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Commit b90c98fc authored by Marja Hölttä's avatar Marja Hölttä Committed by Commit Bot
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[objects.h splitting] Move SharedFunctionInfo. 

BUG=v8:5402

Change-Id: If5f763e6a11d446e36719277a18b00a0cd8df8fa
Reviewed-on: https://chromium-review.googlesource.com/517162
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: 's avatarMichael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45565}
parent 8f7af5fb
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Showing with 1213 additions and 1208 deletions
BUILD.gn
View file @ b90c98fc
......@@ -710,6 +710,8 @@ action("postmortem-metadata") {
"src/objects-inl.h",
"src/objects/map.h",
"src/objects/map-inl.h",
"src/objects/shared-function-info.h",
"src/objects/shared-function-info-inl.h",
]
outputs = [
......@@ -1778,6 +1780,8 @@ v8_source_set("v8_base") {
"src/objects/regexp-match-info.h",
"src/objects/scope-info.cc",
"src/objects/scope-info.h",
"src/objects/shared-function-info-inl.h",
"src/objects/shared-function-info.h",
"src/objects/string-table.h",
"src/ostreams.cc",
"src/ostreams.h",
......
src/bootstrapper.h
View file @ b90c98fc
......@@ -6,6 +6,7 @@
#define V8_BOOTSTRAPPER_H_
#include "src/factory.h"
#include "src/objects/shared-function-info.h"
#include "src/snapshot/natives.h"
#include "src/visitors.h"
......
src/compiler/frame-states.h
View file @ b90c98fc
......@@ -6,14 +6,12 @@
#define V8_COMPILER_FRAME_STATES_H_
#include "src/handles.h"
#include "src/objects/shared-function-info.h"
#include "src/utils.h"
namespace v8 {
namespace internal {
// Forward declarations.
class SharedFunctionInfo;
namespace compiler {
// Flag that describes how to combine the current environment with
......
src/compiler/pipeline-statistics.cc
View file @ b90c98fc
......@@ -8,6 +8,7 @@
#include "src/compiler/pipeline-statistics.h"
#include "src/compiler/zone-stats.h"
#include "src/isolate.h"
#include "src/objects/shared-function-info.h"
namespace v8 {
namespace internal {
......
src/contexts-inl.h
View file @ b90c98fc
......@@ -11,6 +11,7 @@
#include "src/objects/dictionary.h"
#include "src/objects/map-inl.h"
#include "src/objects/regexp-match-info.h"
#include "src/objects/shared-function-info-inl.h"
namespace v8 {
namespace internal {
......
src/feedback-vector-inl.h
View file @ b90c98fc
......@@ -8,6 +8,7 @@
#include "src/factory.h"
#include "src/feedback-vector.h"
#include "src/globals.h"
#include "src/objects/shared-function-info.h"
namespace v8 {
namespace internal {
......
src/heap/heap.cc
View file @ b90c98fc
......@@ -41,6 +41,7 @@
#include "src/heap/scavenger-inl.h"
#include "src/heap/store-buffer.h"
#include "src/interpreter/interpreter.h"
#include "src/objects/shared-function-info.h"
#include "src/regexp/jsregexp.h"
#include "src/runtime-profiler.h"
#include "src/snapshot/natives.h"
......@@ -6492,6 +6493,9 @@ void Heap::RememberUnmappedPage(Address page, bool compacted) {
remembered_unmapped_pages_index_ %= kRememberedUnmappedPages;
}
void Heap::AgeInlineCaches() {
global_ic_age_ = (global_ic_age_ + 1) & SharedFunctionInfo::ICAgeBits::kMax;
}
void Heap::RegisterStrongRoots(Object** start, Object** end) {
StrongRootsList* list = new StrongRootsList();
......
src/heap/heap.h
View file @ b90c98fc
......@@ -897,9 +897,7 @@ class Heap {
// disposal. We use it to flush inline caches.
int global_ic_age() { return global_ic_age_; }
void AgeInlineCaches() {
global_ic_age_ = (global_ic_age_ + 1) & SharedFunctionInfo::ICAgeBits::kMax;
}
void AgeInlineCaches();
int64_t external_memory_hard_limit() { return MaxOldGenerationSize() / 2; }
......
src/objects-inl.h
View file @ b90c98fc
......@@ -109,7 +109,6 @@ TYPE_CHECKER(Map, MAP_TYPE)
TYPE_CHECKER(MutableHeapNumber, MUTABLE_HEAP_NUMBER_TYPE)
TYPE_CHECKER(Oddball, ODDBALL_TYPE)
TYPE_CHECKER(PropertyCell, PROPERTY_CELL_TYPE)
TYPE_CHECKER(SharedFunctionInfo, SHARED_FUNCTION_INFO_TYPE)
TYPE_CHECKER(SourcePositionTableWithFrameCache, TUPLE2_TYPE)
TYPE_CHECKER(Symbol, SYMBOL_TYPE)
TYPE_CHECKER(TransitionArray, TRANSITION_ARRAY_TYPE)
......@@ -123,7 +122,6 @@ TYPE_CHECKER(SmallOrderedHashSet, SMALL_ORDERED_HASH_SET_TYPE)
TYPED_ARRAYS(TYPED_ARRAY_TYPE_CHECKER)
#undef TYPED_ARRAY_TYPE_CHECKER
#undef TYPE_CHECKER
bool HeapObject::IsFixedArrayBase() const {
return IsFixedArray() || IsFixedDoubleArray() || IsFixedTypedArrayBase();
......@@ -623,7 +621,6 @@ CAST_ACCESSOR(SeededNumberDictionary)
CAST_ACCESSOR(SeqOneByteString)
CAST_ACCESSOR(SeqString)
CAST_ACCESSOR(SeqTwoByteString)
CAST_ACCESSOR(SharedFunctionInfo)
CAST_ACCESSOR(SlicedString)
CAST_ACCESSOR(SloppyArgumentsElements)
CAST_ACCESSOR(Smi)
......@@ -3063,44 +3060,20 @@ FixedTypedArray<Traits>::cast(const Object* object) {
return reinterpret_cast<FixedTypedArray<Traits>*>(object);
}
#define DEFINE_DEOPT_ELEMENT_ACCESSORS(name, type) \
type* DeoptimizationInputData::name() { \
return type::cast(get(k##name##Index)); \
} \
void DeoptimizationInputData::Set##name(type* value) { \
set(k##name##Index, value); \
}
DEFINE_DEOPT_ELEMENT_ACCESSORS(TranslationByteArray, ByteArray)
DEFINE_DEOPT_ELEMENT_ACCESSORS(InlinedFunctionCount, Smi)
DEFINE_DEOPT_ELEMENT_ACCESSORS(LiteralArray, FixedArray)
DEFINE_DEOPT_ELEMENT_ACCESSORS(OsrAstId, Smi)
DEFINE_DEOPT_ELEMENT_ACCESSORS(OsrPcOffset, Smi)
DEFINE_DEOPT_ELEMENT_ACCESSORS(OptimizationId, Smi)
DEFINE_DEOPT_ELEMENT_ACCESSORS(SharedFunctionInfo, Object)
DEFINE_DEOPT_ELEMENT_ACCESSORS(WeakCellCache, Object)
DEFINE_DEOPT_ELEMENT_ACCESSORS(InliningPositions, PodArray<InliningPosition>)
#undef DEFINE_DEOPT_ELEMENT_ACCESSORS
#define DEFINE_DEOPT_ENTRY_ACCESSORS(name, type) \
type* DeoptimizationInputData::name(int i) { \
return type::cast(get(IndexForEntry(i) + k##name##Offset)); \
} \
void DeoptimizationInputData::Set##name(int i, type* value) { \
set(IndexForEntry(i) + k##name##Offset, value); \
}
DEFINE_DEOPT_ENTRY_ACCESSORS(AstIdRaw, Smi)
DEFINE_DEOPT_ENTRY_ACCESSORS(TranslationIndex, Smi)
DEFINE_DEOPT_ENTRY_ACCESSORS(ArgumentsStackHeight, Smi)
DEFINE_DEOPT_ENTRY_ACCESSORS(Pc, Smi)
#undef DEFINE_DEOPT_ENTRY_ACCESSORS
BailoutId DeoptimizationInputData::AstId(int i) {
return BailoutId(AstIdRaw(i)->value());
}
......@@ -5681,22 +5654,6 @@ ACCESSORS(SourcePositionTableWithFrameCache, source_position_table, ByteArray,
ACCESSORS(SourcePositionTableWithFrameCache, stack_frame_cache,
UnseededNumberDictionary, kStackFrameCacheIndex)
ACCESSORS(SharedFunctionInfo, name, Object, kNameOffset)
ACCESSORS(SharedFunctionInfo, construct_stub, Code, kConstructStubOffset)
ACCESSORS(SharedFunctionInfo, feedback_metadata, FeedbackMetadata,
