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cobalt / cobalt / d091d43cec3c83208e5995c85db1fd212391cc45 / . / src / v8 / src / codegen / code-stub-assembler.h
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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_CODEGEN_CODE_STUB_ASSEMBLER_H_
#define V8_CODEGEN_CODE_STUB_ASSEMBLER_H_
#include <functional>
#include "src/base/macros.h"
#include "src/codegen/bailout-reason.h"
#include "src/common/globals.h"
#include "src/common/message-template.h"
#include "src/compiler/code-assembler.h"
#include "src/objects/arguments.h"
#include "src/objects/bigint.h"
#include "src/objects/objects.h"
#include "src/objects/shared-function-info.h"
#include "src/objects/smi.h"
#include "src/roots/roots.h"
#include "torque-generated/exported-macros-assembler-tq.h"
namespace v8 {
namespace internal {
class CallInterfaceDescriptor;
class CodeStubArguments;
class CodeStubAssembler;
class StatsCounter;
class StubCache;
enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol };
#define HEAP_MUTABLE_IMMOVABLE_OBJECT_LIST(V) \
V(ArraySpeciesProtector, array_species_protector, ArraySpeciesProtector) \
V(PromiseSpeciesProtector, promise_species_protector, \
PromiseSpeciesProtector) \
V(TypedArraySpeciesProtector, typed_array_species_protector, \
TypedArraySpeciesProtector) \
#define HEAP_IMMUTABLE_IMMOVABLE_OBJECT_LIST(V) \
V(AccessorInfoMap, accessor_info_map, AccessorInfoMap) \
V(AccessorPairMap, accessor_pair_map, AccessorPairMap) \
V(AllocationSiteWithWeakNextMap, allocation_site_map, AllocationSiteMap) \
V(AllocationSiteWithoutWeakNextMap, allocation_site_without_weaknext_map, \
AllocationSiteWithoutWeakNextMap) \
V(BooleanMap, boolean_map, BooleanMap) \
V(CodeMap, code_map, CodeMap) \
V(EmptyFixedArray, empty_fixed_array, EmptyFixedArray) \
V(EmptyPropertyDictionary, empty_property_dictionary, \
EmptyPropertyDictionary) \
V(EmptySlowElementDictionary, empty_slow_element_dictionary, \
EmptySlowElementDictionary) \
V(empty_string, empty_string, EmptyString) \
V(FalseValue, false_value, False) \
V(FeedbackVectorMap, feedback_vector_map, FeedbackVectorMap) \
V(FixedArrayMap, fixed_array_map, FixedArrayMap) \
V(FixedCOWArrayMap, fixed_cow_array_map, FixedCOWArrayMap) \
V(FixedDoubleArrayMap, fixed_double_array_map, FixedDoubleArrayMap) \
V(FunctionTemplateInfoMap, function_template_info_map, \
FunctionTemplateInfoMap) \
V(GlobalPropertyCellMap, global_property_cell_map, PropertyCellMap) \
V(has_instance_symbol, has_instance_symbol, HasInstanceSymbol) \
V(HeapNumberMap, heap_number_map, HeapNumberMap) \
V(iterator_symbol, iterator_symbol, IteratorSymbol) \
V(length_string, length_string, LengthString) \
V(ManyClosuresCellMap, many_closures_cell_map, ManyClosuresCellMap) \
V(MetaMap, meta_map, MetaMap) \
V(MinusZeroValue, minus_zero_value, MinusZero) \
V(MutableHeapNumberMap, mutable_heap_number_map, MutableHeapNumberMap) \
V(NanValue, nan_value, Nan) \
V(NoClosuresCellMap, no_closures_cell_map, NoClosuresCellMap) \
V(NullValue, null_value, Null) \
V(OneClosureCellMap, one_closure_cell_map, OneClosureCellMap) \
V(PreparseDataMap, preparse_data_map, PreparseDataMap) \
V(prototype_string, prototype_string, PrototypeString) \
V(SharedFunctionInfoMap, shared_function_info_map, SharedFunctionInfoMap) \
V(StoreHandler0Map, store_handler0_map, StoreHandler0Map) \
V(SymbolMap, symbol_map, SymbolMap) \
V(TheHoleValue, the_hole_value, TheHole) \
V(TransitionArrayMap, transition_array_map, TransitionArrayMap) \
V(TrueValue, true_value, True) \
V(Tuple2Map, tuple2_map, Tuple2Map) \
V(Tuple3Map, tuple3_map, Tuple3Map) \
V(ArrayBoilerplateDescriptionMap, array_boilerplate_description_map, \
ArrayBoilerplateDescriptionMap) \
V(UncompiledDataWithoutPreparseDataMap, \
uncompiled_data_without_preparse_data_map, \
UncompiledDataWithoutPreparseDataMap) \
V(UncompiledDataWithPreparseDataMap, uncompiled_data_with_preparse_data_map, \
UncompiledDataWithPreparseDataMap) \
V(UndefinedValue, undefined_value, Undefined) \
V(WeakFixedArrayMap, weak_fixed_array_map, WeakFixedArrayMap)
#define HEAP_IMMOVABLE_OBJECT_LIST(V) \
HEAP_MUTABLE_IMMOVABLE_OBJECT_LIST(V) \
HEAP_IMMUTABLE_IMMOVABLE_OBJECT_LIST(V)
#ifdef DEBUG
#define CSA_CHECK(csa, x) \
(csa)->Check( \
[&]() -> compiler::Node* { \
return implicit_cast<compiler::SloppyTNode<Word32T>>(x); \
}, \
#x, __FILE__, __LINE__)
#else
#define CSA_CHECK(csa, x) (csa)->FastCheck(x)
#endif
#ifdef DEBUG
// CSA_ASSERT_ARGS generates an
// std::initializer_list<CodeStubAssembler::ExtraNode> from __VA_ARGS__. It
// currently supports between 0 and 2 arguments.
// clang-format off
#define CSA_ASSERT_0_ARGS(...) {}
#define CSA_ASSERT_1_ARG(a, ...) {{a, #a}}
#define CSA_ASSERT_2_ARGS(a, b, ...) {{a, #a}, {b, #b}}
// clang-format on
#define SWITCH_CSA_ASSERT_ARGS(dummy, a, b, FUNC, ...) FUNC(a, b)
#define CSA_ASSERT_ARGS(...) \
SWITCH_CSA_ASSERT_ARGS(dummy, ##__VA_ARGS__, CSA_ASSERT_2_ARGS, \
CSA_ASSERT_1_ARG, CSA_ASSERT_0_ARGS)
// CSA_ASSERT(csa, <condition>, <extra values to print...>)
#define CSA_ASSERT(csa, condition_node, ...) \
(csa)->Assert( \
[&]() -> compiler::Node* { \
return implicit_cast<compiler::SloppyTNode<Word32T>>(condition_node); \
}, \
#condition_node, __FILE__, __LINE__, CSA_ASSERT_ARGS(__VA_ARGS__))
// CSA_ASSERT_BRANCH(csa, [](Label* ok, Label* not_ok) {...},
// <extra values to print...>)
#define CSA_ASSERT_BRANCH(csa, gen, ...) \
(csa)->Assert(gen, #gen, __FILE__, __LINE__, CSA_ASSERT_ARGS(__VA_ARGS__))
#define CSA_ASSERT_JS_ARGC_OP(csa, Op, op, expected) \
(csa)->Assert( \
[&]() -> compiler::Node* { \
compiler::Node* const argc = \
(csa)->Parameter(Descriptor::kJSActualArgumentsCount); \
return (csa)->Op(argc, (csa)->Int32Constant(expected)); \
}, \
"argc " #op " " #expected, __FILE__, __LINE__, \
{{SmiFromInt32((csa)->Parameter(Descriptor::kJSActualArgumentsCount)), \
"argc"}})
#define CSA_ASSERT_JS_ARGC_EQ(csa, expected) \
CSA_ASSERT_JS_ARGC_OP(csa, Word32Equal, ==, expected)
#define CSA_DEBUG_INFO(name) \
{ #name, __FILE__, __LINE__ }
#define BIND(label) Bind(label, CSA_DEBUG_INFO(label))
#define VARIABLE(name, ...) \
Variable name(this, CSA_DEBUG_INFO(name), __VA_ARGS__)
#define VARIABLE_CONSTRUCTOR(name, ...) \
name(this, CSA_DEBUG_INFO(name), __VA_ARGS__)
#define TYPED_VARIABLE_DEF(type, name, ...) \
TVariable<type> name(CSA_DEBUG_INFO(name), __VA_ARGS__)
#else // DEBUG
#define CSA_ASSERT(csa, ...) ((void)0)
#define CSA_ASSERT_BRANCH(csa, ...) ((void)0)
#define CSA_ASSERT_JS_ARGC_EQ(csa, expected) ((void)0)
#define BIND(label) Bind(label)
#define VARIABLE(name, ...) Variable name(this, __VA_ARGS__)
#define VARIABLE_CONSTRUCTOR(name, ...) name(this, __VA_ARGS__)
#define TYPED_VARIABLE_DEF(type, name, ...) TVariable<type> name(__VA_ARGS__)
#endif // DEBUG
#define TVARIABLE(...) EXPAND(TYPED_VARIABLE_DEF(__VA_ARGS__, this))
#ifdef ENABLE_SLOW_DCHECKS
#define CSA_SLOW_ASSERT(csa, ...) \
if (FLAG_enable_slow_asserts) { \
CSA_ASSERT(csa, __VA_ARGS__); \
}
#else
#define CSA_SLOW_ASSERT(csa, ...) ((void)0)
#endif
// Provides JavaScript-specific "macro-assembler" functionality on top of the
// CodeAssembler. By factoring the JavaScript-isms out of the CodeAssembler,
// it's possible to add JavaScript-specific useful CodeAssembler "macros"
// without modifying files in the compiler directory (and requiring a review
// from a compiler directory OWNER).
class V8_EXPORT_PRIVATE CodeStubAssembler
: public compiler::CodeAssembler,
public TorqueGeneratedExportedMacrosAssembler {
public:
using Node = compiler::Node;
template <class T>
using TNode = compiler::TNode<T>;
template <class T>
using SloppyTNode = compiler::SloppyTNode<T>;
template <typename T>
using LazyNode = std::function<TNode<T>()>;
explicit CodeStubAssembler(compiler::CodeAssemblerState* state);
enum AllocationFlag : uint8_t {
kNone = 0,
kDoubleAlignment = 1,
kPretenured = 1 << 1,
kAllowLargeObjectAllocation = 1 << 2,
};
enum SlackTrackingMode { kWithSlackTracking, kNoSlackTracking };
using AllocationFlags = base::Flags<AllocationFlag>;
enum ParameterMode { SMI_PARAMETERS, INTPTR_PARAMETERS };
// On 32-bit platforms, there is a slight performance advantage to doing all
// of the array offset/index arithmetic with SMIs, since it's possible
// to save a few tag/untag operations without paying an extra expense when
// calculating array offset (the smi math can be folded away) and there are
// fewer live ranges. Thus only convert indices to untagged value on 64-bit
// platforms.
ParameterMode OptimalParameterMode() const {
return Is64() ? INTPTR_PARAMETERS : SMI_PARAMETERS;
}
MachineRepresentation ParameterRepresentation(ParameterMode mode) const {
return mode == INTPTR_PARAMETERS ? MachineType::PointerRepresentation()
: MachineRepresentation::kTaggedSigned;
}
MachineRepresentation OptimalParameterRepresentation() const {
return ParameterRepresentation(OptimalParameterMode());
}
TNode<IntPtrT> ParameterToIntPtr(Node* value, ParameterMode mode) {
if (mode == SMI_PARAMETERS) value = SmiUntag(value);
return UncheckedCast<IntPtrT>(value);
}
Node* IntPtrToParameter(SloppyTNode<IntPtrT> value, ParameterMode mode) {
if (mode == SMI_PARAMETERS) return SmiTag(value);
return value;
}
Node* Int32ToParameter(SloppyTNode<Int32T> value, ParameterMode mode) {
return IntPtrToParameter(ChangeInt32ToIntPtr(value), mode);
}
TNode<Smi> ParameterToTagged(Node* value, ParameterMode mode) {
if (mode != SMI_PARAMETERS) return SmiTag(value);
return UncheckedCast<Smi>(value);
}
Node* TaggedToParameter(SloppyTNode<Smi> value, ParameterMode mode) {
if (mode != SMI_PARAMETERS) return SmiUntag(value);
return value;
}
bool ToParameterConstant(Node* node, intptr_t* out, ParameterMode mode) {
if (mode == ParameterMode::SMI_PARAMETERS) {
Smi constant;
if (ToSmiConstant(node, &constant)) {
*out = static_cast<intptr_t>(constant.value());
return true;
}
} else {
DCHECK_EQ(mode, ParameterMode::INTPTR_PARAMETERS);
intptr_t constant;
if (ToIntPtrConstant(node, constant)) {
*out = constant;
return true;
}
}
return false;
}
#if defined(V8_HOST_ARCH_32_BIT)
TNode<Smi> BIntToSmi(TNode<BInt> source) { return source; }
TNode<IntPtrT> BIntToIntPtr(TNode<BInt> source) {
return SmiToIntPtr(source);
}
TNode<BInt> SmiToBInt(TNode<Smi> source) { return source; }
TNode<BInt> IntPtrToBInt(TNode<IntPtrT> source) {
return SmiFromIntPtr(source);
}
#elif defined(V8_HOST_ARCH_64_BIT)
TNode<Smi> BIntToSmi(TNode<BInt> source) { return SmiFromIntPtr(source); }
TNode<IntPtrT> BIntToIntPtr(TNode<BInt> source) { return source; }
TNode<BInt> SmiToBInt(TNode<Smi> source) { return SmiToIntPtr(source); }
TNode<BInt> IntPtrToBInt(TNode<IntPtrT> source) { return source; }
#else
#error Unknown architecture.
