 40 of file lithium.h.

40 { return KindField::decode(value_); }
v8::internal::BitFieldBase::decode
static T decode(U value)
Definition: utils.h:228

References v8::internal::BitFieldBase< T, shift, size, U >::decode(), and value_.

Referenced by v8::internal::FINAL< kOperandKind, kNumCachedOperands >::cast(), v8::internal::LiveRange::ConvertOperands(), ConvertTo(), LOperand(), PrintTo(), and v8::internal::LiveRange::SetSpillOperand().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

◆ PrintTo()

void v8::internal::LOperand::PrintTo ( StringStream *  stream)

Definition at line 41 of file lithium.cc.

41  {
42  LUnallocated* unalloc = NULL;
43  switch (kind()) {
44  case INVALID:
45  stream->Add("(0)");
46  break;
47  case UNALLOCATED:
48  unalloc = LUnallocated::cast(this);
49  stream->Add("v%d", unalloc->virtual_register());
50  if (unalloc->basic_policy() == LUnallocated::FIXED_SLOT) {
51  stream->Add("(=%dS)", unalloc->fixed_slot_index());
52  break;
53  }
54  switch (unalloc->extended_policy()) {
55  case LUnallocated::NONE:
56  break;
57  case LUnallocated::FIXED_REGISTER: {
58  int reg_index = unalloc->fixed_register_index();
59  if (reg_index < 0 ||
60  reg_index >= Register::kMaxNumAllocatableRegisters) {
61  stream->Add("(=invalid_reg#%d)", reg_index);
62  } else {
63  const char* register_name =
64  Register::AllocationIndexToString(reg_index);
65  stream->Add("(=%s)", register_name);
66  }
67  break;
68  }
69  case LUnallocated::FIXED_DOUBLE_REGISTER: {
70  int reg_index = unalloc->fixed_register_index();
71  if (reg_index < 0 ||
72  reg_index >= DoubleRegister::kMaxNumAllocatableRegisters) {
73  stream->Add("(=invalid_double_reg#%d)", reg_index);
74  } else {
75  const char* double_register_name =
76  DoubleRegister::AllocationIndexToString(reg_index);
77  stream->Add("(=%s)", double_register_name);
78  }
79  break;
80  }
81  case LUnallocated::MUST_HAVE_REGISTER:
82  stream->Add("(R)");
83  break;
84  case LUnallocated::MUST_HAVE_DOUBLE_REGISTER:
85  stream->Add("(D)");
86  break;
87  case LUnallocated::WRITABLE_REGISTER:
88  stream->Add("(WR)");
89  break;
90  case LUnallocated::SAME_AS_FIRST_INPUT:
91  stream->Add("(1)");
92  break;
93  case LUnallocated::ANY:
94  stream->Add("(-)");
95  break;
96  }
97  break;
98  case CONSTANT_OPERAND:
99  stream->Add("[constant:%d]", index());
100  break;
101  case STACK_SLOT:
102  stream->Add("[stack:%d]", index());
103  break;
104  case DOUBLE_STACK_SLOT:
105  stream->Add("[double_stack:%d]", index());
106  break;
107  case REGISTER: {
108  int reg_index = index();
109  if (reg_index < 0 || reg_index >= Register::kMaxNumAllocatableRegisters) {
110  stream->Add("(=invalid_reg#%d|R)", reg_index);
111  } else {
112  stream->Add("[%s|R]", Register::AllocationIndexToString(reg_index));
113  }
114  break;
115  }
116  case DOUBLE_REGISTER: {
117  int reg_index = index();
118  if (reg_index < 0 ||
119  reg_index >= DoubleRegister::kMaxNumAllocatableRegisters) {
120  stream->Add("(=invalid_double_reg#%d|R)", reg_index);
121  } else {
122  stream->Add("[%s|R]",
123  DoubleRegister::AllocationIndexToString(reg_index));
124  }
125  break;
126  }
127  }
128 }
v8::internal::LUnallocated::cast
static LUnallocated * cast(LOperand *op)
Definition: lithium.h:138
NULL
enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be NULL
Definition: flag-definitions.h:407
v8::internal::DwVfpRegister::AllocationIndexToString
static const char * AllocationIndexToString(int index)
v8::internal::DwVfpRegister::kMaxNumAllocatableRegisters
static const int kMaxNumAllocatableRegisters
Definition: assembler-arm.h:210
v8::internal::Register::AllocationIndexToString
static const char * AllocationIndexToString(int index)
Definition: assembler-arm.h:112
v8::internal::Register::kMaxNumAllocatableRegisters
static const int kMaxNumAllocatableRegisters
Definition: assembler-arm.h:96