kFeedbackMetadataOffset)
SMI_ACCESSORS(SharedFunctionInfo, function_literal_id, kFunctionLiteralIdOffset)
#if V8_SFI_HAS_UNIQUE_ID
SMI_ACCESSORS(SharedFunctionInfo, unique_id, kUniqueIdOffset)
#endif
ACCESSORS(SharedFunctionInfo, instance_class_name, Object,
kInstanceClassNameOffset)
ACCESSORS(SharedFunctionInfo, function_data, Object, kFunctionDataOffset)
ACCESSORS(SharedFunctionInfo, script, Object, kScriptOffset)
ACCESSORS(SharedFunctionInfo, debug_info, Object, kDebugInfoOffset)
ACCESSORS(SharedFunctionInfo, function_identifier, Object,
kFunctionIdentifierOffset)
SMI_ACCESSORS(FunctionTemplateInfo, length, kLengthOffset)
BOOL_ACCESSORS(FunctionTemplateInfo, flag, hidden_prototype,
kHiddenPrototypeBit)
......@@ -5711,175 +5668,6 @@ BOOL_ACCESSORS(FunctionTemplateInfo, flag, do_not_cache,
kDoNotCacheBit)
BOOL_ACCESSORS(FunctionTemplateInfo, flag, accept_any_receiver,
kAcceptAnyReceiver)
BOOL_ACCESSORS(SharedFunctionInfo, start_position_and_type, is_named_expression,
kIsNamedExpressionBit)
BOOL_ACCESSORS(SharedFunctionInfo, start_position_and_type, is_toplevel,
kIsTopLevelBit)
#if V8_HOST_ARCH_32_BIT
SMI_ACCESSORS(SharedFunctionInfo, length, kLengthOffset)
SMI_ACCESSORS(SharedFunctionInfo, internal_formal_parameter_count,
kFormalParameterCountOffset)
SMI_ACCESSORS(SharedFunctionInfo, expected_nof_properties,
kExpectedNofPropertiesOffset)
SMI_ACCESSORS(SharedFunctionInfo, start_position_and_type,
kStartPositionAndTypeOffset)
SMI_ACCESSORS(SharedFunctionInfo, end_position, kEndPositionOffset)
SMI_ACCESSORS(SharedFunctionInfo, function_token_position,
kFunctionTokenPositionOffset)
SMI_ACCESSORS(SharedFunctionInfo, compiler_hints,
kCompilerHintsOffset)
SMI_ACCESSORS(SharedFunctionInfo, opt_count_and_bailout_reason,
kOptCountAndBailoutReasonOffset)
SMI_ACCESSORS(SharedFunctionInfo, counters, kCountersOffset)
SMI_ACCESSORS(SharedFunctionInfo, ast_node_count, kAstNodeCountOffset)
SMI_ACCESSORS(SharedFunctionInfo, profiler_ticks, kProfilerTicksOffset)
#else
#if V8_TARGET_LITTLE_ENDIAN
#define PSEUDO_SMI_LO_ALIGN 0
#define PSEUDO_SMI_HI_ALIGN kIntSize
#else
#define PSEUDO_SMI_LO_ALIGN kIntSize
#define PSEUDO_SMI_HI_ALIGN 0
#endif
#define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset) \
STATIC_ASSERT(holder::offset % kPointerSize == PSEUDO_SMI_LO_ALIGN); \
int holder::name() const { \
int value = READ_INT_FIELD(this, offset); \
DCHECK(kHeapObjectTag == 1); \
DCHECK((value & kHeapObjectTag) == 0); \
return value >> 1; \
} \
void holder::set_##name(int value) { \
DCHECK(kHeapObjectTag == 1); \
DCHECK((value & 0xC0000000) == 0xC0000000 || (value & 0xC0000000) == 0x0); \
WRITE_INT_FIELD(this, offset, (value << 1) & ~kHeapObjectTag); \
}
#define PSEUDO_SMI_ACCESSORS_HI(holder, name, offset) \
STATIC_ASSERT(holder::offset % kPointerSize == PSEUDO_SMI_HI_ALIGN); \
INT_ACCESSORS(holder, name, offset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, length, kLengthOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, internal_formal_parameter_count,
kFormalParameterCountOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo,
expected_nof_properties,
kExpectedNofPropertiesOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, end_position, kEndPositionOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo,
start_position_and_type,
kStartPositionAndTypeOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo,
function_token_position,
kFunctionTokenPositionOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo,
compiler_hints,
kCompilerHintsOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo,
opt_count_and_bailout_reason,
kOptCountAndBailoutReasonOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, counters, kCountersOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo,
ast_node_count,
kAstNodeCountOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo,
profiler_ticks,
kProfilerTicksOffset)
#endif
AbstractCode* SharedFunctionInfo::abstract_code() {
if (HasBytecodeArray()) {
return AbstractCode::cast(bytecode_array());
} else {
return AbstractCode::cast(code());
}
}
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, allows_lazy_compilation,
kAllowLazyCompilation)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, uses_arguments,
kUsesArguments)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, has_duplicate_parameters,
kHasDuplicateParameters)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, asm_function, kIsAsmFunction)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, is_declaration,
kIsDeclaration)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, marked_for_tier_up,
kMarkedForTierUp)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints,
has_concurrent_optimization_job, kHasConcurrentOptimizationJob)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, needs_home_object,
kNeedsHomeObject)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, native, kNative)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, force_inline, kForceInline)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, must_use_ignition_turbo,
kMustUseIgnitionTurbo)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, is_asm_wasm_broken,
kIsAsmWasmBroken)
BOOL_GETTER(SharedFunctionInfo, compiler_hints, optimization_disabled,
kOptimizationDisabled)
void SharedFunctionInfo::set_optimization_disabled(bool disable) {
set_compiler_hints(BooleanBit::set(compiler_hints(),
kOptimizationDisabled,
disable));
}
LanguageMode SharedFunctionInfo::language_mode() {
STATIC_ASSERT(LANGUAGE_END == 2);
return construct_language_mode(
BooleanBit::get(compiler_hints(), kStrictModeFunction));
}
void SharedFunctionInfo::set_language_mode(LanguageMode language_mode) {
STATIC_ASSERT(LANGUAGE_END == 2);
// We only allow language mode transitions that set the same language mode
// again or go up in the chain:
DCHECK(is_sloppy(this->language_mode()) || is_strict(language_mode));
int hints = compiler_hints();
hints = BooleanBit::set(hints, kStrictModeFunction, is_strict(language_mode));
set_compiler_hints(hints);
}
FunctionKind SharedFunctionInfo::kind() const {
return FunctionKindBits::decode(compiler_hints());
}
void SharedFunctionInfo::set_kind(FunctionKind kind) {
DCHECK(IsValidFunctionKind(kind));
int hints = compiler_hints();
hints = FunctionKindBits::update(hints, kind);
set_compiler_hints(hints);
}
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints,
name_should_print_as_anonymous, kNameShouldPrintAsAnonymous)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, is_anonymous_expression,