#endif
TNode<Smi> TaggedToSmi(TNode<Object> value, Label* fail) {
GotoIf(TaggedIsNotSmi(value), fail);
return UncheckedCast<Smi>(value);
}
TNode<Smi> TaggedToPositiveSmi(TNode<Object> value, Label* fail) {
GotoIfNot(TaggedIsPositiveSmi(value), fail);
return UncheckedCast<Smi>(value);
}
TNode<String> TaggedToDirectString(TNode<Object> value, Label* fail);
TNode<Number> TaggedToNumber(TNode<Object> value, Label* fail) {
GotoIfNot(IsNumber(value), fail);
return UncheckedCast<Number>(value);
}
TNode<HeapObject> TaggedToHeapObject(TNode<Object> value, Label* fail) {
GotoIf(TaggedIsSmi(value), fail);
return UncheckedCast<HeapObject>(value);
}
TNode<JSArray> HeapObjectToJSArray(TNode<HeapObject> heap_object,
Label* fail) {
GotoIfNot(IsJSArray(heap_object), fail);
return UncheckedCast<JSArray>(heap_object);
}
TNode<JSArrayBuffer> HeapObjectToJSArrayBuffer(TNode<HeapObject> heap_object,
Label* fail) {
GotoIfNot(IsJSArrayBuffer(heap_object), fail);
return UncheckedCast<JSArrayBuffer>(heap_object);
}
TNode<JSArray> TaggedToFastJSArray(TNode<Context> context,
TNode<Object> value, Label* fail) {
GotoIf(TaggedIsSmi(value), fail);
TNode<HeapObject> heap_object = CAST(value);
GotoIfNot(IsFastJSArray(heap_object, context), fail);
return UncheckedCast<JSArray>(heap_object);
}
TNode<JSDataView> HeapObjectToJSDataView(TNode<HeapObject> heap_object,
Label* fail) {
GotoIfNot(IsJSDataView(heap_object), fail);
return CAST(heap_object);
}
TNode<JSProxy> HeapObjectToJSProxy(TNode<HeapObject> heap_object,
Label* fail) {
GotoIfNot(IsJSProxy(heap_object), fail);
return CAST(heap_object);
}
TNode<JSStringIterator> HeapObjectToJSStringIterator(
TNode<HeapObject> heap_object, Label* fail) {
GotoIfNot(IsJSStringIterator(heap_object), fail);
return CAST(heap_object);
}
TNode<JSReceiver> HeapObjectToCallable(TNode<HeapObject> heap_object,
Label* fail) {
GotoIfNot(IsCallable(heap_object), fail);
return CAST(heap_object);
}
TNode<String> HeapObjectToString(TNode<HeapObject> heap_object, Label* fail) {
GotoIfNot(IsString(heap_object), fail);
return CAST(heap_object);
}
TNode<JSReceiver> HeapObjectToConstructor(TNode<HeapObject> heap_object,
Label* fail) {
GotoIfNot(IsConstructor(heap_object), fail);
return CAST(heap_object);
}
Node* MatchesParameterMode(Node* value, ParameterMode mode);
#define PARAMETER_BINOP(OpName, IntPtrOpName, SmiOpName) \
Node* OpName(Node* a, Node* b, ParameterMode mode) { \
if (mode == SMI_PARAMETERS) { \
return SmiOpName(CAST(a), CAST(b)); \
} else { \
DCHECK_EQ(INTPTR_PARAMETERS, mode); \
return IntPtrOpName(a, b); \
} \
}
PARAMETER_BINOP(IntPtrOrSmiMin, IntPtrMin, SmiMin)
PARAMETER_BINOP(IntPtrOrSmiAdd, IntPtrAdd, SmiAdd)
PARAMETER_BINOP(IntPtrOrSmiSub, IntPtrSub, SmiSub)
PARAMETER_BINOP(IntPtrOrSmiLessThan, IntPtrLessThan, SmiLessThan)
PARAMETER_BINOP(IntPtrOrSmiLessThanOrEqual, IntPtrLessThanOrEqual,
SmiLessThanOrEqual)
PARAMETER_BINOP(IntPtrOrSmiGreaterThan, IntPtrGreaterThan, SmiGreaterThan)
PARAMETER_BINOP(IntPtrOrSmiGreaterThanOrEqual, IntPtrGreaterThanOrEqual,
SmiGreaterThanOrEqual)
PARAMETER_BINOP(UintPtrOrSmiLessThan, UintPtrLessThan, SmiBelow)
PARAMETER_BINOP(UintPtrOrSmiGreaterThanOrEqual, UintPtrGreaterThanOrEqual,
SmiAboveOrEqual)
#undef PARAMETER_BINOP
uintptr_t ConstexprUintPtrShl(uintptr_t a, int32_t b) { return a << b; }
uintptr_t ConstexprUintPtrShr(uintptr_t a, int32_t b) { return a >> b; }
intptr_t ConstexprIntPtrAdd(intptr_t a, intptr_t b) { return a + b; }
uintptr_t ConstexprUintPtrAdd(uintptr_t a, uintptr_t b) { return a + b; }
intptr_t ConstexprWordNot(intptr_t a) { return ~a; }
uintptr_t ConstexprWordNot(uintptr_t a) { return ~a; }
TNode<Object> NoContextConstant();
#define HEAP_CONSTANT_ACCESSOR(rootIndexName, rootAccessorName, name) \
compiler::TNode<std::remove_pointer<std::remove_reference<decltype( \
std::declval<ReadOnlyRoots>().rootAccessorName())>::type>::type> \
name##Constant();
HEAP_IMMUTABLE_IMMOVABLE_OBJECT_LIST(HEAP_CONSTANT_ACCESSOR)
#undef HEAP_CONSTANT_ACCESSOR
#define HEAP_CONSTANT_ACCESSOR(rootIndexName, rootAccessorName, name) \
compiler::TNode<std::remove_pointer<std::remove_reference<decltype( \
std::declval<Heap>().rootAccessorName())>::type>::type> \
name##Constant();
HEAP_MUTABLE_IMMOVABLE_OBJECT_LIST(HEAP_CONSTANT_ACCESSOR)
#undef HEAP_CONSTANT_ACCESSOR
#define HEAP_CONSTANT_TEST(rootIndexName, rootAccessorName, name) \
TNode<BoolT> Is##name(SloppyTNode<Object> value); \
TNode<BoolT> IsNot##name(SloppyTNode<Object> value);
HEAP_IMMOVABLE_OBJECT_LIST(HEAP_CONSTANT_TEST)
#undef HEAP_CONSTANT_TEST
Node* IntPtrOrSmiConstant(int value, ParameterMode mode);
bool IsIntPtrOrSmiConstantZero(Node* test, ParameterMode mode);
bool TryGetIntPtrOrSmiConstantValue(Node* maybe_constant, int* value,
ParameterMode mode);
// Round the 32bits payload of the provided word up to the next power of two.
TNode<IntPtrT> IntPtrRoundUpToPowerOfTwo32(TNode<IntPtrT> value);
// Select the maximum of the two provided IntPtr values.
TNode<IntPtrT> IntPtrMax(SloppyTNode<IntPtrT> left,
SloppyTNode<IntPtrT> right);
// Select the minimum of the two provided IntPtr values.
TNode<IntPtrT> IntPtrMin(SloppyTNode<IntPtrT> left,
SloppyTNode<IntPtrT> right);
// Float64 operations.
TNode<Float64T> Float64Ceil(SloppyTNode<Float64T> x);
TNode<Float64T> Float64Floor(SloppyTNode<Float64T> x);
TNode<Float64T> Float64Round(SloppyTNode<Float64T> x);
TNode<Float64T> Float64RoundToEven(SloppyTNode<Float64T> x);
TNode<Float64T> Float64Trunc(SloppyTNode<Float64T> x);
// Select the minimum of the two provided Number values.
TNode<Number> NumberMax(SloppyTNode<Number> left, SloppyTNode<Number> right);
// Select the minimum of the two provided Number values.
TNode<Number> NumberMin(SloppyTNode<Number> left, SloppyTNode<Number> right);
// After converting an index to an integer, calculate a relative index: if
// index < 0, max(length + index, 0); else min(index, length)
TNode<IntPtrT> ConvertToRelativeIndex(TNode<Context> context,
TNode<Object> index,
TNode<IntPtrT> length);
// Returns true iff the given value fits into smi range and is >= 0.
TNode<BoolT> IsValidPositiveSmi(TNode<IntPtrT> value);
// Tag an IntPtr as a Smi value.
TNode<Smi> SmiTag(SloppyTNode<IntPtrT> value);
// Untag a Smi value as an IntPtr.
TNode<IntPtrT> SmiUntag(SloppyTNode<Smi> value);
// Smi conversions.
TNode<Float64T> SmiToFloat64(SloppyTNode<Smi> value);
TNode<Smi> SmiFromIntPtr(SloppyTNode<IntPtrT> value) { return SmiTag(value); }
TNode<Smi> SmiFromInt32(SloppyTNode<Int32T> value);
TNode<IntPtrT> SmiToIntPtr(SloppyTNode<Smi> value) { return SmiUntag(value); }
TNode<Int32T> SmiToInt32(SloppyTNode<Smi> value);
// Smi operations.
#define SMI_ARITHMETIC_BINOP(SmiOpName, IntPtrOpName, Int32OpName) \
TNode<Smi> SmiOpName(TNode<Smi> a, TNode<Smi> b) { \
if (SmiValuesAre32Bits()) { \
return BitcastWordToTaggedSigned(IntPtrOpName( \
BitcastTaggedSignedToWord(a), BitcastTaggedSignedToWord(b))); \
} else { \
DCHECK(SmiValuesAre31Bits()); \
if (kSystemPointerSize == kInt64Size) { \
CSA_ASSERT(this, IsValidSmi(a)); \
CSA_ASSERT(this, IsValidSmi(b)); \
} \
return BitcastWordToTaggedSigned(ChangeInt32ToIntPtr( \
Int32OpName(TruncateIntPtrToInt32(BitcastTaggedSignedToWord(a)), \
TruncateIntPtrToInt32(BitcastTaggedSignedToWord(b))))); \
} \
}
SMI_ARITHMETIC_BINOP(SmiAdd, IntPtrAdd, Int32Add)
SMI_ARITHMETIC_BINOP(SmiSub, IntPtrSub, Int32Sub)
SMI_ARITHMETIC_BINOP(SmiAnd, WordAnd, Word32And)
SMI_ARITHMETIC_BINOP(SmiOr, WordOr, Word32Or)
#undef SMI_ARITHMETIC_BINOP
TNode<Smi> SmiInc(TNode<Smi> value) { return SmiAdd(value, SmiConstant(1)); }
TNode<IntPtrT> TryIntPtrAdd(TNode<IntPtrT> a, TNode<IntPtrT> b,
Label* if_overflow);
TNode<IntPtrT> TryIntPtrSub(TNode<IntPtrT> a, TNode<IntPtrT> b,
Label* if_overflow);
TNode<Int32T> TryInt32Mul(TNode<Int32T> a, TNode<Int32T> b,
Label* if_overflow);
TNode<Smi> TrySmiAdd(TNode<Smi> a, TNode<Smi> b, Label* if_overflow);
TNode<Smi> TrySmiSub(TNode<Smi> a, TNode<Smi> b, Label* if_overflow);
TNode<Smi> SmiShl(TNode<Smi> a, int shift) {
return BitcastWordToTaggedSigned(
WordShl(BitcastTaggedSignedToWord(a), shift));
}
TNode<Smi> SmiShr(TNode<Smi> a, int shift) {
return BitcastWordToTaggedSigned(
WordAnd(WordShr(BitcastTaggedSignedToWord(a), shift),
BitcastTaggedSignedToWord(SmiConstant(-1))));
}
TNode<Smi> SmiSar(TNode<Smi> a, int shift) {
return BitcastWordToTaggedSigned(
WordAnd(WordSar(BitcastTaggedSignedToWord(a), shift),
BitcastTaggedSignedToWord(SmiConstant(-1))));
}
Node* WordOrSmiShl(Node* a, int shift, ParameterMode mode) {
if (mode == SMI_PARAMETERS) {
return SmiShl(CAST(a), shift);
} else {
DCHECK_EQ(INTPTR_PARAMETERS, mode);
return WordShl(a, shift);
}
}
Node* WordOrSmiShr(Node* a, int shift, ParameterMode mode) {
if (mode == SMI_PARAMETERS) {
return SmiShr(CAST(a), shift);
} else {
DCHECK_EQ(INTPTR_PARAMETERS, mode);
return WordShr(a, shift);
}
}
#define SMI_COMPARISON_OP(SmiOpName, IntPtrOpName, Int32OpName) \
TNode<BoolT> SmiOpName(TNode<Smi> a, TNode<Smi> b) { \
if (SmiValuesAre32Bits()) { \
return IntPtrOpName(BitcastTaggedSignedToWord(a), \
BitcastTaggedSignedToWord(b)); \
} else { \
DCHECK(SmiValuesAre31Bits()); \
if (kSystemPointerSize == kInt64Size) { \
CSA_ASSERT(this, IsValidSmi(a)); \
CSA_ASSERT(this, IsValidSmi(b)); \
} \
return Int32OpName(TruncateIntPtrToInt32(BitcastTaggedSignedToWord(a)), \
TruncateIntPtrToInt32(BitcastTaggedSignedToWord(b))); \
} \
}
SMI_COMPARISON_OP(SmiEqual, WordEqual, Word32Equal)
SMI_COMPARISON_OP(SmiNotEqual, WordNotEqual, Word32NotEqual)
SMI_COMPARISON_OP(SmiAbove, UintPtrGreaterThan, Uint32GreaterThan)
SMI_COMPARISON_OP(SmiAboveOrEqual, UintPtrGreaterThanOrEqual,
Uint32GreaterThanOrEqual)
SMI_COMPARISON_OP(SmiBelow, UintPtrLessThan, Uint32LessThan)
SMI_COMPARISON_OP(SmiLessThan, IntPtrLessThan, Int32LessThan)
SMI_COMPARISON_OP(SmiLessThanOrEqual, IntPtrLessThanOrEqual,
Int32LessThanOrEqual)
SMI_COMPARISON_OP(SmiGreaterThan, IntPtrGreaterThan, Int32GreaterThan)
SMI_COMPARISON_OP(SmiGreaterThanOrEqual, IntPtrGreaterThanOrEqual,
Int32GreaterThanOrEqual)
#undef SMI_COMPARISON_OP
TNode<Smi> SmiMax(TNode<Smi> a, TNode<Smi> b);
TNode<Smi> SmiMin(TNode<Smi> a, TNode<Smi> b);
// Computes a % b for Smi inputs a and b; result is not necessarily a Smi.
TNode<Number> SmiMod(TNode<Smi> a, TNode<Smi> b);
// Computes a * b for Smi inputs a and b; result is not necessarily a Smi.
TNode<Number> SmiMul(TNode<Smi> a, TNode<Smi> b);
// Tries to compute dividend / divisor for Smi inputs; branching to bailout
// if the division needs to be performed as a floating point operation.