References v8::internal::Register::AllocationIndexToString(), v8::internal::DwVfpRegister::AllocationIndexToString(), v8::internal::LUnallocated::ANY, v8::internal::LUnallocated::basic_policy(), v8::internal::LUnallocated::cast(), CONSTANT_OPERAND, DOUBLE_REGISTER, DOUBLE_STACK_SLOT, v8::internal::LUnallocated::extended_policy(), v8::internal::LUnallocated::FIXED_DOUBLE_REGISTER, v8::internal::LUnallocated::FIXED_REGISTER, v8::internal::LUnallocated::fixed_register_index(), v8::internal::LUnallocated::FIXED_SLOT, v8::internal::LUnallocated::fixed_slot_index(), index(), INVALID, kind(), v8::internal::Register::kMaxNumAllocatableRegisters, v8::internal::DwVfpRegister::kMaxNumAllocatableRegisters, v8::internal::LUnallocated::MUST_HAVE_DOUBLE_REGISTER, v8::internal::LUnallocated::MUST_HAVE_REGISTER, v8::internal::LUnallocated::NONE, NULL, REGISTER, v8::internal::LUnallocated::SAME_AS_FIRST_INPUT, STACK_SLOT, UNALLOCATED, v8::internal::LUnallocated::virtual_register(), and v8::internal::LUnallocated::WRITABLE_REGISTER.

Referenced by v8::internal::LInstruction::PrintDataTo(), and v8::internal::LInstruction::PrintOutputOperandTo().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

◆ SetUpCaches()

void v8::internal::LOperand::SetUpCaches ( )
static

Definition at line 153 of file lithium.cc.

153  {
154 #define LITHIUM_OPERAND_SETUP(name, type, number) L##name::SetUpCache();
155  LITHIUM_OPERAND_LIST(LITHIUM_OPERAND_SETUP)
156 #undef LITHIUM_OPERAND_SETUP
157 }
LITHIUM_OPERAND_SETUP
#define LITHIUM_OPERAND_SETUP(name, type, number)
LITHIUM_OPERAND_LIST
#define LITHIUM_OPERAND_LIST(V)
Definition: lithium.h:19

References LITHIUM_OPERAND_LIST, and LITHIUM_OPERAND_SETUP.

Referenced by v8::internal::V8::InitializeOncePerProcessImpl().

+ Here is the caller graph for this function:

◆ TearDownCaches()

void v8::internal::LOperand::TearDownCaches ( )
static

Definition at line 160 of file lithium.cc.

160  {
161 #define LITHIUM_OPERAND_TEARDOWN(name, type, number) L##name::TearDownCache();
162  LITHIUM_OPERAND_LIST(LITHIUM_OPERAND_TEARDOWN)
163 #undef LITHIUM_OPERAND_TEARDOWN
164 }
LITHIUM_OPERAND_TEARDOWN
#define LITHIUM_OPERAND_TEARDOWN(name, type, number)

References LITHIUM_OPERAND_LIST, and LITHIUM_OPERAND_TEARDOWN.

Referenced by v8::internal::V8::TearDown().

+ Here is the caller graph for this function:

Member Data Documentation

◆ kKindFieldWidth

const int v8::internal::LOperand::kKindFieldWidth = 3
staticprotected

Definition at line 63 of file lithium.h.

Referenced by ConvertTo(), and index().

◆ value_

unsigned v8::internal::LOperand::value_
protected

Definition at line 68 of file lithium.h.

Referenced by v8::internal::LUnallocated::basic_policy(), ConvertTo(), Equals(), v8::internal::LUnallocated::extended_policy(), v8::internal::LUnallocated::fixed_register_index(), v8::internal::LUnallocated::fixed_slot_index(), index(), v8::internal::LUnallocated::IsUsedAtStart(), kind(), v8::internal::LUnallocated::LUnallocated(), v8::internal::LUnallocated::set_virtual_register(), and v8::internal::LUnallocated::virtual_register().

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