kIsAnonymousExpression)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, deserialized, kDeserialized)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, has_no_side_effect,
kHasNoSideEffect)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, computed_has_no_side_effect,
kComputedHasNoSideEffect)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, debug_is_blackboxed,
kDebugIsBlackboxed)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, computed_debug_is_blackboxed,
kComputedDebugIsBlackboxed)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, has_reported_binary_coverage,
kHasReportedBinaryCoverage)
bool Script::HasValidSource() {
Object* src = this->source();
......@@ -5894,284 +5682,6 @@ bool Script::HasValidSource() {
return true;
}
void SharedFunctionInfo::DontAdaptArguments() {
DCHECK(code()->kind() == Code::BUILTIN || code()->kind() == Code::STUB);
set_internal_formal_parameter_count(kDontAdaptArgumentsSentinel);
}
int SharedFunctionInfo::start_position() const {
return start_position_and_type() >> kStartPositionShift;
}
void SharedFunctionInfo::set_start_position(int start_position) {
set_start_position_and_type((start_position << kStartPositionShift)
| (start_position_and_type() & ~kStartPositionMask));
}
Code* SharedFunctionInfo::code() const {
return Code::cast(READ_FIELD(this, kCodeOffset));
}
void SharedFunctionInfo::set_code(Code* value, WriteBarrierMode mode) {
DCHECK(value->kind() != Code::OPTIMIZED_FUNCTION);
// If the SharedFunctionInfo has bytecode we should never mark it for lazy
// compile, since the bytecode is never flushed.
DCHECK(value != GetIsolate()->builtins()->builtin(Builtins::kCompileLazy) ||
!HasBytecodeArray());
WRITE_FIELD(this, kCodeOffset, value);
CONDITIONAL_WRITE_BARRIER(value->GetHeap(), this, kCodeOffset, value, mode);
}
void SharedFunctionInfo::ReplaceCode(Code* value) {
#ifdef DEBUG
Code::VerifyRecompiledCode(code(), value);
#endif // DEBUG
set_code(value);
}
bool SharedFunctionInfo::IsInterpreted() const {
return code()->is_interpreter_trampoline_builtin();
}
bool SharedFunctionInfo::HasBaselineCode() const {
return code()->kind() == Code::FUNCTION;
}
ScopeInfo* SharedFunctionInfo::scope_info() const {
return reinterpret_cast<ScopeInfo*>(READ_FIELD(this, kScopeInfoOffset));
}
void SharedFunctionInfo::set_scope_info(ScopeInfo* value,
WriteBarrierMode mode) {
WRITE_FIELD(this, kScopeInfoOffset, reinterpret_cast<Object*>(value));
CONDITIONAL_WRITE_BARRIER(GetHeap(),
this,
kScopeInfoOffset,
reinterpret_cast<Object*>(value),
mode);
}
ACCESSORS(SharedFunctionInfo, outer_scope_info, HeapObject,
kOuterScopeInfoOffset)
bool SharedFunctionInfo::is_compiled() const {
Builtins* builtins = GetIsolate()->builtins();
DCHECK(code() != builtins->builtin(Builtins::kCompileOptimizedConcurrent));
DCHECK(code() != builtins->builtin(Builtins::kCompileOptimized));
return code() != builtins->builtin(Builtins::kCompileLazy);
}
int SharedFunctionInfo::GetLength() const {
DCHECK(is_compiled());
DCHECK(HasLength());
return length();
}
bool SharedFunctionInfo::HasLength() const {
DCHECK_IMPLIES(length() < 0, length() == kInvalidLength);
return length() != kInvalidLength;
}
bool SharedFunctionInfo::has_simple_parameters() {
return scope_info()->HasSimpleParameters();
}
bool SharedFunctionInfo::HasDebugInfo() const {
bool has_debug_info = !debug_info()->IsSmi();
DCHECK_EQ(debug_info()->IsStruct(), has_debug_info);
DCHECK(!has_debug_info || HasDebugCode());
return has_debug_info;
}
bool SharedFunctionInfo::HasDebugCode() const {
if (HasBaselineCode()) return code()->has_debug_break_slots();
return HasBytecodeArray();
}
bool SharedFunctionInfo::IsApiFunction() {
return function_data()->IsFunctionTemplateInfo();
}
FunctionTemplateInfo* SharedFunctionInfo::get_api_func_data() {
DCHECK(IsApiFunction());
return FunctionTemplateInfo::cast(function_data());
}
void SharedFunctionInfo::set_api_func_data(FunctionTemplateInfo* data) {
DCHECK(function_data()->IsUndefined(GetIsolate()));
set_function_data(data);
}
bool SharedFunctionInfo::HasBytecodeArray() const {
return function_data()->IsBytecodeArray();
}
BytecodeArray* SharedFunctionInfo::bytecode_array() const {
DCHECK(HasBytecodeArray());
return BytecodeArray::cast(function_data());
}
void SharedFunctionInfo::set_bytecode_array(BytecodeArray* bytecode) {
DCHECK(function_data()->IsUndefined(GetIsolate()));
set_function_data(bytecode);
}
void SharedFunctionInfo::ClearBytecodeArray() {
DCHECK(function_data()->IsUndefined(GetIsolate()) || HasBytecodeArray());
set_function_data(GetHeap()->undefined_value());
}
bool SharedFunctionInfo::HasAsmWasmData() const {
return function_data()->IsFixedArray();
}
FixedArray* SharedFunctionInfo::asm_wasm_data() const {
DCHECK(HasAsmWasmData());
return FixedArray::cast(function_data());
}
void SharedFunctionInfo::set_asm_wasm_data(FixedArray* data) {
DCHECK(function_data()->IsUndefined(GetIsolate()) || HasAsmWasmData());
set_function_data(data);
}
void SharedFunctionInfo::ClearAsmWasmData() {
DCHECK(function_data()->IsUndefined(GetIsolate()) || HasAsmWasmData());
set_function_data(GetHeap()->undefined_value());
}
bool SharedFunctionInfo::HasBuiltinFunctionId() {
return function_identifier()->IsSmi();
}
BuiltinFunctionId SharedFunctionInfo::builtin_function_id() {
DCHECK(HasBuiltinFunctionId());
return static_cast<BuiltinFunctionId>(
Smi::cast(function_identifier())->value());
}
void SharedFunctionInfo::set_builtin_function_id(BuiltinFunctionId id) {
set_function_identifier(Smi::FromInt(id));
}
bool SharedFunctionInfo::HasInferredName() {
return function_identifier()->IsString();
}
String* SharedFunctionInfo::inferred_name() {
if (HasInferredName()) {
return String::cast(function_identifier());
}
Isolate* isolate = GetIsolate();
DCHECK(function_identifier()->IsUndefined(isolate) || HasBuiltinFunctionId());
return isolate->heap()->empty_string();
}
void SharedFunctionInfo::set_inferred_name(String* inferred_name) {
DCHECK(function_identifier()->IsUndefined(GetIsolate()) || HasInferredName());
set_function_identifier(inferred_name);
}
int SharedFunctionInfo::ic_age() {
return ICAgeBits::decode(counters());
}
void SharedFunctionInfo::set_ic_age(int ic_age) {
set_counters(ICAgeBits::update(counters(), ic_age));
}
int SharedFunctionInfo::deopt_count() {
return DeoptCountBits::decode(counters());
}
void SharedFunctionInfo::set_deopt_count(int deopt_count) {
set_counters(DeoptCountBits::update(counters(), deopt_count));
}
void SharedFunctionInfo::increment_deopt_count() {
int value = counters();
int deopt_count = DeoptCountBits::decode(value);
// Saturate the deopt count when incrementing, rather than overflowing.