TNode<Smi> TrySmiDiv(TNode<Smi> dividend, TNode<Smi> divisor, Label* bailout);
// Compares two Smis a and b as if they were converted to strings and then
// compared lexicographically. Returns:
// -1 iff x < y.
// 0 iff x == y.
// 1 iff x > y.
TNode<Smi> SmiLexicographicCompare(TNode<Smi> x, TNode<Smi> y);
// Smi | HeapNumber operations.
TNode<Number> NumberInc(SloppyTNode<Number> value);
TNode<Number> NumberDec(SloppyTNode<Number> value);
TNode<Number> NumberAdd(SloppyTNode<Number> a, SloppyTNode<Number> b);
TNode<Number> NumberSub(SloppyTNode<Number> a, SloppyTNode<Number> b);
void GotoIfNotNumber(Node* value, Label* is_not_number);
void GotoIfNumber(Node* value, Label* is_number);
TNode<Number> SmiToNumber(TNode<Smi> v) { return v; }
TNode<Number> BitwiseOp(Node* left32, Node* right32, Operation bitwise_op);
// Allocate an object of the given size.
TNode<HeapObject> AllocateInNewSpace(TNode<IntPtrT> size,
AllocationFlags flags = kNone);
TNode<HeapObject> AllocateInNewSpace(int size, AllocationFlags flags = kNone);
TNode<HeapObject> Allocate(TNode<IntPtrT> size,
AllocationFlags flags = kNone);
TNode<HeapObject> Allocate(int size, AllocationFlags flags = kNone);
TNode<HeapObject> InnerAllocate(TNode<HeapObject> previous, int offset);
TNode<HeapObject> InnerAllocate(TNode<HeapObject> previous,
TNode<IntPtrT> offset);
TNode<BoolT> IsRegularHeapObjectSize(TNode<IntPtrT> size);
using BranchGenerator = std::function<void(Label*, Label*)>;
using NodeGenerator = std::function<Node*()>;
using ExtraNode = std::pair<Node*, const char*>;
void Assert(const BranchGenerator& branch, const char* message,
const char* file, int line,
std::initializer_list<ExtraNode> extra_nodes = {});
void Assert(const NodeGenerator& condition_body, const char* message,
const char* file, int line,
std::initializer_list<ExtraNode> extra_nodes = {});
void Check(const BranchGenerator& branch, const char* message,
const char* file, int line,
std::initializer_list<ExtraNode> extra_nodes = {});
void Check(const NodeGenerator& condition_body, const char* message,
const char* file, int line,
std::initializer_list<ExtraNode> extra_nodes = {});
void FailAssert(const char* message, const char* file, int line,
std::initializer_list<ExtraNode> extra_nodes = {});
void FastCheck(TNode<BoolT> condition);
// The following Call wrappers call an object according to the semantics that
// one finds in the EcmaScript spec, operating on an Callable (e.g. a
// JSFunction or proxy) rather than a Code object.
template <class... TArgs>
TNode<Object> Call(TNode<Context> context, TNode<Object> callable,
TNode<JSReceiver> receiver, TArgs... args) {
return UncheckedCast<Object>(CallJS(
CodeFactory::Call(isolate(), ConvertReceiverMode::kNotNullOrUndefined),
context, callable, receiver, args...));
}
template <class... TArgs>
TNode<Object> Call(TNode<Context> context, TNode<Object> callable,
TNode<Object> receiver, TArgs... args) {
if (IsUndefinedConstant(receiver) || IsNullConstant(receiver)) {
return UncheckedCast<Object>(CallJS(
CodeFactory::Call(isolate(), ConvertReceiverMode::kNullOrUndefined),
context, callable, receiver, args...));
}
return UncheckedCast<Object>(CallJS(CodeFactory::Call(isolate()), context,
callable, receiver, args...));
}
template <class... TArgs>
TNode<JSReceiver> ConstructWithTarget(TNode<Context> context,
TNode<JSReceiver> target,
TNode<JSReceiver> new_target,
TArgs... args) {
return CAST(ConstructJSWithTarget(CodeFactory::Construct(isolate()),
context, target, new_target,
implicit_cast<TNode<Object>>(args)...));
}
template <class... TArgs>
TNode<JSReceiver> Construct(TNode<Context> context,
TNode<JSReceiver> new_target, TArgs... args) {
return ConstructWithTarget(context, new_target, new_target, args...);
}
template <class A, class F, class G>
TNode<A> Select(SloppyTNode<BoolT> condition, const F& true_body,
const G& false_body) {
return UncheckedCast<A>(SelectImpl(
condition,
[&]() -> Node* { return implicit_cast<TNode<A>>(true_body()); },
[&]() -> Node* { return implicit_cast<TNode<A>>(false_body()); },
MachineRepresentationOf<A>::value));
}
template <class A>
TNode<A> SelectConstant(TNode<BoolT> condition, TNode<A> true_value,
TNode<A> false_value) {
return Select<A>(
condition, [=] { return true_value; }, [=] { return false_value; });
}
TNode<Int32T> SelectInt32Constant(SloppyTNode<BoolT> condition,
int true_value, int false_value);
TNode<IntPtrT> SelectIntPtrConstant(SloppyTNode<BoolT> condition,
int true_value, int false_value);
TNode<Oddball> SelectBooleanConstant(SloppyTNode<BoolT> condition);
TNode<Smi> SelectSmiConstant(SloppyTNode<BoolT> condition, Smi true_value,
Smi false_value);
TNode<Smi> SelectSmiConstant(SloppyTNode<BoolT> condition, int true_value,
Smi false_value) {
return SelectSmiConstant(condition, Smi::FromInt(true_value), false_value);
}
TNode<Smi> SelectSmiConstant(SloppyTNode<BoolT> condition, Smi true_value,
int false_value) {
return SelectSmiConstant(condition, true_value, Smi::FromInt(false_value));
}
TNode<Smi> SelectSmiConstant(SloppyTNode<BoolT> condition, int true_value,
int false_value) {
return SelectSmiConstant(condition, Smi::FromInt(true_value),
Smi::FromInt(false_value));
}
TNode<String> SingleCharacterStringConstant(char const* single_char) {
DCHECK_EQ(strlen(single_char), 1);
return HeapConstant(
isolate()->factory()->LookupSingleCharacterStringFromCode(
single_char[0]));
}
TNode<Int32T> TruncateIntPtrToInt32(SloppyTNode<IntPtrT> value);
// Check a value for smi-ness
TNode<BoolT> TaggedIsSmi(SloppyTNode<Object> a);
TNode<BoolT> TaggedIsSmi(TNode<MaybeObject> a);
TNode<BoolT> TaggedIsNotSmi(SloppyTNode<Object> a);
// Check that the value is a non-negative smi.
TNode<BoolT> TaggedIsPositiveSmi(SloppyTNode<Object> a);
// Check that a word has a word-aligned address.
TNode<BoolT> WordIsAligned(SloppyTNode<WordT> word, size_t alignment);
TNode<BoolT> WordIsPowerOfTwo(SloppyTNode<IntPtrT> value);
#if DEBUG
void Bind(Label* label, AssemblerDebugInfo debug_info);
#endif // DEBUG
void Bind(Label* label);
template <class... T>
void Bind(compiler::CodeAssemblerParameterizedLabel<T...>* label,
TNode<T>*... phis) {
CodeAssembler::Bind(label, phis...);
}
void BranchIfSmiEqual(TNode<Smi> a, TNode<Smi> b, Label* if_true,
Label* if_false) {
Branch(SmiEqual(a, b), if_true, if_false);
}
void BranchIfSmiLessThan(TNode<Smi> a, TNode<Smi> b, Label* if_true,
Label* if_false) {
Branch(SmiLessThan(a, b), if_true, if_false);
}
void BranchIfSmiLessThanOrEqual(TNode<Smi> a, TNode<Smi> b, Label* if_true,
Label* if_false) {
Branch(SmiLessThanOrEqual(a, b), if_true, if_false);
}
void BranchIfFloat64IsNaN(Node* value, Label* if_true, Label* if_false) {
Branch(Float64Equal(value, value), if_false, if_true);
}
// Branches to {if_true} if ToBoolean applied to {value} yields true,
// otherwise goes to {if_false}.
void BranchIfToBooleanIsTrue(Node* value, Label* if_true, Label* if_false);
// Branches to {if_false} if ToBoolean applied to {value} yields false,
// otherwise goes to {if_true}.
void BranchIfToBooleanIsFalse(Node* value, Label* if_false, Label* if_true) {
BranchIfToBooleanIsTrue(value, if_true, if_false);
}
void BranchIfJSReceiver(Node* object, Label* if_true, Label* if_false);
// Branches to {if_true} when --force-slow-path flag has been passed.
// It's used for testing to ensure that slow path implementation behave
// equivalent to corresponding fast paths (where applicable).
//
// Works only with V8_ENABLE_FORCE_SLOW_PATH compile time flag. Nop otherwise.
void GotoIfForceSlowPath(Label* if_true);
// Branches to {if_true} when Debug::ExecutionMode is DebugInfo::kSideEffect.
void GotoIfDebugExecutionModeChecksSideEffects(Label* if_true);
// Load value from current parent frame by given offset in bytes.
Node* LoadFromParentFrame(int offset,
MachineType type = MachineType::AnyTagged());
// Load an object pointer from a buffer that isn't in the heap.
Node* LoadBufferObject(Node* buffer, int offset, MachineType type);
TNode<Object> LoadBufferObject(TNode<RawPtrT> buffer, int offset) {
return CAST(LoadBufferObject(buffer, offset, MachineType::AnyTagged()));
}
TNode<RawPtrT> LoadBufferPointer(TNode<RawPtrT> buffer, int offset) {
return UncheckedCast<RawPtrT>(
LoadBufferObject(buffer, offset, MachineType::Pointer()));
}
TNode<Smi> LoadBufferSmi(TNode<RawPtrT> buffer, int offset) {
return CAST(LoadBufferObject(buffer, offset, MachineType::TaggedSigned()));
}
// Load a field from an object on the heap.
Node* LoadObjectField(SloppyTNode<HeapObject> object, int offset,
MachineType type);
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<Object>>::value,
int>::type = 0>
TNode<T> LoadObjectField(TNode<HeapObject> object, int offset) {
return CAST(LoadObjectField(object, offset, MachineTypeOf<T>::value));
}
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<UntaggedT>>::value,
int>::type = 0>
TNode<T> LoadObjectField(TNode<HeapObject> object, int offset) {
return UncheckedCast<T>(
LoadObjectField(object, offset, MachineTypeOf<T>::value));
}
TNode<Object> LoadObjectField(SloppyTNode<HeapObject> object, int offset) {
return UncheckedCast<Object>(
LoadObjectField(object, offset, MachineType::AnyTagged()));
}
Node* LoadObjectField(SloppyTNode<HeapObject> object,
SloppyTNode<IntPtrT> offset, MachineType type);
TNode<Object> LoadObjectField(SloppyTNode<HeapObject> object,
SloppyTNode<IntPtrT> offset) {
return UncheckedCast<Object>(
LoadObjectField(object, offset, MachineType::AnyTagged()));
}
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<UntaggedT>>::value,
int>::type = 0>
TNode<T> LoadObjectField(TNode<HeapObject> object, TNode<IntPtrT> offset) {
return UncheckedCast<T>(
LoadObjectField(object, offset, MachineTypeOf<T>::value));
}
// Load a SMI field and untag it.
TNode<IntPtrT> LoadAndUntagObjectField(SloppyTNode<HeapObject> object,
int offset);
// Load a SMI field, untag it, and convert to Word32.
TNode<Int32T> LoadAndUntagToWord32ObjectField(Node* object, int offset);
// Load a SMI and untag it.
TNode<IntPtrT> LoadAndUntagSmi(Node* base, int index);
TNode<MaybeObject> LoadMaybeWeakObjectField(SloppyTNode<HeapObject> object,
int offset) {
return UncheckedCast<MaybeObject>(
LoadObjectField(object, offset, MachineType::AnyTagged()));
}
TNode<Object> LoadConstructorOrBackPointer(TNode<Map> map) {
return LoadObjectField(map, Map::kConstructorOrBackPointerOffset);
}
// Reference is the CSA-equivalent of a Torque reference value,
// representing an inner pointer into a HeapObject.
struct Reference {
TNode<HeapObject> object;
TNode<IntPtrT> offset;
std::tuple<TNode<HeapObject>, TNode<IntPtrT>> Flatten() const {
return std::make_tuple(object, offset);
}
};
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<Object>>::value,
int>::type = 0>
TNode<T> LoadReference(Reference reference) {
TNode<IntPtrT> offset =
IntPtrSub(reference.offset, IntPtrConstant(kHeapObjectTag));
return CAST(
LoadFromObject(MachineTypeOf<T>::value, reference.object, offset));
}
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<UntaggedT>>::value,
int>::type = 0>
TNode<T> LoadReference(Reference reference) {
TNode<IntPtrT> offset =
IntPtrSub(reference.offset, IntPtrConstant(kHeapObjectTag));
return UncheckedCast<T>(
LoadFromObject(MachineTypeOf<T>::value, reference.object, offset));
}
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<Object>>::value,
int>::type = 0>
void StoreReference(Reference reference, TNode<T> value) {
MachineRepresentation rep = MachineRepresentationOf<T>::value;
StoreToObjectWriteBarrier write_barrier = StoreToObjectWriteBarrier::kFull;
if (std::is_same<T, Smi>::value) {
write_barrier = StoreToObjectWriteBarrier::kNone;
} else if (std::is_same<T, Map>::value) {
write_barrier = StoreToObjectWriteBarrier::kMap;
}
TNode<IntPtrT> offset =
IntPtrSub(reference.offset, IntPtrConstant(kHeapObjectTag));
StoreToObject(rep, reference.object, offset, value, write_barrier);
}
template <class T, typename std::enable_if<
std::is_convertible<TNode<T>, TNode<UntaggedT>>::value,
int>::type = 0>
void StoreReference(Reference reference, TNode<T> value) {
TNode<IntPtrT> offset =
IntPtrSub(reference.offset, IntPtrConstant(kHeapObjectTag));
StoreToObject(MachineRepresentationOf<T>::value, reference.object, offset,
value, StoreToObjectWriteBarrier::kNone);
}
// Tag a smi and store it.
void StoreAndTagSmi(Node* base, int offset, Node* value);
// Load the floating point value of a HeapNumber.
TNode<Float64T> LoadHeapNumberValue(SloppyTNode<HeapNumber> object);
// Load the Map of an HeapObject.
TNode<Map> LoadMap(SloppyTNode<HeapObject> object);
// Load the instance type of an HeapObject.
TNode<Uint16T> LoadInstanceType(SloppyTNode<HeapObject> object);
// Compare the instance the type of the object against the provided one.
TNode<BoolT> HasInstanceType(SloppyTNode<HeapObject> object,
InstanceType type);
TNode<BoolT> DoesntHaveInstanceType(SloppyTNode<HeapObject> object,
InstanceType type);
TNode<BoolT> TaggedDoesntHaveInstanceType(SloppyTNode<HeapObject> any_tagged,
InstanceType type);
// Load the properties backing store of a JSObject.
TNode<HeapObject> LoadSlowProperties(SloppyTNode<JSObject> object);
TNode<HeapObject> LoadFastProperties(SloppyTNode<JSObject> object);
// Load the elements backing store of a JSObject.
TNode<FixedArrayBase> LoadElements(SloppyTNode<JSObject> object) {
return LoadJSObjectElements(object);
}
// Load the length of a JSArray instance.
TNode<Object> LoadJSArgumentsObjectWithLength(
SloppyTNode<JSArgumentsObjectWithLength> array);
// Load the length of a JSArray instance.
TNode<Number> LoadJSArrayLength(SloppyTNode<JSArray> array);
// Load the length of a fast JSArray instance. Returns a positive Smi.
TNode<Smi> LoadFastJSArrayLength(SloppyTNode<JSArray> array);
// Load the length of a fixed array base instance.
TNode<Smi> LoadFixedArrayBaseLength(SloppyTNode<FixedArrayBase> array);
// Load the length of a fixed array base instance.
TNode<IntPtrT> LoadAndUntagFixedArrayBaseLength(
SloppyTNode<FixedArrayBase> array);
// Load the length of a WeakFixedArray.
TNode<Smi> LoadWeakFixedArrayLength(TNode<WeakFixedArray> array);
TNode<IntPtrT> LoadAndUntagWeakFixedArrayLength(
SloppyTNode<WeakFixedArray> array);
// Load the number of descriptors in DescriptorArray.
TNode<Int32T> LoadNumberOfDescriptors(TNode<DescriptorArray> array);
// Load the bit field of a Map.
TNode<Int32T> LoadMapBitField(SloppyTNode<Map> map);
// Load bit field 2 of a map.
TNode<Int32T> LoadMapBitField2(SloppyTNode<Map> map);
// Load bit field 3 of a map.
TNode<Uint32T> LoadMapBitField3(SloppyTNode<Map> map);
// Load the instance type of a map.
TNode<Uint16T> LoadMapInstanceType(SloppyTNode<Map> map);
// Load the ElementsKind of a map.
TNode<Int32T> LoadMapElementsKind(SloppyTNode<Map> map);
TNode<Int32T> LoadElementsKind(SloppyTNode<HeapObject> object);
// Load the instance descriptors of a map.
TNode<DescriptorArray> LoadMapDescriptors(SloppyTNode<Map> map);
// Load the prototype of a map.
TNode<HeapObject> LoadMapPrototype(SloppyTNode<Map> map);
// Load the prototype info of a map. The result has to be checked if it is a
// prototype info object or not.
TNode<PrototypeInfo> LoadMapPrototypeInfo(SloppyTNode<Map> map,
Label* if_has_no_proto_info);
// Load the instance size of a Map.
TNode<IntPtrT> LoadMapInstanceSizeInWords(SloppyTNode<Map> map);
// Load the inobject properties start of a Map (valid only for JSObjects).
TNode<IntPtrT> LoadMapInobjectPropertiesStartInWords(SloppyTNode<Map> map);
// Load the constructor function index of a Map (only for primitive maps).
TNode<IntPtrT> LoadMapConstructorFunctionIndex(SloppyTNode<Map> map);
// Load the constructor of a Map (equivalent to Map::GetConstructor()).
TNode<Object> LoadMapConstructor(SloppyTNode<Map> map);
// Load the EnumLength of a Map.
Node* LoadMapEnumLength(SloppyTNode<Map> map);
// Load the back-pointer of a Map.
TNode<Object> LoadMapBackPointer(SloppyTNode<Map> map);
// Checks that |map| has only simple properties, returns bitfield3.
TNode<Uint32T> EnsureOnlyHasSimpleProperties(TNode<Map> map,
TNode<Int32T> instance_type,
Label* bailout);
// Load the identity hash of a JSRececiver.
TNode<IntPtrT> LoadJSReceiverIdentityHash(SloppyTNode<Object> receiver,
Label* if_no_hash = nullptr);
// This is only used on a newly allocated PropertyArray which
// doesn't have an existing hash.
void InitializePropertyArrayLength(Node* property_array, Node* length,
ParameterMode mode);
// Check if the map is set for slow properties.
TNode<BoolT> IsDictionaryMap(SloppyTNode<Map> map);
// Load the hash field of a name as an uint32 value.
TNode<Uint32T> LoadNameHashField(SloppyTNode<Name> name);
// Load the hash value of a name as an uint32 value.
// If {if_hash_not_computed} label is specified then it also checks if
// hash is actually computed.
TNode<Uint32T> LoadNameHash(SloppyTNode<Name> name,
Label* if_hash_not_computed = nullptr);
// Load length field of a String object as Smi value.
TNode<Smi> LoadStringLengthAsSmi(SloppyTNode<String> string);
// Load length field of a String object as intptr_t value.
TNode<IntPtrT> LoadStringLengthAsWord(SloppyTNode<String> string);
// Load length field of a String object as uint32_t value.
TNode<Uint32T> LoadStringLengthAsWord32(SloppyTNode<String> string);
// Loads a pointer to the sequential String char array.
Node* PointerToSeqStringData(Node* seq_string);
// Load value field of a JSPrimitiveWrapper object.
Node* LoadJSPrimitiveWrapperValue(Node* object);
// Figures out whether the value of maybe_object is:
// - a SMI (jump to "if_smi", "extracted" will be the SMI value)
// - a cleared weak reference (jump to "if_cleared", "extracted" will be
// untouched)
// - a weak reference (jump to "if_weak", "extracted" will be the object
// pointed to)
// - a strong reference (jump to "if_strong", "extracted" will be the object
// pointed to)
void DispatchMaybeObject(TNode<MaybeObject> maybe_object, Label* if_smi,
Label* if_cleared, Label* if_weak, Label* if_strong,
TVariable<Object>* extracted);
// See MaybeObject for semantics of these functions.
TNode<BoolT> IsStrong(TNode<MaybeObject> value);
// This variant is for overzealous checking.
TNode<BoolT> IsStrong(TNode<Object> value) {
return IsStrong(ReinterpretCast<MaybeObject>(value));
}
TNode<HeapObject> GetHeapObjectIfStrong(TNode<MaybeObject> value,
Label* if_not_strong);
TNode<BoolT> IsWeakOrCleared(TNode<MaybeObject> value);
TNode<BoolT> IsCleared(TNode<MaybeObject> value);
TNode<BoolT> IsNotCleared(TNode<MaybeObject> value);
// Removes the weak bit + asserts it was set.
TNode<HeapObject> GetHeapObjectAssumeWeak(TNode<MaybeObject> value);
TNode<HeapObject> GetHeapObjectAssumeWeak(TNode<MaybeObject> value,
Label* if_cleared);
TNode<BoolT> IsWeakReferenceTo(TNode<MaybeObject> object,
TNode<Object> value);
TNode<BoolT> IsNotWeakReferenceTo(TNode<MaybeObject> object,
TNode<Object> value);
TNode<BoolT> IsStrongReferenceTo(TNode<MaybeObject> object,
TNode<Object> value);
TNode<MaybeObject> MakeWeak(TNode<HeapObject> value);
void FixedArrayBoundsCheck(TNode<FixedArrayBase> array, Node* index,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
// Array is any array-like type that has a fixed header followed by
// tagged elements.
template <typename Array>
TNode<IntPtrT> LoadArrayLength(TNode<Array> array);
// Array is any array-like type that has a fixed header followed by
// tagged elements.
template <typename Array, typename T = MaybeObject>
TNode<T> LoadArrayElement(
TNode<Array> array, int array_header_size, Node* index,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe);
TNode<Object> LoadFixedArrayElement(
TNode<FixedArray> object, Node* index, int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe,
CheckBounds check_bounds = CheckBounds::kAlways);
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
TNode<Object> UnsafeLoadFixedArrayElement(
TNode<FixedArray> object, Node* index, int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe) {
return LoadFixedArrayElement(object, index, additional_offset,
parameter_mode, needs_poisoning,
CheckBounds::kDebugOnly);
}
TNode<Object> LoadFixedArrayElement(
TNode<FixedArray> object, TNode<IntPtrT> index,
LoadSensitivity needs_poisoning,
CheckBounds check_bounds = CheckBounds::kAlways) {
return LoadFixedArrayElement(object, index, 0, INTPTR_PARAMETERS,
needs_poisoning, check_bounds);
}
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
TNode<Object> UnsafeLoadFixedArrayElement(TNode<FixedArray> object,
TNode<IntPtrT> index,
LoadSensitivity needs_poisoning) {
return LoadFixedArrayElement(object, index, needs_poisoning,
CheckBounds::kDebugOnly);
}
TNode<Object> LoadFixedArrayElement(
TNode<FixedArray> object, TNode<IntPtrT> index, int additional_offset = 0,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe) {
return LoadFixedArrayElement(object, index, additional_offset,
INTPTR_PARAMETERS, needs_poisoning);
}
TNode<Object> LoadFixedArrayElement(
TNode<FixedArray> object, int index, int additional_offset = 0,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe) {
return LoadFixedArrayElement(object, IntPtrConstant(index),
additional_offset, INTPTR_PARAMETERS,
needs_poisoning);
}
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
TNode<Object> UnsafeLoadFixedArrayElement(
TNode<FixedArray> object, int index, int additional_offset = 0,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe) {
return LoadFixedArrayElement(object, IntPtrConstant(index),
additional_offset, INTPTR_PARAMETERS,
needs_poisoning, CheckBounds::kDebugOnly);
}
TNode<Object> LoadFixedArrayElement(TNode<FixedArray> object,
TNode<Smi> index) {
return LoadFixedArrayElement(object, index, 0, SMI_PARAMETERS);
}
TNode<Object> LoadPropertyArrayElement(TNode<PropertyArray> object,
SloppyTNode<IntPtrT> index);
TNode<IntPtrT> LoadPropertyArrayLength(TNode<PropertyArray> object);
// Load an element from an array and untag it and return it as Word32.
// Array is any array-like type that has a fixed header followed by
// tagged elements.
template <typename Array>
TNode<Int32T> LoadAndUntagToWord32ArrayElement(
TNode<Array> array, int array_header_size, Node* index,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
// Load an array element from a FixedArray, untag it and return it as Word32.
TNode<Int32T> LoadAndUntagToWord32FixedArrayElement(
TNode<FixedArray> object, Node* index, int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
TNode<Int32T> LoadAndUntagToWord32FixedArrayElement(
TNode<FixedArray> object, int index, int additional_offset = 0) {
return LoadAndUntagToWord32FixedArrayElement(
object, IntPtrConstant(index), additional_offset, INTPTR_PARAMETERS);
}
// Load an array element from a WeakFixedArray.
TNode<MaybeObject> LoadWeakFixedArrayElement(
TNode<WeakFixedArray> object, Node* index, int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe);
TNode<MaybeObject> LoadWeakFixedArrayElement(
TNode<WeakFixedArray> object, int index, int additional_offset = 0,
LoadSensitivity needs_poisoning = LoadSensitivity::kSafe) {
return LoadWeakFixedArrayElement(object, IntPtrConstant(index),
additional_offset, INTPTR_PARAMETERS,
needs_poisoning);
}
// Load an array element from a FixedDoubleArray.
TNode<Float64T> LoadFixedDoubleArrayElement(
SloppyTNode<FixedDoubleArray> object, Node* index,
MachineType machine_type, int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
Label* if_hole = nullptr);
Node* LoadFixedDoubleArrayElement(TNode<FixedDoubleArray> object,
TNode<Smi> index,
Label* if_hole = nullptr) {
return LoadFixedDoubleArrayElement(object, index, MachineType::Float64(), 0,
SMI_PARAMETERS, if_hole);
}
Node* LoadFixedDoubleArrayElement(TNode<FixedDoubleArray> object,
TNode<IntPtrT> index,
Label* if_hole = nullptr) {
return LoadFixedDoubleArrayElement(object, index, MachineType::Float64(), 0,
INTPTR_PARAMETERS, if_hole);
}
// Load an array element from a FixedArray, FixedDoubleArray or a
// NumberDictionary (depending on the |elements_kind|) and return
// it as a tagged value. Assumes that the |index| passed a length
// check before. Bails out to |if_accessor| if the element that
// was found is an accessor, or to |if_hole| if the element at
// the given |index| is not found in |elements|.
TNode<Object> LoadFixedArrayBaseElementAsTagged(
TNode<FixedArrayBase> elements, TNode<IntPtrT> index,
TNode<Int32T> elements_kind, Label* if_accessor, Label* if_hole);
// Load a feedback slot from a FeedbackVector.
TNode<MaybeObject> LoadFeedbackVectorSlot(
Node* object, Node* index, int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
TNode<IntPtrT> LoadFeedbackVectorLength(TNode<FeedbackVector>);
TNode<Float64T> LoadDoubleWithHoleCheck(TNode<FixedDoubleArray> array,
TNode<Smi> index,
Label* if_hole = nullptr);
TNode<Float64T> LoadDoubleWithHoleCheck(TNode<FixedDoubleArray> array,
TNode<IntPtrT> index,
Label* if_hole = nullptr);
// Load Float64 value by |base| + |offset| address. If the value is a double
// hole then jump to |if_hole|. If |machine_type| is None then only the hole
// check is generated.