if (deopt_count < DeoptCountBits::kMax) {
set_counters(DeoptCountBits::update(value, deopt_count + 1));
}
}
int SharedFunctionInfo::opt_reenable_tries() {
return OptReenableTriesBits::decode(counters());
}
void SharedFunctionInfo::set_opt_reenable_tries(int tries) {
set_counters(OptReenableTriesBits::update(counters(), tries));
}
int SharedFunctionInfo::opt_count() {
return OptCountBits::decode(opt_count_and_bailout_reason());
}
void SharedFunctionInfo::set_opt_count(int opt_count) {
set_opt_count_and_bailout_reason(
OptCountBits::update(opt_count_and_bailout_reason(), opt_count));
}
BailoutReason SharedFunctionInfo::disable_optimization_reason() {
return static_cast<BailoutReason>(
DisabledOptimizationReasonBits::decode(opt_count_and_bailout_reason()));
}
bool SharedFunctionInfo::has_deoptimization_support() {
Code* code = this->code();
return code->kind() == Code::FUNCTION && code->has_deoptimization_support();
}
void SharedFunctionInfo::TryReenableOptimization() {
int tries = opt_reenable_tries();
set_opt_reenable_tries((tries + 1) & OptReenableTriesBits::kMax);
// We reenable optimization whenever the number of tries is a large
// enough power of 2.
if (tries >= 16 && (((tries - 1) & tries) == 0)) {
set_optimization_disabled(false);
set_deopt_count(0);
}
}
void SharedFunctionInfo::set_disable_optimization_reason(BailoutReason reason) {
set_opt_count_and_bailout_reason(DisabledOptimizationReasonBits::update(
opt_count_and_bailout_reason(), reason));
}
bool SharedFunctionInfo::IsUserJavaScript() {
Object* script_obj = script();
if (script_obj->IsUndefined(GetIsolate())) return false;
Script* script = Script::cast(script_obj);
return script->IsUserJavaScript();
}
bool SharedFunctionInfo::IsSubjectToDebugging() {
return IsUserJavaScript() && !HasAsmWasmData();
}
FeedbackVector* JSFunction::feedback_vector() const {
DCHECK(feedback_vector_cell()->value()->IsFeedbackVector());
return FeedbackVector::cast(feedback_vector_cell()->value());
......
src/objects.h
View file @ b90c98fc
......@@ -5030,716 +5030,6 @@ enum BuiltinFunctionId {
kStringIteratorNext,
};
// Result of searching in an optimized code map of a SharedFunctionInfo. Note
// that both {code} and {vector} can be NULL to pass search result status.
struct CodeAndVector {
Code* code; // Cached optimized code.
FeedbackVector* vector; // Cached feedback vector.
};
// SharedFunctionInfo describes the JSFunction information that can be
// shared by multiple instances of the function.
class SharedFunctionInfo: public HeapObject {
public:
// [name]: Function name.
DECL_ACCESSORS(name, Object)
// [code]: Function code.
DECL_ACCESSORS(code, Code)
// Get the abstract code associated with the function, which will either be
// a Code object or a BytecodeArray.
inline AbstractCode* abstract_code();
// Tells whether or not this shared function info is interpreted.
//
// Note: function->IsInterpreted() does not necessarily return the same value
// as function->shared()->IsInterpreted() because the closure might have been
// optimized.
inline bool IsInterpreted() const;
inline void ReplaceCode(Code* code);
inline bool HasBaselineCode() const;
// Set up the link between shared function info and the script. The shared
// function info is added to the list on the script.
V8_EXPORT_PRIVATE static void SetScript(Handle<SharedFunctionInfo> shared,
Handle<Object> script_object);
// Layout description of the optimized code map.
static const int kEntriesStart = 0;
static const int kContextOffset = 0;
static const int kCachedCodeOffset = 1;
static const int kEntryLength = 2;
static const int kInitialLength = kEntriesStart + kEntryLength;
static const int kNotFound = -1;
static const int kInvalidLength = -1;
// Helpers for assembly code that does a backwards walk of the optimized code
// map.
static const int kOffsetToPreviousContext =
FixedArray::kHeaderSize + kPointerSize * (kContextOffset - kEntryLength);
static const int kOffsetToPreviousCachedCode =
FixedArray::kHeaderSize +
kPointerSize * (kCachedCodeOffset - kEntryLength);
// [scope_info]: Scope info.
DECL_ACCESSORS(scope_info, ScopeInfo)
// The outer scope info for the purpose of parsing this function, or the hole
// value if it isn't yet known.
DECL_ACCESSORS(outer_scope_info, HeapObject)
// [construct stub]: Code stub for constructing instances of this function.
DECL_ACCESSORS(construct_stub, Code)
// Sets the given code as the construct stub, and marks builtin code objects
// as a construct stub.
void SetConstructStub(Code* code);
// Returns if this function has been compiled to native code yet.
inline bool is_compiled() const;
// [length]: The function length - usually the number of declared parameters.
// Use up to 2^30 parameters. The value is only reliable when the function has
// been compiled.
inline int GetLength() const;
inline bool HasLength() const;
inline void set_length(int value);
// [internal formal parameter count]: The declared number of parameters.
// For subclass constructors, also includes new.target.
// The size of function's frame is internal_formal_parameter_count + 1.
inline int internal_formal_parameter_count() const;
inline void set_internal_formal_parameter_count(int value);
// Set the formal parameter count so the function code will be
// called without using argument adaptor frames.
inline void DontAdaptArguments();
// [expected_nof_properties]: Expected number of properties for the
// function. The value is only reliable when the function has been compiled.
inline int expected_nof_properties() const;
inline void set_expected_nof_properties(int value);
// [feedback_metadata] - describes ast node feedback from full-codegen and
// (increasingly) from crankshafted code where sufficient feedback isn't
// available.
DECL_ACCESSORS(feedback_metadata, FeedbackMetadata)
// [function_literal_id] - uniquely identifies the FunctionLiteral this
// SharedFunctionInfo represents within its script, or -1 if this
// SharedFunctionInfo object doesn't correspond to a parsed FunctionLiteral.
inline int function_literal_id() const;
inline void set_function_literal_id(int value);
#if V8_SFI_HAS_UNIQUE_ID
// [unique_id] - For --trace-maps purposes, an identifier that's persistent
// even if the GC moves this SharedFunctionInfo.
inline int unique_id() const;
inline void set_unique_id(int value);
#endif
// [instance class name]: class name for instances.