TNode<Float64T> LoadDoubleWithHoleCheck(
SloppyTNode<Object> base, SloppyTNode<IntPtrT> offset, Label* if_hole,
MachineType machine_type = MachineType::Float64());
TNode<Numeric> LoadFixedTypedArrayElementAsTagged(
TNode<RawPtrT> data_pointer, Node* index_node, ElementsKind elements_kind,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
TNode<Numeric> LoadFixedTypedArrayElementAsTagged(
TNode<RawPtrT> data_pointer, TNode<Smi> index_node,
ElementsKind elements_kind) {
return LoadFixedTypedArrayElementAsTagged(data_pointer, index_node,
elements_kind, SMI_PARAMETERS);
}
TNode<Numeric> LoadFixedTypedArrayElementAsTagged(
TNode<RawPtrT> data_pointer, TNode<Smi> index,
TNode<Int32T> elements_kind);
// Parts of the above, factored out for readability:
TNode<BigInt> LoadFixedBigInt64ArrayElementAsTagged(
SloppyTNode<RawPtrT> data_pointer, SloppyTNode<IntPtrT> offset);
TNode<BigInt> LoadFixedBigUint64ArrayElementAsTagged(
SloppyTNode<RawPtrT> data_pointer, SloppyTNode<IntPtrT> offset);
// 64-bit platforms only:
TNode<BigInt> BigIntFromInt64(TNode<IntPtrT> value);
TNode<BigInt> BigIntFromUint64(TNode<UintPtrT> value);
// 32-bit platforms only:
TNode<BigInt> BigIntFromInt32Pair(TNode<IntPtrT> low, TNode<IntPtrT> high);
TNode<BigInt> BigIntFromUint32Pair(TNode<UintPtrT> low, TNode<UintPtrT> high);
void StoreJSTypedArrayElementFromTagged(TNode<Context> context,
TNode<JSTypedArray> typed_array,
TNode<Smi> index_node,
TNode<Object> value,
ElementsKind elements_kind);
// Context manipulation
TNode<Object> LoadContextElement(SloppyTNode<Context> context,
int slot_index);
TNode<Object> LoadContextElement(SloppyTNode<Context> context,
SloppyTNode<IntPtrT> slot_index);
TNode<Object> LoadContextElement(TNode<Context> context,
TNode<Smi> slot_index);
void StoreContextElement(SloppyTNode<Context> context, int slot_index,
SloppyTNode<Object> value);
void StoreContextElement(SloppyTNode<Context> context,
SloppyTNode<IntPtrT> slot_index,
SloppyTNode<Object> value);
void StoreContextElementNoWriteBarrier(SloppyTNode<Context> context,
int slot_index,
SloppyTNode<Object> value);
TNode<Context> LoadNativeContext(SloppyTNode<Context> context);
// Calling this is only valid if there's a module context in the chain.
TNode<Context> LoadModuleContext(SloppyTNode<Context> context);
void GotoIfContextElementEqual(Node* value, Node* native_context,
int slot_index, Label* if_equal) {
GotoIf(WordEqual(value, LoadContextElement(native_context, slot_index)),
if_equal);
}
TNode<Map> LoadJSArrayElementsMap(ElementsKind kind,
SloppyTNode<Context> native_context);
TNode<Map> LoadJSArrayElementsMap(SloppyTNode<Int32T> kind,
SloppyTNode<Context> native_context);
TNode<BoolT> IsGeneratorFunction(TNode<JSFunction> function);
TNode<BoolT> HasPrototypeProperty(TNode<JSFunction> function, TNode<Map> map);
void GotoIfPrototypeRequiresRuntimeLookup(TNode<JSFunction> function,
TNode<Map> map, Label* runtime);
// Load the "prototype" property of a JSFunction.
Node* LoadJSFunctionPrototype(Node* function, Label* if_bailout);
TNode<BytecodeArray> LoadSharedFunctionInfoBytecodeArray(
SloppyTNode<SharedFunctionInfo> shared);
void StoreObjectByteNoWriteBarrier(TNode<HeapObject> object, int offset,
TNode<Word32T> value);
// Store the floating point value of a HeapNumber.
void StoreHeapNumberValue(SloppyTNode<HeapNumber> object,
SloppyTNode<Float64T> value);
void StoreMutableHeapNumberValue(SloppyTNode<MutableHeapNumber> object,
SloppyTNode<Float64T> value);
// Store a field to an object on the heap.
void StoreObjectField(Node* object, int offset, Node* value);
void StoreObjectField(Node* object, Node* offset, Node* value);
void StoreObjectFieldNoWriteBarrier(
Node* object, int offset, Node* value,
MachineRepresentation rep = MachineRepresentation::kTagged);
void UnsafeStoreObjectFieldNoWriteBarrier(TNode<HeapObject> object,
int offset, TNode<Object> value);
void StoreObjectFieldNoWriteBarrier(
Node* object, SloppyTNode<IntPtrT> offset, Node* value,
MachineRepresentation rep = MachineRepresentation::kTagged);
template <class T = Object>
void StoreObjectFieldNoWriteBarrier(Node* object, SloppyTNode<IntPtrT> offset,
TNode<T> value) {
StoreObjectFieldNoWriteBarrier(object, offset, value,
MachineRepresentationOf<T>::value);
}
template <class T = Object>
void StoreObjectFieldNoWriteBarrier(Node* object, int offset,
TNode<T> value) {
StoreObjectFieldNoWriteBarrier(object, offset, value,
MachineRepresentationOf<T>::value);
}
// Store the Map of an HeapObject.
void StoreMap(Node* object, Node* map);
void StoreMapNoWriteBarrier(Node* object, RootIndex map_root_index);
void StoreMapNoWriteBarrier(Node* object, Node* map);
void StoreObjectFieldRoot(Node* object, int offset, RootIndex root);
// Store an array element to a FixedArray.
void StoreFixedArrayElement(
TNode<FixedArray> object, int index, SloppyTNode<Object> value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
CheckBounds check_bounds = CheckBounds::kAlways) {
return StoreFixedArrayElement(object, IntPtrConstant(index), value,
barrier_mode, 0, INTPTR_PARAMETERS,
check_bounds);
}
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
void UnsafeStoreFixedArrayElement(
TNode<FixedArray> object, int index, SloppyTNode<Object> value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER) {
return StoreFixedArrayElement(object, index, value, barrier_mode,
CheckBounds::kDebugOnly);
}
void UnsafeStoreFixedArrayElement(
TNode<FixedArray> object, int index, TNode<Smi> value,
WriteBarrierMode barrier_mode = SKIP_WRITE_BARRIER) {
DCHECK_EQ(SKIP_WRITE_BARRIER, barrier_mode);
return StoreFixedArrayElement(object, index, value,
UNSAFE_SKIP_WRITE_BARRIER,
CheckBounds::kDebugOnly);
}
void StoreFixedArrayElement(TNode<FixedArray> object, int index,
TNode<Smi> value,
CheckBounds check_bounds = CheckBounds::kAlways) {
return StoreFixedArrayElement(object, IntPtrConstant(index), value,
UNSAFE_SKIP_WRITE_BARRIER, 0,
INTPTR_PARAMETERS, check_bounds);
}
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
void UnsafeStoreFixedArrayElement(TNode<FixedArray> object, int index,
TNode<Smi> value) {
return StoreFixedArrayElement(object, index, value,
CheckBounds::kDebugOnly);
}
void StoreJSArrayLength(TNode<JSArray> array, TNode<Smi> length);
void StoreElements(TNode<Object> object, TNode<FixedArrayBase> elements);
void StoreFixedArrayOrPropertyArrayElement(
Node* array, Node* index, Node* value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
void StoreFixedArrayElement(
TNode<FixedArray> array, Node* index, SloppyTNode<Object> value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
CheckBounds check_bounds = CheckBounds::kAlways) {
if (NeedsBoundsCheck(check_bounds)) {
FixedArrayBoundsCheck(array, index, additional_offset, parameter_mode);
}
StoreFixedArrayOrPropertyArrayElement(array, index, value, barrier_mode,
additional_offset, parameter_mode);
}
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
void UnsafeStoreFixedArrayElement(
TNode<FixedArray> array, Node* index, SloppyTNode<Object> value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS) {
return StoreFixedArrayElement(array, index, value, barrier_mode,
additional_offset, parameter_mode,
CheckBounds::kDebugOnly);
}
void UnsafeStoreFixedArrayElement(
TNode<FixedArray> array, Node* index, TNode<Smi> value,
WriteBarrierMode barrier_mode = SKIP_WRITE_BARRIER,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS) {
DCHECK_EQ(SKIP_WRITE_BARRIER, barrier_mode);
return StoreFixedArrayElement(array, index, value,
UNSAFE_SKIP_WRITE_BARRIER, additional_offset,
parameter_mode, CheckBounds::kDebugOnly);
}
void StorePropertyArrayElement(
TNode<PropertyArray> array, Node* index, SloppyTNode<Object> value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS) {
StoreFixedArrayOrPropertyArrayElement(array, index, value, barrier_mode,
additional_offset, parameter_mode);
}
void StoreFixedArrayElement(
TNode<FixedArray> array, TNode<Smi> index, TNode<Object> value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER) {
StoreFixedArrayElement(array, index, value, barrier_mode, 0,
SMI_PARAMETERS);
}
void StoreFixedArrayElement(
TNode<FixedArray> array, TNode<IntPtrT> index, TNode<Smi> value,
WriteBarrierMode barrier_mode = SKIP_WRITE_BARRIER,
int additional_offset = 0) {
DCHECK_EQ(SKIP_WRITE_BARRIER, barrier_mode);
StoreFixedArrayElement(array, index, TNode<Object>{value},
UNSAFE_SKIP_WRITE_BARRIER, additional_offset);
}
void StoreFixedArrayElement(
TNode<FixedArray> array, TNode<Smi> index, TNode<Smi> value,
WriteBarrierMode barrier_mode = SKIP_WRITE_BARRIER,
int additional_offset = 0) {
DCHECK_EQ(SKIP_WRITE_BARRIER, barrier_mode);
StoreFixedArrayElement(array, index, TNode<Object>{value},
UNSAFE_SKIP_WRITE_BARRIER, additional_offset,
SMI_PARAMETERS);
}
void StoreFixedDoubleArrayElement(
TNode<FixedDoubleArray> object, Node* index, TNode<Float64T> value,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
CheckBounds check_bounds = CheckBounds::kAlways);
// This doesn't emit a bounds-check. As part of the security-performance
// tradeoff, only use it if it is performance critical.
void UnsafeStoreFixedDoubleArrayElement(
TNode<FixedDoubleArray> object, Node* index, TNode<Float64T> value,
ParameterMode parameter_mode = INTPTR_PARAMETERS) {
return StoreFixedDoubleArrayElement(object, index, value, parameter_mode,
CheckBounds::kDebugOnly);
}
void StoreFixedDoubleArrayElementSmi(TNode<FixedDoubleArray> object,
TNode<Smi> index,
TNode<Float64T> value) {
StoreFixedDoubleArrayElement(object, index, value, SMI_PARAMETERS);
}
void StoreFixedDoubleArrayHole(TNode<FixedDoubleArray> array, Node* index,
ParameterMode mode = INTPTR_PARAMETERS);
void StoreFixedDoubleArrayHoleSmi(TNode<FixedDoubleArray> array,
TNode<Smi> index) {
StoreFixedDoubleArrayHole(array, index, SMI_PARAMETERS);
}
void StoreFeedbackVectorSlot(
Node* object, Node* index, Node* value,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
int additional_offset = 0,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
void EnsureArrayLengthWritable(TNode<Map> map, Label* bailout);
// EnsureArrayPushable verifies that receiver with this map is:
// 1. Is not a prototype.
// 2. Is not a dictionary.
// 3. Has a writeable length property.
// It returns ElementsKind as a node for further division into cases.
TNode<Int32T> EnsureArrayPushable(TNode<Map> map, Label* bailout);
void TryStoreArrayElement(ElementsKind kind, ParameterMode mode,
Label* bailout, Node* elements, Node* index,
Node* value);
// Consumes args into the array, and returns tagged new length.
TNode<Smi> BuildAppendJSArray(ElementsKind kind, SloppyTNode<JSArray> array,
CodeStubArguments* args,
TVariable<IntPtrT>* arg_index, Label* bailout);
// Pushes value onto the end of array.
void BuildAppendJSArray(ElementsKind kind, Node* array, Node* value,
Label* bailout);
void StoreFieldsNoWriteBarrier(Node* start_address, Node* end_address,
Node* value);
Node* AllocateCellWithValue(Node* value,
WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
Node* AllocateSmiCell(int value = 0) {
return AllocateCellWithValue(SmiConstant(value), SKIP_WRITE_BARRIER);
}
Node* LoadCellValue(Node* cell);
void StoreCellValue(Node* cell, Node* value,
WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
// Allocate a HeapNumber without initializing its value.
TNode<HeapNumber> AllocateHeapNumber();
// Allocate a HeapNumber with a specific value.
TNode<HeapNumber> AllocateHeapNumberWithValue(SloppyTNode<Float64T> value);
TNode<HeapNumber> AllocateHeapNumberWithValue(double value) {
return AllocateHeapNumberWithValue(Float64Constant(value));
}
// Allocate a MutableHeapNumber with a specific value.
TNode<MutableHeapNumber> AllocateMutableHeapNumberWithValue(
SloppyTNode<Float64T> value);
// Allocate a BigInt with {length} digits. Sets the sign bit to {false}.
// Does not initialize the digits.
TNode<BigInt> AllocateBigInt(TNode<IntPtrT> length);
// Like above, but allowing custom bitfield initialization.
TNode<BigInt> AllocateRawBigInt(TNode<IntPtrT> length);
void StoreBigIntBitfield(TNode<BigInt> bigint, TNode<Word32T> bitfield);
void StoreBigIntDigit(TNode<BigInt> bigint, intptr_t digit_index,
TNode<UintPtrT> digit);
void StoreBigIntDigit(TNode<BigInt> bigint, TNode<IntPtrT> digit_index,
TNode<UintPtrT> digit);
TNode<Word32T> LoadBigIntBitfield(TNode<BigInt> bigint);
TNode<UintPtrT> LoadBigIntDigit(TNode<BigInt> bigint, intptr_t digit_index);
TNode<UintPtrT> LoadBigIntDigit(TNode<BigInt> bigint,
TNode<IntPtrT> digit_index);
// Allocate a ByteArray with the given length.
TNode<ByteArray> AllocateByteArray(TNode<UintPtrT> length,
AllocationFlags flags = kNone);
// Allocate a SeqOneByteString with the given length.
TNode<String> AllocateSeqOneByteString(uint32_t length,
AllocationFlags flags = kNone);
TNode<String> AllocateSeqOneByteString(Node* context, TNode<Uint32T> length,
AllocationFlags flags = kNone);
// Allocate a SeqTwoByteString with the given length.
TNode<String> AllocateSeqTwoByteString(uint32_t length,
AllocationFlags flags = kNone);
TNode<String> AllocateSeqTwoByteString(Node* context, TNode<Uint32T> length,
AllocationFlags flags = kNone);
// Allocate a SlicedOneByteString with the given length, parent and offset.