DECL_ACCESSORS(instance_class_name, Object)
// [function data]: This field holds some additional data for function.
// Currently it has one of:
// - a FunctionTemplateInfo to make benefit the API [IsApiFunction()].
// - a BytecodeArray for the interpreter [HasBytecodeArray()].
// - a FixedArray with Asm->Wasm conversion [HasAsmWasmData()].
DECL_ACCESSORS(function_data, Object)
inline bool IsApiFunction();
inline FunctionTemplateInfo* get_api_func_data();
inline void set_api_func_data(FunctionTemplateInfo* data);
inline bool HasBytecodeArray() const;
inline BytecodeArray* bytecode_array() const;
inline void set_bytecode_array(BytecodeArray* bytecode);
inline void ClearBytecodeArray();
inline bool HasAsmWasmData() const;
inline FixedArray* asm_wasm_data() const;
inline void set_asm_wasm_data(FixedArray* data);
inline void ClearAsmWasmData();
// [function identifier]: This field holds an additional identifier for the
// function.
// - a Smi identifying a builtin function [HasBuiltinFunctionId()].
// - a String identifying the function's inferred name [HasInferredName()].
// The inferred_name is inferred from variable or property
// assignment of this function. It is used to facilitate debugging and
// profiling of JavaScript code written in OO style, where almost
// all functions are anonymous but are assigned to object
// properties.
DECL_ACCESSORS(function_identifier, Object)
inline bool HasBuiltinFunctionId();
inline BuiltinFunctionId builtin_function_id();
inline void set_builtin_function_id(BuiltinFunctionId id);
inline bool HasInferredName();
inline String* inferred_name();
inline void set_inferred_name(String* inferred_name);
// [script]: Script from which the function originates.
DECL_ACCESSORS(script, Object)
// [start_position_and_type]: Field used to store both the source code
// position, whether or not the function is a function expression,
// and whether or not the function is a toplevel function. The two
// least significants bit indicates whether the function is an
// expression and the rest contains the source code position.
inline int start_position_and_type() const;
inline void set_start_position_and_type(int value);
// The function is subject to debugging if a debug info is attached.
inline bool HasDebugInfo() const;
DebugInfo* GetDebugInfo() const;
// A function has debug code if the compiled code has debug break slots.
inline bool HasDebugCode() const;
// [debug info]: Debug information.
DECL_ACCESSORS(debug_info, Object)
// Bit field containing various information collected for debugging.
// This field is either stored on the kDebugInfo slot or inside the
// debug info struct.
int debugger_hints() const;
void set_debugger_hints(int value);
// Indicates that the function was created by the Function function.
// Though it's anonymous, toString should treat it as if it had the name
// "anonymous". We don't set the name itself so that the system does not
// see a binding for it.
DECL_BOOLEAN_ACCESSORS(name_should_print_as_anonymous)
// Indicates that the function is either an anonymous expression
// or an arrow function (the name field can be set through the API,
// which does not change this flag).
DECL_BOOLEAN_ACCESSORS(is_anonymous_expression)
// Indicates that the the shared function info is deserialized from cache.
DECL_BOOLEAN_ACCESSORS(deserialized)
// Indicates that the function cannot cause side-effects.
DECL_BOOLEAN_ACCESSORS(has_no_side_effect)
// Indicates that |has_no_side_effect| has been computed and set.
DECL_BOOLEAN_ACCESSORS(computed_has_no_side_effect)
// Indicates that the function should be skipped during stepping.
DECL_BOOLEAN_ACCESSORS(debug_is_blackboxed)
// Indicates that |debug_is_blackboxed| has been computed and set.
DECL_BOOLEAN_ACCESSORS(computed_debug_is_blackboxed)
// Indicates that the function has been reported for binary code coverage.
DECL_BOOLEAN_ACCESSORS(has_reported_binary_coverage)
// The function's name if it is non-empty, otherwise the inferred name.
String* DebugName();
// The function cannot cause any side effects.
bool HasNoSideEffect();
// Used for flags such as --hydrogen-filter.
bool PassesFilter(const char* raw_filter);
// Position of the 'function' token in the script source.
inline int function_token_position() const;
inline void set_function_token_position(int function_token_position);
// Position of this function in the script source.
inline int start_position() const;
inline void set_start_position(int start_position);
// End position of this function in the script source.
inline int end_position() const;
inline void set_end_position(int end_position);
// Is this function a named function expression in the source code.
DECL_BOOLEAN_ACCESSORS(is_named_expression)
// Is this function a top-level function (scripts, evals).
DECL_BOOLEAN_ACCESSORS(is_toplevel)
// Bit field containing various information collected by the compiler to
// drive optimization.
inline int compiler_hints() const;
inline void set_compiler_hints(int value);
inline int ast_node_count() const;
inline void set_ast_node_count(int count);
inline int profiler_ticks() const;
inline void set_profiler_ticks(int ticks);
// Inline cache age is used to infer whether the function survived a context
// disposal or not. In the former case we reset the opt_count.
inline int ic_age();
inline void set_ic_age(int age);
// Indicates if this function can be lazy compiled.
DECL_BOOLEAN_ACCESSORS(allows_lazy_compilation)
// Indicates whether optimizations have been disabled for this
// shared function info. If a function is repeatedly optimized or if
// we cannot optimize the function we disable optimization to avoid
// spending time attempting to optimize it again.
DECL_BOOLEAN_ACCESSORS(optimization_disabled)
// Indicates the language mode.
inline LanguageMode language_mode();
inline void set_language_mode(LanguageMode language_mode);
// False if the function definitely does not allocate an arguments object.
DECL_BOOLEAN_ACCESSORS(uses_arguments)
// Indicates that this function uses a super property (or an eval that may
// use a super property).
// This is needed to set up the [[HomeObject]] on the function instance.
DECL_BOOLEAN_ACCESSORS(needs_home_object)
// True if the function has any duplicated parameter names.
DECL_BOOLEAN_ACCESSORS(has_duplicate_parameters)
// Indicates whether the function is a native function.
// These needs special treatment in .call and .apply since
// null passed as the receiver should not be translated to the
// global object.
DECL_BOOLEAN_ACCESSORS(native)
// Indicate that this function should always be inlined in optimized code.
DECL_BOOLEAN_ACCESSORS(force_inline)
// Indicates that code for this function must be compiled through the
// Ignition / TurboFan pipeline, and is unsupported by
// FullCodegen / Crankshaft.
DECL_BOOLEAN_ACCESSORS(must_use_ignition_turbo)
// Indicates that this function is an asm function.
DECL_BOOLEAN_ACCESSORS(asm_function)
// Whether this function was created from a FunctionDeclaration.
DECL_BOOLEAN_ACCESSORS(is_declaration)
// Whether this function was marked to be tiered up.
DECL_BOOLEAN_ACCESSORS(marked_for_tier_up)
// Whether this function has a concurrent compilation job running.
DECL_BOOLEAN_ACCESSORS(has_concurrent_optimization_job)
// Indicates that asm->wasm conversion failed and should not be re-attempted.