// |length| and |offset| are expected to be tagged.
TNode<String> AllocateSlicedOneByteString(TNode<Uint32T> length,
TNode<String> parent,
TNode<Smi> offset);
// Allocate a SlicedTwoByteString with the given length, parent and offset.
// |length| and |offset| are expected to be tagged.
TNode<String> AllocateSlicedTwoByteString(TNode<Uint32T> length,
TNode<String> parent,
TNode<Smi> offset);
// Allocate an appropriate one- or two-byte ConsString with the first and
// second parts specified by |left| and |right|.
TNode<String> AllocateConsString(TNode<Uint32T> length, TNode<String> left,
TNode<String> right);
TNode<NameDictionary> AllocateNameDictionary(int at_least_space_for);
TNode<NameDictionary> AllocateNameDictionary(
TNode<IntPtrT> at_least_space_for, AllocationFlags = kNone);
TNode<NameDictionary> AllocateNameDictionaryWithCapacity(
TNode<IntPtrT> capacity, AllocationFlags = kNone);
TNode<NameDictionary> CopyNameDictionary(TNode<NameDictionary> dictionary,
Label* large_object_fallback);
template <typename CollectionType>
Node* AllocateOrderedHashTable();
// Builds code that finds OrderedHashTable entry for a key with hash code
// {hash} with using the comparison code generated by {key_compare}. The code
// jumps to {entry_found} if the key is found, or to {not_found} if the key
// was not found. In the {entry_found} branch, the variable
// entry_start_position will be bound to the index of the entry (relative to
// OrderedHashTable::kHashTableStartIndex).
//
// The {CollectionType} template parameter stands for the particular instance
// of OrderedHashTable, it should be OrderedHashMap or OrderedHashSet.
template <typename CollectionType>
void FindOrderedHashTableEntry(
Node* table, Node* hash,
const std::function<void(Node*, Label*, Label*)>& key_compare,
Variable* entry_start_position, Label* entry_found, Label* not_found);
template <typename CollectionType>
TNode<CollectionType> AllocateSmallOrderedHashTable(TNode<IntPtrT> capacity);
Node* AllocateStruct(Node* map, AllocationFlags flags = kNone);
void InitializeStructBody(Node* object, Node* map, Node* size,
int start_offset = Struct::kHeaderSize);
TNode<JSObject> AllocateJSObjectFromMap(
SloppyTNode<Map> map, SloppyTNode<HeapObject> properties = nullptr,
SloppyTNode<FixedArray> elements = nullptr, AllocationFlags flags = kNone,
SlackTrackingMode slack_tracking_mode = kNoSlackTracking);
void InitializeJSObjectFromMap(
Node* object, Node* map, Node* instance_size, Node* properties = nullptr,
Node* elements = nullptr,
SlackTrackingMode slack_tracking_mode = kNoSlackTracking);
void InitializeJSObjectBodyWithSlackTracking(Node* object, Node* map,
Node* instance_size);
void InitializeJSObjectBodyNoSlackTracking(
Node* object, Node* map, Node* instance_size,
int start_offset = JSObject::kHeaderSize);
TNode<BoolT> IsValidFastJSArrayCapacity(Node* capacity,
ParameterMode capacity_mode);
//
// Allocate and return a JSArray with initialized header fields and its
// uninitialized elements.
// The ParameterMode argument is only used for the capacity parameter.
std::pair<TNode<JSArray>, TNode<FixedArrayBase>>
AllocateUninitializedJSArrayWithElements(
ElementsKind kind, TNode<Map> array_map, TNode<Smi> length,
Node* allocation_site, Node* capacity,
ParameterMode capacity_mode = INTPTR_PARAMETERS,
AllocationFlags allocation_flags = kNone,
int array_header_size = JSArray::kSize);
// Allocate a JSArray and fill elements with the hole.
// The ParameterMode argument is only used for the capacity parameter.
TNode<JSArray> AllocateJSArray(
ElementsKind kind, TNode<Map> array_map, Node* capacity,
TNode<Smi> length, Node* allocation_site = nullptr,
ParameterMode capacity_mode = INTPTR_PARAMETERS,
AllocationFlags allocation_flags = kNone);
TNode<JSArray> AllocateJSArray(ElementsKind kind, TNode<Map> array_map,
TNode<Smi> capacity, TNode<Smi> length) {
return AllocateJSArray(kind, array_map, capacity, length, nullptr,
SMI_PARAMETERS);
}
TNode<JSArray> AllocateJSArray(ElementsKind kind, TNode<Map> array_map,
TNode<IntPtrT> capacity, TNode<Smi> length,
AllocationFlags allocation_flags = kNone) {
return AllocateJSArray(kind, array_map, capacity, length, nullptr,
INTPTR_PARAMETERS, allocation_flags);
}
// Allocate a JSArray and initialize the header fields.
TNode<JSArray> AllocateJSArray(TNode<Map> array_map,
TNode<FixedArrayBase> elements,
TNode<Smi> length,
Node* allocation_site = nullptr,
int array_header_size = JSArray::kSize);
enum class HoleConversionMode { kDontConvert, kConvertToUndefined };
// Clone a fast JSArray |array| into a new fast JSArray.
// |convert_holes| tells the function to convert holes into undefined or not.
// If |convert_holes| is set to kConvertToUndefined, but the function did not
// find any hole in |array|, the resulting array will have the same elements
// kind as |array|. If the function did find a hole, it will convert holes in
// |array| to undefined in the resulting array, who will now have
// PACKED_ELEMENTS kind.
// If |convert_holes| is set kDontConvert, holes are also copied to the
// resulting array, who will have the same elements kind as |array|. The
// function generates significantly less code in this case.
Node* CloneFastJSArray(
Node* context, Node* array, ParameterMode mode = INTPTR_PARAMETERS,
Node* allocation_site = nullptr,
HoleConversionMode convert_holes = HoleConversionMode::kDontConvert);
Node* ExtractFastJSArray(Node* context, Node* array, Node* begin, Node* count,
ParameterMode mode = INTPTR_PARAMETERS,
Node* capacity = nullptr,
Node* allocation_site = nullptr);
TNode<FixedArrayBase> AllocateFixedArray(
ElementsKind kind, Node* capacity, ParameterMode mode = INTPTR_PARAMETERS,
AllocationFlags flags = kNone,
SloppyTNode<Map> fixed_array_map = nullptr);
TNode<FixedArrayBase> AllocateFixedArray(
ElementsKind kind, TNode<IntPtrT> capacity, AllocationFlags flags,
SloppyTNode<Map> fixed_array_map = nullptr) {
return AllocateFixedArray(kind, capacity, INTPTR_PARAMETERS, flags,
fixed_array_map);
}
TNode<Map> GetStructMap(InstanceType instance_type);
TNode<FixedArray> AllocateUninitializedFixedArray(intptr_t capacity) {
return UncheckedCast<FixedArray>(AllocateFixedArray(
PACKED_ELEMENTS, IntPtrConstant(capacity), AllocationFlag::kNone));
}
TNode<FixedArray> AllocateZeroedFixedArray(TNode<IntPtrT> capacity) {
TNode<FixedArray> result = UncheckedCast<FixedArray>(
AllocateFixedArray(PACKED_ELEMENTS, capacity,
AllocationFlag::kAllowLargeObjectAllocation));
FillFixedArrayWithSmiZero(result, capacity);
return result;
}
TNode<FixedDoubleArray> AllocateZeroedFixedDoubleArray(
TNode<IntPtrT> capacity) {
TNode<FixedDoubleArray> result = UncheckedCast<FixedDoubleArray>(
AllocateFixedArray(PACKED_DOUBLE_ELEMENTS, capacity,
AllocationFlag::kAllowLargeObjectAllocation));
FillFixedDoubleArrayWithZero(result, capacity);
return result;
}
TNode<FixedArray> AllocateFixedArrayWithHoles(TNode<IntPtrT> capacity,
AllocationFlags flags) {
TNode<FixedArray> result = UncheckedCast<FixedArray>(
AllocateFixedArray(PACKED_ELEMENTS, capacity, flags));
FillFixedArrayWithValue(PACKED_ELEMENTS, result, IntPtrConstant(0),
capacity, RootIndex::kTheHoleValue);
return result;
}
TNode<FixedDoubleArray> AllocateFixedDoubleArrayWithHoles(
TNode<IntPtrT> capacity, AllocationFlags flags) {
TNode<FixedDoubleArray> result = UncheckedCast<FixedDoubleArray>(
AllocateFixedArray(PACKED_DOUBLE_ELEMENTS, capacity, flags));
FillFixedArrayWithValue(PACKED_DOUBLE_ELEMENTS, result, IntPtrConstant(0),
capacity, RootIndex::kTheHoleValue);
return result;
}
Node* AllocatePropertyArray(Node* capacity,
ParameterMode mode = INTPTR_PARAMETERS,
AllocationFlags flags = kNone);
// Perform CreateArrayIterator (ES #sec-createarrayiterator).
TNode<JSArrayIterator> CreateArrayIterator(TNode<Context> context,
TNode<Object> object,
IterationKind mode);
TNode<JSObject> AllocateJSIteratorResult(SloppyTNode<Context> context,
SloppyTNode<Object> value,
SloppyTNode<Oddball> done);
Node* AllocateJSIteratorResultForEntry(Node* context, Node* key, Node* value);
TNode<JSReceiver> ArraySpeciesCreate(TNode<Context> context,
TNode<Object> originalArray,
TNode<Number> len);
void FillFixedArrayWithValue(ElementsKind kind, Node* array, Node* from_index,
Node* to_index, RootIndex value_root_index,
ParameterMode mode = INTPTR_PARAMETERS);
// Uses memset to effectively initialize the given FixedArray with zeroes.
void FillFixedArrayWithSmiZero(TNode<FixedArray> array,
TNode<IntPtrT> length);
void FillFixedDoubleArrayWithZero(TNode<FixedDoubleArray> array,
TNode<IntPtrT> length);
void FillPropertyArrayWithUndefined(Node* array, Node* from_index,
Node* to_index,
ParameterMode mode = INTPTR_PARAMETERS);
enum class DestroySource { kNo, kYes };
// Specify DestroySource::kYes if {from_array} is being supplanted by
// {to_array}. This offers a slight performance benefit by simply copying the
// array word by word. The source may be destroyed at the end of this macro.
//
// Otherwise, specify DestroySource::kNo for operations where an Object is
// being cloned, to ensure that MutableHeapNumbers are unique between the
// source and cloned object.
void CopyPropertyArrayValues(Node* from_array, Node* to_array, Node* length,
WriteBarrierMode barrier_mode,
ParameterMode mode,
DestroySource destroy_source);
// Copies all elements from |from_array| of |length| size to
// |to_array| of the same size respecting the elements kind.
void CopyFixedArrayElements(
ElementsKind kind, Node* from_array, Node* to_array, Node* length,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
ParameterMode mode = INTPTR_PARAMETERS) {
CopyFixedArrayElements(kind, from_array, kind, to_array,
IntPtrOrSmiConstant(0, mode), length, length,
barrier_mode, mode);
}
// Copies |element_count| elements from |from_array| starting from element
// zero to |to_array| of |capacity| size respecting both array's elements
// kinds.
void CopyFixedArrayElements(
ElementsKind from_kind, Node* from_array, ElementsKind to_kind,
Node* to_array, Node* element_count, Node* capacity,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
ParameterMode mode = INTPTR_PARAMETERS) {
CopyFixedArrayElements(from_kind, from_array, to_kind, to_array,
IntPtrOrSmiConstant(0, mode), element_count,
capacity, barrier_mode, mode);
}
// Copies |element_count| elements from |from_array| starting from element
// |first_element| to |to_array| of |capacity| size respecting both array's
// elements kinds.
// |convert_holes| tells the function whether to convert holes to undefined.
// |var_holes_converted| can be used to signify that the conversion happened
// (i.e. that there were holes). If |convert_holes_to_undefined| is
// HoleConversionMode::kConvertToUndefined, then it must not be the case that
// IsDoubleElementsKind(to_kind).
void CopyFixedArrayElements(
ElementsKind from_kind, Node* from_array, ElementsKind to_kind,
Node* to_array, Node* first_element, Node* element_count, Node* capacity,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
ParameterMode mode = INTPTR_PARAMETERS,
HoleConversionMode convert_holes = HoleConversionMode::kDontConvert,
TVariable<BoolT>* var_holes_converted = nullptr);
void CopyFixedArrayElements(
ElementsKind from_kind, TNode<FixedArrayBase> from_array,
ElementsKind to_kind, TNode<FixedArrayBase> to_array,
TNode<Smi> first_element, TNode<Smi> element_count, TNode<Smi> capacity,
WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER) {
CopyFixedArrayElements(from_kind, from_array, to_kind, to_array,
first_element, element_count, capacity, barrier_mode,
SMI_PARAMETERS);
}
void JumpIfPointersFromHereAreInteresting(TNode<Object> object,
Label* interesting);
// Efficiently copy elements within a single array. The regions
// [src_index, src_index + length) and [dst_index, dst_index + length)
// can be overlapping.
void MoveElements(ElementsKind kind, TNode<FixedArrayBase> elements,
TNode<IntPtrT> dst_index, TNode<IntPtrT> src_index,
TNode<IntPtrT> length);
// Efficiently copy elements from one array to another. The ElementsKind
// needs to be the same. Copy from src_elements at
// [src_index, src_index + length) to dst_elements at
// [dst_index, dst_index + length).