DECL_BOOLEAN_ACCESSORS(is_asm_wasm_broken)
inline FunctionKind kind() const;
inline void set_kind(FunctionKind kind);
// Indicates whether or not the code in the shared function support
// deoptimization.
inline bool has_deoptimization_support();
// Enable deoptimization support through recompiled code.
void EnableDeoptimizationSupport(Code* recompiled);
// Disable (further) attempted optimization of all functions sharing this
// shared function info.
void DisableOptimization(BailoutReason reason);
inline BailoutReason disable_optimization_reason();
// Lookup the bailout ID and DCHECK that it exists in the non-optimized
// code, returns whether it asserted (i.e., always true if assertions are
// disabled).
bool VerifyBailoutId(BailoutId id);
// [source code]: Source code for the function.
bool HasSourceCode() const;
Handle<Object> GetSourceCode();
Handle<Object> GetSourceCodeHarmony();
// Number of times the function was optimized.
inline int opt_count();
inline void set_opt_count(int opt_count);
// Number of times the function was deoptimized.
inline void set_deopt_count(int value);
inline int deopt_count();
inline void increment_deopt_count();
// Number of time we tried to re-enable optimization after it
// was disabled due to high number of deoptimizations.
inline void set_opt_reenable_tries(int value);
inline int opt_reenable_tries();
inline void TryReenableOptimization();
// Stores deopt_count, opt_reenable_tries and ic_age as bit-fields.
inline void set_counters(int value);
inline int counters() const;
// Stores opt_count and bailout_reason as bit-fields.
inline void set_opt_count_and_bailout_reason(int value);
inline int opt_count_and_bailout_reason() const;
inline void set_disable_optimization_reason(BailoutReason reason);
// Tells whether this function should be subject to debugging.
inline bool IsSubjectToDebugging();
// Whether this function is defined in user-provided JavaScript code.
inline bool IsUserJavaScript();
// Check whether or not this function is inlineable.
bool IsInlineable();
// Source size of this function.
int SourceSize();
// Returns `false` if formal parameters include rest parameters, optional
// parameters, or destructuring parameters.
// TODO(caitp): make this a flag set during parsing
inline bool has_simple_parameters();
// Initialize a SharedFunctionInfo from a parsed function literal.
static void InitFromFunctionLiteral(Handle<SharedFunctionInfo> shared_info,
FunctionLiteral* lit);
// Sets the expected number of properties based on estimate from parser.
void SetExpectedNofPropertiesFromEstimate(FunctionLiteral* literal);
// Dispatched behavior.
DECLARE_PRINTER(SharedFunctionInfo)
DECLARE_VERIFIER(SharedFunctionInfo)
void ResetForNewContext(int new_ic_age);
// Iterate over all shared function infos in a given script.
class ScriptIterator {
public:
explicit ScriptIterator(Handle<Script> script);
ScriptIterator(Isolate* isolate, Handle<FixedArray> shared_function_infos);
SharedFunctionInfo* Next();
// Reset the iterator to run on |script|.
void Reset(Handle<Script> script);
private:
Isolate* isolate_;
Handle<FixedArray> shared_function_infos_;
int index_;
DISALLOW_COPY_AND_ASSIGN(ScriptIterator);
};
// Iterate over all shared function infos on the heap.
class GlobalIterator {
public:
explicit GlobalIterator(Isolate* isolate);
SharedFunctionInfo* Next();
private:
Script::Iterator script_iterator_;
WeakFixedArray::Iterator noscript_sfi_iterator_;
SharedFunctionInfo::ScriptIterator sfi_iterator_;
DisallowHeapAllocation no_gc_;
DISALLOW_COPY_AND_ASSIGN(GlobalIterator);
};
DECLARE_CAST(SharedFunctionInfo)
// Constants.
static const int kDontAdaptArgumentsSentinel = -1;
// Layout description.
// Pointer fields.
static const int kCodeOffset = HeapObject::kHeaderSize;
static const int kNameOffset = kCodeOffset + kPointerSize;
static const int kScopeInfoOffset = kNameOffset + kPointerSize;
static const int kOuterScopeInfoOffset = kScopeInfoOffset + kPointerSize;
static const int kConstructStubOffset = kOuterScopeInfoOffset + kPointerSize;
static const int kInstanceClassNameOffset =
kConstructStubOffset + kPointerSize;
static const int kFunctionDataOffset =
kInstanceClassNameOffset + kPointerSize;
static const int kScriptOffset = kFunctionDataOffset + kPointerSize;
static const int kDebugInfoOffset = kScriptOffset + kPointerSize;
static const int kFunctionIdentifierOffset = kDebugInfoOffset + kPointerSize;
static const int kFeedbackMetadataOffset =
kFunctionIdentifierOffset + kPointerSize;
static const int kFunctionLiteralIdOffset =
kFeedbackMetadataOffset + kPointerSize;
#if V8_SFI_HAS_UNIQUE_ID
static const int kUniqueIdOffset = kFunctionLiteralIdOffset + kPointerSize;
static const int kLastPointerFieldOffset = kUniqueIdOffset;
#else
// Just to not break the postmortrem support with conditional offsets
static const int kUniqueIdOffset = kFunctionLiteralIdOffset;
static const int kLastPointerFieldOffset = kFunctionLiteralIdOffset;
#endif
#if V8_HOST_ARCH_32_BIT
// Smi fields.
static const int kLengthOffset = kLastPointerFieldOffset + kPointerSize;
static const int kFormalParameterCountOffset = kLengthOffset + kPointerSize;
static const int kExpectedNofPropertiesOffset =
kFormalParameterCountOffset + kPointerSize;
static const int kNumLiteralsOffset =
kExpectedNofPropertiesOffset + kPointerSize;
static const int kStartPositionAndTypeOffset =
kNumLiteralsOffset + kPointerSize;
static const int kEndPositionOffset =
kStartPositionAndTypeOffset + kPointerSize;
static const int kFunctionTokenPositionOffset =
kEndPositionOffset + kPointerSize;
static const int kCompilerHintsOffset =
kFunctionTokenPositionOffset + kPointerSize;
static const int kOptCountAndBailoutReasonOffset =
kCompilerHintsOffset + kPointerSize;
static const int kCountersOffset =
kOptCountAndBailoutReasonOffset + kPointerSize;
static const int kAstNodeCountOffset =
kCountersOffset + kPointerSize;
static const int kProfilerTicksOffset =
kAstNodeCountOffset + kPointerSize;
// Total size.
static const int kSize = kProfilerTicksOffset + kPointerSize;
#else
// The only reason to use smi fields instead of int fields is to allow
// iteration without maps decoding during garbage collections.
// To avoid wasting space on 64-bit architectures we use the following trick:
// we group integer fields into pairs
// The least significant integer in each pair is shifted left by 1. By doing
// this we guarantee that LSB of each kPointerSize aligned word is not set and
// thus this word cannot be treated as pointer to HeapObject during old space
// traversal.