// The function decides whether it can use memcpy. In case it cannot,
// |write_barrier| can help it to skip write barrier. SKIP_WRITE_BARRIER is
// only safe when copying to new space, or when copying to old space and the
// array does not contain object pointers.
void CopyElements(ElementsKind kind, TNode<FixedArrayBase> dst_elements,
TNode<IntPtrT> dst_index,
TNode<FixedArrayBase> src_elements,
TNode<IntPtrT> src_index, TNode<IntPtrT> length,
WriteBarrierMode write_barrier = UPDATE_WRITE_BARRIER);
TNode<FixedArray> HeapObjectToFixedArray(TNode<HeapObject> base,
Label* cast_fail);
TNode<FixedDoubleArray> HeapObjectToFixedDoubleArray(TNode<HeapObject> base,
Label* cast_fail) {
GotoIf(
WordNotEqual(LoadMap(base), LoadRoot(RootIndex::kFixedDoubleArrayMap)),
cast_fail);
return UncheckedCast<FixedDoubleArray>(base);
}
TNode<SloppyArgumentsElements> HeapObjectToSloppyArgumentsElements(
TNode<HeapObject> base, Label* cast_fail) {
GotoIf(WordNotEqual(LoadMap(base),
LoadRoot(RootIndex::kSloppyArgumentsElementsMap)),
cast_fail);
return UncheckedCast<SloppyArgumentsElements>(base);
}
TNode<Int32T> ConvertElementsKindToInt(TNode<Int32T> elements_kind) {
return UncheckedCast<Int32T>(elements_kind);
}
enum class ExtractFixedArrayFlag {
kFixedArrays = 1,
kFixedDoubleArrays = 2,
kDontCopyCOW = 4,
kNewSpaceAllocationOnly = 8,
kAllFixedArrays = kFixedArrays | kFixedDoubleArrays,
kAllFixedArraysDontCopyCOW = kAllFixedArrays | kDontCopyCOW
};
using ExtractFixedArrayFlags = base::Flags<ExtractFixedArrayFlag>;
// Copy a portion of an existing FixedArray or FixedDoubleArray into a new
// array, including special appropriate handling for empty arrays and COW
// arrays. The result array will be of the same type as the original array.
//
// * |source| is either a FixedArray or FixedDoubleArray from which to copy
// elements.
// * |first| is the starting element index to copy from, if nullptr is passed
// then index zero is used by default.
// * |count| is the number of elements to copy out of the source array
// starting from and including the element indexed by |start|. If |count| is
// nullptr, then all of the elements from |start| to the end of |source| are
// copied.
// * |capacity| determines the size of the allocated result array, with
// |capacity| >= |count|. If |capacity| is nullptr, then |count| is used as
// the destination array's capacity.
// * |extract_flags| determines whether FixedArrays, FixedDoubleArrays or both
// are detected and copied. Although it's always correct to pass
// kAllFixedArrays, the generated code is more compact and efficient if the
// caller can specify whether only FixedArrays or FixedDoubleArrays will be
// passed as the |source| parameter.
// * |parameter_mode| determines the parameter mode of |first|, |count| and
// |capacity|.
// * If |var_holes_converted| is given, any holes will be converted to
// undefined and the variable will be set according to whether or not there
// were any hole.
// * If |source_elements_kind| is given, the function will try to use the
// runtime elements kind of source to make copy faster. More specifically, it
// can skip write barriers.
TNode<FixedArrayBase> ExtractFixedArray(
Node* source, Node* first, Node* count = nullptr,
Node* capacity = nullptr,
ExtractFixedArrayFlags extract_flags =
ExtractFixedArrayFlag::kAllFixedArrays,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
TVariable<BoolT>* var_holes_converted = nullptr,
Node* source_elements_kind = nullptr);
TNode<FixedArrayBase> ExtractFixedArray(
TNode<FixedArrayBase> source, TNode<Smi> first, TNode<Smi> count,
TNode<Smi> capacity,
ExtractFixedArrayFlags extract_flags =
ExtractFixedArrayFlag::kAllFixedArrays) {
return ExtractFixedArray(source, first, count, capacity, extract_flags,
SMI_PARAMETERS);
}
TNode<FixedArray> ExtractFixedArray(
TNode<FixedArray> source, TNode<IntPtrT> first, TNode<IntPtrT> count,
TNode<IntPtrT> capacity,
ExtractFixedArrayFlags extract_flags =
ExtractFixedArrayFlag::kAllFixedArrays) {
return CAST(ExtractFixedArray(source, first, count, capacity, extract_flags,
INTPTR_PARAMETERS));
}
// Copy a portion of an existing FixedArray or FixedDoubleArray into a new
// FixedArray, including special appropriate handling for COW arrays.
// * |source| is either a FixedArray or FixedDoubleArray from which to copy
// elements. |source| is assumed to be non-empty.
// * |first| is the starting element index to copy from.
// * |count| is the number of elements to copy out of the source array
// starting from and including the element indexed by |start|.
// * |capacity| determines the size of the allocated result array, with
// |capacity| >= |count|.
// * |source_map| is the map of the |source|.
// * |from_kind| is the elements kind that is consistent with |source| being
// a FixedArray or FixedDoubleArray. This function only cares about double vs.
// non-double, so as to distinguish FixedDoubleArray vs. FixedArray. It does
// not care about holeyness. For example, when |source| is a FixedArray,
// PACKED/HOLEY_ELEMENTS can be used, but not PACKED_DOUBLE_ELEMENTS.
// * |allocation_flags| and |extract_flags| influence how the target
// FixedArray is allocated.
// * |parameter_mode| determines the parameter mode of |first|, |count| and
// |capacity|.
// * |convert_holes| is used to signify that the target array should use
// undefined in places of holes.
// * If |convert_holes| is true and |var_holes_converted| not nullptr, then
// |var_holes_converted| is used to signal whether any holes were found and
// converted. The caller should use this information to decide which map is
// compatible with the result array. For example, if the input was of
// HOLEY_SMI_ELEMENTS kind, and a conversion took place, the result will be
// compatible only with HOLEY_ELEMENTS and PACKED_ELEMENTS.
TNode<FixedArray> ExtractToFixedArray(
Node* source, Node* first, Node* count, Node* capacity, Node* source_map,
ElementsKind from_kind = PACKED_ELEMENTS,
AllocationFlags allocation_flags = AllocationFlag::kNone,
ExtractFixedArrayFlags extract_flags =
ExtractFixedArrayFlag::kAllFixedArrays,
ParameterMode parameter_mode = INTPTR_PARAMETERS,
HoleConversionMode convert_holes = HoleConversionMode::kDontConvert,
TVariable<BoolT>* var_holes_converted = nullptr,
Node* source_runtime_kind = nullptr);
// Attempt to copy a FixedDoubleArray to another FixedDoubleArray. In the case
// where the source array has a hole, produce a FixedArray instead where holes
// are replaced with undefined.
// * |source| is a FixedDoubleArray from which to copy elements.
// * |first| is the starting element index to copy from.
// * |count| is the number of elements to copy out of the source array
// starting from and including the element indexed by |start|.
// * |capacity| determines the size of the allocated result array, with
// |capacity| >= |count|.
// * |source_map| is the map of |source|. It will be used as the map of the
// target array if the target can stay a FixedDoubleArray. Otherwise if the
// target array needs to be a FixedArray, the FixedArrayMap will be used.
// * |var_holes_converted| is used to signal whether a FixedAray
// is produced or not.
// * |allocation_flags| and |extract_flags| influence how the target array is
// allocated.
// * |parameter_mode| determines the parameter mode of |first|, |count| and
// |capacity|.
TNode<FixedArrayBase> ExtractFixedDoubleArrayFillingHoles(
Node* source, Node* first, Node* count, Node* capacity, Node* source_map,
TVariable<BoolT>* var_holes_converted, AllocationFlags allocation_flags,
ExtractFixedArrayFlags extract_flags =
ExtractFixedArrayFlag::kAllFixedArrays,
ParameterMode parameter_mode = INTPTR_PARAMETERS);
// Copy the entire contents of a FixedArray or FixedDoubleArray to a new
// array, including special appropriate handling for empty arrays and COW
// arrays.
//
// * |source| is either a FixedArray or FixedDoubleArray from which to copy
// elements.
// * |extract_flags| determines whether FixedArrays, FixedDoubleArrays or both
// are detected and copied. Although it's always correct to pass
// kAllFixedArrays, the generated code is more compact and efficient if the
// caller can specify whether only FixedArrays or FixedDoubleArrays will be
// passed as the |source| parameter.
Node* CloneFixedArray(Node* source,
ExtractFixedArrayFlags flags =
ExtractFixedArrayFlag::kAllFixedArraysDontCopyCOW) {
ParameterMode mode = OptimalParameterMode();
return ExtractFixedArray(source, IntPtrOrSmiConstant(0, mode), nullptr,
nullptr, flags, mode);
}
// Copies |character_count| elements from |from_string| to |to_string|
// starting at the |from_index|'th character. |from_string| and |to_string|
// can either be one-byte strings or two-byte strings, although if
// |from_string| is two-byte, then |to_string| must be two-byte.
// |from_index|, |to_index| and |character_count| must be intptr_ts s.t. 0 <=
// |from_index| <= |from_index| + |character_count| <= from_string.length and
// 0 <= |to_index| <= |to_index| + |character_count| <= to_string.length.
void CopyStringCharacters(Node* from_string, Node* to_string,
TNode<IntPtrT> from_index, TNode<IntPtrT> to_index,
TNode<IntPtrT> character_count,
String::Encoding from_encoding,
String::Encoding to_encoding);
// Loads an element from |array| of |from_kind| elements by given |offset|
// (NOTE: not index!), does a hole check if |if_hole| is provided and
// converts the value so that it becomes ready for storing to array of
// |to_kind| elements.
Node* LoadElementAndPrepareForStore(Node* array, Node* offset,
ElementsKind from_kind,
ElementsKind to_kind, Label* if_hole);
Node* CalculateNewElementsCapacity(Node* old_capacity,
ParameterMode mode = INTPTR_PARAMETERS);
TNode<Smi> CalculateNewElementsCapacity(TNode<Smi> old_capacity) {
return CAST(CalculateNewElementsCapacity(old_capacity, SMI_PARAMETERS));
}
TNode<IntPtrT> CalculateNewElementsCapacity(TNode<IntPtrT> old_capacity) {
return UncheckedCast<IntPtrT>(
CalculateNewElementsCapacity(old_capacity, INTPTR_PARAMETERS));
}
// Tries to grow the |elements| array of given |object| to store the |key|
// or bails out if the growing gap is too big. Returns new elements.
Node* TryGrowElementsCapacity(Node* object, Node* elements, ElementsKind kind,
Node* key, Label* bailout);
// Tries to grow the |capacity|-length |elements| array of given |object|
// to store the |key| or bails out if the growing gap is too big. Returns
// new elements.
Node* TryGrowElementsCapacity(Node* object, Node* elements, ElementsKind kind,
Node* key, Node* capacity, ParameterMode mode,
Label* bailout);
// Grows elements capacity of given object. Returns new elements.
Node* GrowElementsCapacity(Node* object, Node* elements,
ElementsKind from_kind, ElementsKind to_kind,
Node* capacity, Node* new_capacity,
ParameterMode mode, Label* bailout);
// Given a need to grow by |growth|, allocate an appropriate new capacity
// if necessary, and return a new elements FixedArray object. Label |bailout|
// is followed for allocation failure.
void PossiblyGrowElementsCapacity(ParameterMode mode, ElementsKind kind,
Node* array, Node* length,
Variable* var_elements, Node* growth,
Label* bailout);
// Allocation site manipulation
void InitializeAllocationMemento(Node* base_allocation,
Node* base_allocation_size,
Node* allocation_site);
Node* TryTaggedToFloat64(Node* value, Label* if_valueisnotnumber);
Node* TruncateTaggedToFloat64(Node* context, Node* value);
Node* TruncateTaggedToWord32(Node* context, Node* value);
void TaggedToWord32OrBigInt(Node* context, Node* value, Label* if_number,
Variable* var_word32, Label* if_bigint,
Variable* var_bigint);
void TaggedToWord32OrBigIntWithFeedback(
Node* context, Node* value, Label* if_number, Variable* var_word32,
Label* if_bigint, Variable* var_bigint, Variable* var_feedback);
// Truncate the floating point value of a HeapNumber to an Int32.
TNode<Int32T> TruncateHeapNumberValueToWord32(TNode<HeapNumber> object);
// Conversions.
void TryHeapNumberToSmi(TNode<HeapNumber> number,
TVariable<Smi>& output, // NOLINT(runtime/references)
Label* if_smi);
void TryFloat64ToSmi(TNode<Float64T> number,
TVariable<Smi>& output, // NOLINT(runtime/references)
Label* if_smi);
TNode<Number> ChangeFloat64ToTagged(SloppyTNode<Float64T> value);
TNode<Number> ChangeInt32ToTagged(SloppyTNode<Int32T> value);
TNode<Number> ChangeUint32ToTagged(SloppyTNode<Uint32T> value);
TNode<Number> ChangeUintPtrToTagged(TNode<UintPtrT> value);
TNode<Uint32T> ChangeNumberToUint32(TNode<Number> value);
TNode<Float64T> ChangeNumberToFloat64(TNode<Number> value);
TNode<UintPtrT> TryNumberToUintPtr(TNode<Number> value, Label* if_negative);
TNode<UintPtrT> ChangeNonnegativeNumberToUintPtr(TNode<Number> value) {
return TryNumberToUintPtr(value, nullptr);
}
void TaggedToNumeric(Node* context, Node* value, Label* done,
Variable* var_numeric);
void TaggedToNumericWithFeedback(Node* context, Node* value, Label* done,
Variable* var_numeric,
Variable* var_feedback);
TNode<WordT> TimesSystemPointerSize(SloppyTNode<WordT> value);
TNode<IntPtrT> TimesSystemPointerSize(TNode<IntPtrT> value) {
return Signed(TimesSystemPointerSize(implicit_cast<TNode<WordT>>(value)));
}
TNode<UintPtrT> TimesSystemPointerSize(TNode<UintPtrT> value) {
return Unsigned(TimesSystemPointerSize(implicit_cast<TNode<WordT>>(value)));
}
TNode<WordT> TimesTaggedSize(SloppyTNode<WordT> value);
TNode<IntPtrT> TimesTaggedSize(TNode<IntPtrT> value) {
return Signed(TimesTaggedSize(implicit_cast<TNode<WordT>>(value)));
}
TNode<UintPtrT> TimesTaggedSize(TNode<UintPtrT> value) {
return Unsigned(TimesTaggedSize(implicit_cast<TNode<WordT>>(value)));
}
TNode<WordT> TimesDoubleSize(SloppyTNode<WordT> value);
TNode<UintPtrT> TimesDoubleSize(TNode<UintPtrT> value) {
return Unsigned(TimesDoubleSize(implicit_cast<TNode<WordT>>(value)));
}
TNode<IntPtrT> TimesDoubleSize(TNode<IntPtrT> value) {
return Signed(TimesDoubleSize(implicit_cast<TNode<WordT>>(value)));
}
// Type conversions.
// Throws a TypeError for {method_name} if {value} is not coercible to Object,
// or returns the {value} converted to a String otherwise.
TNode<String> ToThisString(TNode<Context> context, TNode<Object> value,
TNode<String> method_name);
TNode<String> ToThisString(TNode<Context> context, TNode<Object> value,
char const* method_name) {
return ToThisString(context, value, StringConstant(method_name));
}
// Throws a TypeError for {method_name} if {value} is neither of the given
// {primitive_type} nor a JSPrimitiveWrapper wrapping a value of
// {primitive_type}, or returns the {value} (or wrapped value) otherwise.