#if V8_TARGET_LITTLE_ENDIAN
static const int kLengthOffset = kLastPointerFieldOffset + kPointerSize;
static const int kFormalParameterCountOffset =
kLengthOffset + kIntSize;
static const int kExpectedNofPropertiesOffset =
kFormalParameterCountOffset + kIntSize;
static const int kNumLiteralsOffset =
kExpectedNofPropertiesOffset + kIntSize;
static const int kEndPositionOffset =
kNumLiteralsOffset + kIntSize;
static const int kStartPositionAndTypeOffset =
kEndPositionOffset + kIntSize;
static const int kFunctionTokenPositionOffset =
kStartPositionAndTypeOffset + kIntSize;
static const int kCompilerHintsOffset =
kFunctionTokenPositionOffset + kIntSize;
static const int kOptCountAndBailoutReasonOffset =
kCompilerHintsOffset + kIntSize;
static const int kCountersOffset =
kOptCountAndBailoutReasonOffset + kIntSize;
static const int kAstNodeCountOffset =
kCountersOffset + kIntSize;
static const int kProfilerTicksOffset =
kAstNodeCountOffset + kIntSize;
// Total size.
static const int kSize = kProfilerTicksOffset + kIntSize;
#elif V8_TARGET_BIG_ENDIAN
static const int kFormalParameterCountOffset =
kLastPointerFieldOffset + kPointerSize;
static const int kLengthOffset = kFormalParameterCountOffset + kIntSize;
static const int kNumLiteralsOffset = kLengthOffset + kIntSize;
static const int kExpectedNofPropertiesOffset = kNumLiteralsOffset + kIntSize;
static const int kStartPositionAndTypeOffset =
kExpectedNofPropertiesOffset + kIntSize;
static const int kEndPositionOffset = kStartPositionAndTypeOffset + kIntSize;
static const int kCompilerHintsOffset = kEndPositionOffset + kIntSize;
static const int kFunctionTokenPositionOffset =
kCompilerHintsOffset + kIntSize;
static const int kCountersOffset = kFunctionTokenPositionOffset + kIntSize;
static const int kOptCountAndBailoutReasonOffset = kCountersOffset + kIntSize;
static const int kProfilerTicksOffset =
kOptCountAndBailoutReasonOffset + kIntSize;
static const int kAstNodeCountOffset = kProfilerTicksOffset + kIntSize;
// Total size.
static const int kSize = kAstNodeCountOffset + kIntSize;
#else
#error Unknown byte ordering
#endif // Big endian
#endif // 64-bit
static const int kAlignedSize = POINTER_SIZE_ALIGN(kSize);
typedef FixedBodyDescriptor<kCodeOffset,
kLastPointerFieldOffset + kPointerSize, kSize>
BodyDescriptor;
typedef FixedBodyDescriptor<kNameOffset,
kLastPointerFieldOffset + kPointerSize, kSize>
BodyDescriptorWeakCode;
// Bit positions in start_position_and_type.
// The source code start position is in the 30 most significant bits of
// the start_position_and_type field.
static const int kIsNamedExpressionBit = 0;
static const int kIsTopLevelBit = 1;
static const int kStartPositionShift = 2;
static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1);
// Bit positions in compiler_hints.
enum CompilerHints {
// byte 0
kAllowLazyCompilation,
kMarkedForTierUp,
kOptimizationDisabled,
kHasDuplicateParameters,
kNative,
kStrictModeFunction,
kUsesArguments,
kNeedsHomeObject,
// byte 1
kForceInline,
kIsAsmFunction,
kMustUseIgnitionTurbo,
kIsDeclaration,
kIsAsmWasmBroken,
kHasConcurrentOptimizationJob,
kUnused1, // Unused fields.
kUnused2,
// byte 2
kFunctionKind,
// rest of byte 2 and first two bits of byte 3 are used by FunctionKind
// byte 3
kCompilerHintsCount = kFunctionKind + 10, // Pseudo entry
};
// Bit positions in debugger_hints.
enum DebuggerHints {
kIsAnonymousExpression,
kNameShouldPrintAsAnonymous,
kDeserialized,
kHasNoSideEffect,
kComputedHasNoSideEffect,
kDebugIsBlackboxed,
kComputedDebugIsBlackboxed,
kHasReportedBinaryCoverage
};
// kFunctionKind has to be byte-aligned
STATIC_ASSERT((kFunctionKind % kBitsPerByte) == 0);
class FunctionKindBits : public BitField<FunctionKind, kFunctionKind, 10> {};
class DeoptCountBits : public BitField<int, 0, 4> {};
class OptReenableTriesBits : public BitField<int, 4, 18> {};
class ICAgeBits : public BitField<int, 22, 8> {};
class OptCountBits : public BitField<int, 0, 22> {};
class DisabledOptimizationReasonBits : public BitField<int, 22, 8> {};
private:
FRIEND_TEST(PreParserTest, LazyFunctionLength);
inline int length() const;
#if V8_HOST_ARCH_32_BIT
// On 32 bit platforms, compiler hints is a smi.
static const int kCompilerHintsSmiTagSize = kSmiTagSize;
static const int kCompilerHintsSize = kPointerSize;
#else
// On 64 bit platforms, compiler hints is not a smi, see comment above.
static const int kCompilerHintsSmiTagSize = 0;
static const int kCompilerHintsSize = kIntSize;
#endif
STATIC_ASSERT(SharedFunctionInfo::kCompilerHintsCount +
SharedFunctionInfo::kCompilerHintsSmiTagSize <=
SharedFunctionInfo::kCompilerHintsSize * kBitsPerByte);
public:
// Constants for optimizing codegen for strict mode function and
// native tests when using integer-width instructions.
static const int kStrictModeBit =
kStrictModeFunction + kCompilerHintsSmiTagSize;
static const int kNativeBit = kNative + kCompilerHintsSmiTagSize;
static const int kHasDuplicateParametersBit =
kHasDuplicateParameters + kCompilerHintsSmiTagSize;
static const int kFunctionKindShift =
kFunctionKind + kCompilerHintsSmiTagSize;
static const int kAllFunctionKindBitsMask = FunctionKindBits::kMask
<< kCompilerHintsSmiTagSize;
static const int kMarkedForTierUpBit =
kMarkedForTierUp + kCompilerHintsSmiTagSize;
// Constants for optimizing codegen for strict mode function and
// native tests.
// Allows to use byte-width instructions.
static const int kStrictModeBitWithinByte = kStrictModeBit % kBitsPerByte;
static const int kNativeBitWithinByte = kNativeBit % kBitsPerByte;
static const int kHasDuplicateParametersBitWithinByte =
kHasDuplicateParametersBit % kBitsPerByte;
static const int kClassConstructorBitsWithinByte =
FunctionKind::kClassConstructor << kCompilerHintsSmiTagSize;
STATIC_ASSERT(kClassConstructorBitsWithinByte < (1 << kBitsPerByte));
static const int kDerivedConstructorBitsWithinByte =
FunctionKind::kDerivedConstructor << kCompilerHintsSmiTagSize;
STATIC_ASSERT(kDerivedConstructorBitsWithinByte < (1 << kBitsPerByte));
static const int kMarkedForTierUpBitWithinByte =
kMarkedForTierUpBit % kBitsPerByte;
#if defined(V8_TARGET_LITTLE_ENDIAN)
#define BYTE_OFFSET(compiler_hint) \
kCompilerHintsOffset + \
(compiler_hint + kCompilerHintsSmiTagSize) / kBitsPerByte
#elif defined(V8_TARGET_BIG_ENDIAN)
#define BYTE_OFFSET(compiler_hint) \
kCompilerHintsOffset + (kCompilerHintsSize - 1) - \
((compiler_hint + kCompilerHintsSmiTagSize) / kBitsPerByte)
#else
#error Unknown byte ordering
#endif
static const int kStrictModeByteOffset = BYTE_OFFSET(kStrictModeFunction);
static const int kNativeByteOffset = BYTE_OFFSET(kNative);
static const int kFunctionKindByteOffset = BYTE_OFFSET(kFunctionKind);
static const int kHasDuplicateParametersByteOffset =
BYTE_OFFSET(kHasDuplicateParameters);
static const int kMarkedForTierUpByteOffset = BYTE_OFFSET(kMarkedForTierUp);
#undef BYTE_OFFSET
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(SharedFunctionInfo);
};
// Printing support.
struct SourceCodeOf {
explicit SourceCodeOf(SharedFunctionInfo* v, int max = -1)
: value(v), max_length(max) {}
const SharedFunctionInfo* value;
int max_length;
};
std::ostream& operator<<(std::ostream& os, const SourceCodeOf& v);
class JSGeneratorObject: public JSObject {
public:
// [function]: The function corresponding to this generator object.