TNode<Object> ToThisValue(TNode<Context> context, TNode<Object> value,
PrimitiveType primitive_type,
char const* method_name);
// Throws a TypeError for {method_name} if {value} is not of the given
// instance type. Returns {value}'s map.
Node* ThrowIfNotInstanceType(Node* context, Node* value,
InstanceType instance_type,
char const* method_name);
// Throws a TypeError for {method_name} if {value} is not a JSReceiver.
// Returns the {value}'s map.
Node* ThrowIfNotJSReceiver(Node* context, Node* value,
MessageTemplate msg_template,
const char* method_name = nullptr);
void ThrowIfNotCallable(TNode<Context> context, TNode<Object> value,
const char* method_name);
void ThrowRangeError(Node* context, MessageTemplate message,
Node* arg0 = nullptr, Node* arg1 = nullptr,
Node* arg2 = nullptr);
void ThrowTypeError(Node* context, MessageTemplate message,
char const* arg0 = nullptr, char const* arg1 = nullptr);
void ThrowTypeError(Node* context, MessageTemplate message, Node* arg0,
Node* arg1 = nullptr, Node* arg2 = nullptr);
// Type checks.
// Check whether the map is for an object with special properties, such as a
// JSProxy or an object with interceptors.
TNode<BoolT> InstanceTypeEqual(SloppyTNode<Int32T> instance_type, int type);
TNode<BoolT> IsAccessorInfo(SloppyTNode<HeapObject> object);
TNode<BoolT> IsAccessorPair(SloppyTNode<HeapObject> object);
TNode<BoolT> IsAllocationSite(SloppyTNode<HeapObject> object);
TNode<BoolT> IsAnyHeapNumber(SloppyTNode<HeapObject> object);
TNode<BoolT> IsNoElementsProtectorCellInvalid();
TNode<BoolT> IsArrayIteratorProtectorCellInvalid();
TNode<BoolT> IsBigIntInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsBigInt(SloppyTNode<HeapObject> object);
TNode<BoolT> IsBoolean(SloppyTNode<HeapObject> object);
TNode<BoolT> IsCallableMap(SloppyTNode<Map> map);
TNode<BoolT> IsCallable(SloppyTNode<HeapObject> object);
TNode<BoolT> TaggedIsCallable(TNode<Object> object);
TNode<BoolT> IsCell(SloppyTNode<HeapObject> object);
TNode<BoolT> IsCode(SloppyTNode<HeapObject> object);
TNode<BoolT> IsConsStringInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsConstructorMap(SloppyTNode<Map> map);
TNode<BoolT> IsConstructor(SloppyTNode<HeapObject> object);
TNode<BoolT> IsDebugInfo(TNode<HeapObject> object);
TNode<BoolT> IsDeprecatedMap(SloppyTNode<Map> map);
TNode<BoolT> IsNameDictionary(SloppyTNode<HeapObject> object);
TNode<BoolT> IsGlobalDictionary(SloppyTNode<HeapObject> object);
TNode<BoolT> IsExtensibleMap(SloppyTNode<Map> map);
TNode<BoolT> IsFrozenOrSealedElementsKindMap(SloppyTNode<Map> map);
TNode<BoolT> IsExtensibleNonPrototypeMap(TNode<Map> map);
TNode<BoolT> IsExternalStringInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsFeedbackCell(SloppyTNode<HeapObject> object);
TNode<BoolT> IsFeedbackVector(SloppyTNode<HeapObject> object);
TNode<BoolT> IsContext(SloppyTNode<HeapObject> object);
TNode<BoolT> IsFixedArray(SloppyTNode<HeapObject> object);
TNode<BoolT> IsFixedArraySubclass(SloppyTNode<HeapObject> object);
TNode<BoolT> IsFixedArrayWithKind(SloppyTNode<HeapObject> object,
ElementsKind kind);
TNode<BoolT> IsFixedArrayWithKindOrEmpty(SloppyTNode<HeapObject> object,
ElementsKind kind);
TNode<BoolT> IsFixedDoubleArray(SloppyTNode<HeapObject> object);
TNode<BoolT> IsFunctionWithPrototypeSlotMap(SloppyTNode<Map> map);
TNode<BoolT> IsHashTable(SloppyTNode<HeapObject> object);
TNode<BoolT> IsEphemeronHashTable(SloppyTNode<HeapObject> object);
TNode<BoolT> IsHeapNumber(SloppyTNode<HeapObject> object);
TNode<BoolT> IsHeapNumberInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsOddball(SloppyTNode<HeapObject> object);
TNode<BoolT> IsOddballInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsIndirectStringInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSArrayBuffer(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSDataView(TNode<HeapObject> object);
TNode<BoolT> IsJSArrayInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSArrayMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSArray(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSArrayIterator(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSAsyncGeneratorObject(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSFunctionInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsAllocationSiteInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSFunctionMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSFunction(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSGeneratorObject(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSGlobalProxyInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSGlobalProxyMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSGlobalProxy(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSObjectInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSObjectMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSObject(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSPromiseMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSPromise(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSProxy(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSStringIterator(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSReceiverInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSReceiverMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSReceiver(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSRegExp(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSTypedArrayInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSTypedArrayMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSTypedArray(SloppyTNode<HeapObject> object);
TNode<BoolT> IsJSPrimitiveWrapperInstanceType(
SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsJSPrimitiveWrapperMap(SloppyTNode<Map> map);
TNode<BoolT> IsJSPrimitiveWrapper(SloppyTNode<HeapObject> object);
TNode<BoolT> IsMap(SloppyTNode<HeapObject> object);
TNode<BoolT> IsMutableHeapNumber(SloppyTNode<HeapObject> object);
TNode<BoolT> IsName(SloppyTNode<HeapObject> object);
TNode<BoolT> IsNameInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsNativeContext(SloppyTNode<HeapObject> object);
TNode<BoolT> IsNullOrJSReceiver(SloppyTNode<HeapObject> object);
TNode<BoolT> IsNullOrUndefined(SloppyTNode<Object> object);
TNode<BoolT> IsNumberDictionary(SloppyTNode<HeapObject> object);
TNode<BoolT> IsOneByteStringInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsPrimitiveInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsPrivateSymbol(SloppyTNode<HeapObject> object);
TNode<BoolT> IsPrivateName(SloppyTNode<Symbol> symbol);
TNode<BoolT> IsPromiseCapability(SloppyTNode<HeapObject> object);
TNode<BoolT> IsPropertyArray(SloppyTNode<HeapObject> object);
TNode<BoolT> IsPropertyCell(SloppyTNode<HeapObject> object);
TNode<BoolT> IsPrototypeInitialArrayPrototype(SloppyTNode<Context> context,
SloppyTNode<Map> map);
TNode<BoolT> IsPrototypeTypedArrayPrototype(SloppyTNode<Context> context,
SloppyTNode<Map> map);
TNode<BoolT> IsFastAliasedArgumentsMap(TNode<Context> context,
TNode<Map> map);
TNode<BoolT> IsSlowAliasedArgumentsMap(TNode<Context> context,
TNode<Map> map);
TNode<BoolT> IsSloppyArgumentsMap(TNode<Context> context, TNode<Map> map);
TNode<BoolT> IsStrictArgumentsMap(TNode<Context> context, TNode<Map> map);
TNode<BoolT> IsSequentialStringInstanceType(
SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsUncachedExternalStringInstanceType(
SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsSpecialReceiverInstanceType(TNode<Int32T> instance_type);
TNode<BoolT> IsCustomElementsReceiverInstanceType(
TNode<Int32T> instance_type);
TNode<BoolT> IsSpecialReceiverMap(SloppyTNode<Map> map);
// Returns true if the map corresponds to non-special fast or dictionary
// object.
TNode<BoolT> IsSimpleObjectMap(TNode<Map> map);
TNode<BoolT> IsStringInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsString(SloppyTNode<HeapObject> object);
TNode<BoolT> IsSymbolInstanceType(SloppyTNode<Int32T> instance_type);
TNode<BoolT> IsSymbol(SloppyTNode<HeapObject> object);
TNode<BoolT> IsInternalizedStringInstanceType(TNode<Int32T> instance_type);
TNode<BoolT> IsUniqueName(TNode<HeapObject> object);
TNode<BoolT> IsUniqueNameNoIndex(TNode<HeapObject> object);
TNode<BoolT> IsUndetectableMap(SloppyTNode<Map> map);
TNode<BoolT> IsNotWeakFixedArraySubclass(SloppyTNode<HeapObject> object);
TNode<BoolT> IsZeroOrContext(SloppyTNode<Object> object);
inline Node* IsSharedFunctionInfo(Node* object) {
return IsSharedFunctionInfoMap(LoadMap(object));
}
TNode<BoolT> IsPromiseResolveProtectorCellInvalid();
TNode<BoolT> IsPromiseThenProtectorCellInvalid();
TNode<BoolT> IsArraySpeciesProtectorCellInvalid();
TNode<BoolT> IsTypedArraySpeciesProtectorCellInvalid();
TNode<BoolT> IsRegExpSpeciesProtectorCellInvalid(
TNode<Context> native_context);
TNode<BoolT> IsPromiseSpeciesProtectorCellInvalid();
TNode<BoolT> IsMockArrayBufferAllocatorFlag() {
TNode<Word32T> flag_value = UncheckedCast<Word32T>(Load(
MachineType::Uint8(),
ExternalConstant(
ExternalReference::address_of_mock_arraybuffer_allocator_flag())));
return Word32NotEqual(Word32And(flag_value, Int32Constant(0xFF)),
Int32Constant(0));
}
// True iff |object| is a Smi or a HeapNumber.
TNode<BoolT> IsNumber(SloppyTNode<Object> object);
// True iff |object| is a Smi or a HeapNumber or a BigInt.
TNode<BoolT> IsNumeric(SloppyTNode<Object> object);
// True iff |number| is either a Smi, or a HeapNumber whose value is not
// within Smi range.
TNode<BoolT> IsNumberNormalized(SloppyTNode<Number> number);
TNode<BoolT> IsNumberPositive(SloppyTNode<Number> number);
TNode<BoolT> IsHeapNumberPositive(TNode<HeapNumber> number);
// True iff {number} is non-negative and less or equal than 2**53-1.
TNode<BoolT> IsNumberNonNegativeSafeInteger(TNode<Number> number);
// True iff {number} represents an integer value.
TNode<BoolT> IsInteger(TNode<Object> number);
TNode<BoolT> IsInteger(TNode<HeapNumber> number);
// True iff abs({number}) <= 2**53 -1
TNode<BoolT> IsSafeInteger(TNode<Object> number);
TNode<BoolT> IsSafeInteger(TNode<HeapNumber> number);
// True iff {number} represents a valid uint32t value.
TNode<BoolT> IsHeapNumberUint32(TNode<HeapNumber> number);
// True iff {number} is a positive number and a valid array index in the range
// [0, 2^32-1).
TNode<BoolT> IsNumberArrayIndex(TNode<Number> number);
Node* FixedArraySizeDoesntFitInNewSpace(
Node* element_count, int base_size = FixedArray::kHeaderSize,
ParameterMode mode = INTPTR_PARAMETERS);
// ElementsKind helpers:
TNode<BoolT> ElementsKindEqual(TNode<Int32T> a, TNode<Int32T> b) {
return Word32Equal(a, b);
}
bool ElementsKindEqual(ElementsKind a, ElementsKind b) { return a == b; }
TNode<BoolT> IsFastElementsKind(TNode<Int32T> elements_kind);
bool IsFastElementsKind(ElementsKind kind) {
return v8::internal::IsFastElementsKind(kind);
}
TNode<BoolT> IsDictionaryElementsKind(TNode<Int32T> elements_kind) {
return ElementsKindEqual(elements_kind, Int32Constant(DICTIONARY_ELEMENTS));
}
TNode<BoolT> IsDoubleElementsKind(TNode<Int32T> elements_kind);
bool IsDoubleElementsKind(ElementsKind kind) {
return v8::internal::IsDoubleElementsKind(kind);
}
TNode<BoolT> IsFastSmiOrTaggedElementsKind(TNode<Int32T> elements_kind);
TNode<BoolT> IsFastSmiElementsKind(SloppyTNode<Int32T> elements_kind);
TNode<BoolT> IsHoleyFastElementsKind(TNode<Int32T> elements_kind);
TNode<BoolT> IsHoleyFastElementsKindForRead(TNode<Int32T> elements_kind);
TNode<BoolT> IsElementsKindGreaterThan(TNode<Int32T> target_kind,
ElementsKind reference_kind);
TNode<BoolT> IsElementsKindLessThanOrEqual(TNode<Int32T> target_kind,
ElementsKind reference_kind);
// Check if reference_kind_a <= target_kind <= reference_kind_b
TNode<BoolT> IsElementsKindInRange(TNode<Int32T> target_kind,
ElementsKind lower_reference_kind,
ElementsKind higher_reference_kind);
// String helpers.
// Load a character from a String (might flatten a ConsString).
TNode<Int32T> StringCharCodeAt(SloppyTNode<String> string,
SloppyTNode<IntPtrT> index);
// Return the single character string with only {code}.
TNode<String> StringFromSingleCharCode(TNode<Int32T> code);
// Return a new string object which holds a substring containing the range
// [from,to[ of string.
TNode<String> SubString(TNode<String> string, TNode<IntPtrT> from,
TNode<IntPtrT> to);
// Return a new string object produced by concatenating |first| with |second|.
TNode<String> StringAdd(Node* context, TNode<String> first,
TNode<String> second);
// Check if |string| is an indirect (thin or flat cons) string type that can
// be dereferenced by DerefIndirectString.
void BranchIfCanDerefIndirectString(Node* string, Node* instance_type,
Label* can_deref, Label* cannot_deref);
// Unpack an indirect (thin or flat cons) string type.
void DerefIndirectString(Variable* var_string, Node* instance_type);
// Check if |var_string| has an indirect (thin or flat cons) string type,
// and unpack it if so.
void MaybeDerefIndirectString(Variable* var_string, Node* instance_type,
Label* did_deref, Label* cannot_deref);
// Check if |var_left| or |var_right| has an indirect (thin or flat cons)
// string type, and unpack it/them if so. Fall through if nothing was done.
void MaybeDerefIndirectStrings(Variable* var_left, Node* left_instance_type,