......
src/objects/object-macros-undef.h
View file @ b90c98fc
......@@ -57,3 +57,5 @@
#undef WRITE_BYTE_FIELD
#undef NOBARRIER_WRITE_BYTE_FIELD
#undef DECLARE_VERIFIER
#undef DEFINE_DEOPT_ELEMENT_ACCESSORS
#undef DEFINE_DEOPT_ENTRY_ACCESSORS
src/objects/object-macros.h
View file @ b90c98fc
......@@ -246,3 +246,19 @@
#else
#define DECLARE_VERIFIER(Name)
#endif
#define DEFINE_DEOPT_ELEMENT_ACCESSORS(name, type) \
type* DeoptimizationInputData::name() { \
return type::cast(get(k##name##Index)); \
} \
void DeoptimizationInputData::Set##name(type* value) { \
set(k##name##Index, value); \
}
#define DEFINE_DEOPT_ENTRY_ACCESSORS(name, type) \
type* DeoptimizationInputData::name(int i) { \
return type::cast(get(IndexForEntry(i) + k##name##Offset)); \
} \
void DeoptimizationInputData::Set##name(int i, type* value) { \
set(IndexForEntry(i) + k##name##Offset, value); \
}
src/objects/shared-function-info-inl.h 0 → 100644
View file @ b90c98fc
// Copyright 2017 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_OBJECTS_SHARED_FUNCTION_INFO_INL_H_
#define V8_OBJECTS_SHARED_FUNCTION_INFO_INL_H_
#include "src/heap/heap-inl.h"
#include "src/objects/shared-function-info.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
TYPE_CHECKER(SharedFunctionInfo, SHARED_FUNCTION_INFO_TYPE)
CAST_ACCESSOR(SharedFunctionInfo)
DEFINE_DEOPT_ELEMENT_ACCESSORS(SharedFunctionInfo, Object)
ACCESSORS(SharedFunctionInfo, name, Object, kNameOffset)
ACCESSORS(SharedFunctionInfo, construct_stub, Code, kConstructStubOffset)
ACCESSORS(SharedFunctionInfo, feedback_metadata, FeedbackMetadata,
kFeedbackMetadataOffset)
SMI_ACCESSORS(SharedFunctionInfo, function_literal_id, kFunctionLiteralIdOffset)
#if V8_SFI_HAS_UNIQUE_ID
SMI_ACCESSORS(SharedFunctionInfo, unique_id, kUniqueIdOffset)
#endif
ACCESSORS(SharedFunctionInfo, instance_class_name, Object,
kInstanceClassNameOffset)
ACCESSORS(SharedFunctionInfo, function_data, Object, kFunctionDataOffset)
ACCESSORS(SharedFunctionInfo, script, Object, kScriptOffset)
ACCESSORS(SharedFunctionInfo, debug_info, Object, kDebugInfoOffset)
ACCESSORS(SharedFunctionInfo, function_identifier, Object,
kFunctionIdentifierOffset)
BOOL_ACCESSORS(SharedFunctionInfo, start_position_and_type, is_named_expression,
kIsNamedExpressionBit)
BOOL_ACCESSORS(SharedFunctionInfo, start_position_and_type, is_toplevel,
kIsTopLevelBit)
#if V8_HOST_ARCH_32_BIT
SMI_ACCESSORS(SharedFunctionInfo, length, kLengthOffset)
SMI_ACCESSORS(SharedFunctionInfo, internal_formal_parameter_count,
kFormalParameterCountOffset)
SMI_ACCESSORS(SharedFunctionInfo, expected_nof_properties,
kExpectedNofPropertiesOffset)
SMI_ACCESSORS(SharedFunctionInfo, start_position_and_type,
kStartPositionAndTypeOffset)
SMI_ACCESSORS(SharedFunctionInfo, end_position, kEndPositionOffset)
SMI_ACCESSORS(SharedFunctionInfo, function_token_position,
kFunctionTokenPositionOffset)
SMI_ACCESSORS(SharedFunctionInfo, compiler_hints, kCompilerHintsOffset)
SMI_ACCESSORS(SharedFunctionInfo, opt_count_and_bailout_reason,
kOptCountAndBailoutReasonOffset)
SMI_ACCESSORS(SharedFunctionInfo, counters, kCountersOffset)
SMI_ACCESSORS(SharedFunctionInfo, ast_node_count, kAstNodeCountOffset)
SMI_ACCESSORS(SharedFunctionInfo, profiler_ticks, kProfilerTicksOffset)
#else
#if V8_TARGET_LITTLE_ENDIAN
#define PSEUDO_SMI_LO_ALIGN 0
#define PSEUDO_SMI_HI_ALIGN kIntSize
#else
#define PSEUDO_SMI_LO_ALIGN kIntSize
#define PSEUDO_SMI_HI_ALIGN 0
#endif
#define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset) \
STATIC_ASSERT(holder::offset % kPointerSize == PSEUDO_SMI_LO_ALIGN); \
int holder::name() const { \
int value = READ_INT_FIELD(this, offset); \
DCHECK(kHeapObjectTag == 1); \
DCHECK((value & kHeapObjectTag) == 0); \
return value >> 1; \
} \
void holder::set_##name(int value) { \
DCHECK(kHeapObjectTag == 1); \
DCHECK((value & 0xC0000000) == 0xC0000000 || (value & 0xC0000000) == 0x0); \
WRITE_INT_FIELD(this, offset, (value << 1) & ~kHeapObjectTag); \
}
#define PSEUDO_SMI_ACCESSORS_HI(holder, name, offset) \
STATIC_ASSERT(holder::offset % kPointerSize == PSEUDO_SMI_HI_ALIGN); \
INT_ACCESSORS(holder, name, offset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, length, kLengthOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, internal_formal_parameter_count,
kFormalParameterCountOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, expected_nof_properties,
kExpectedNofPropertiesOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, end_position, kEndPositionOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, start_position_and_type,
kStartPositionAndTypeOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, function_token_position,
kFunctionTokenPositionOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, compiler_hints,
kCompilerHintsOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, opt_count_and_bailout_reason,
kOptCountAndBailoutReasonOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, counters, kCountersOffset)
PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, ast_node_count, kAstNodeCountOffset)
PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, profiler_ticks,
kProfilerTicksOffset)
#endif
AbstractCode* SharedFunctionInfo::abstract_code() {
if (HasBytecodeArray()) {
return AbstractCode::cast(bytecode_array());
} else {
return AbstractCode::cast(code());
}
}
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, allows_lazy_compilation,
kAllowLazyCompilation)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, uses_arguments,
kUsesArguments)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, has_duplicate_parameters,
kHasDuplicateParameters)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, asm_function, kIsAsmFunction)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, is_declaration,
kIsDeclaration)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, marked_for_tier_up,
kMarkedForTierUp)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints,
has_concurrent_optimization_job, kHasConcurrentOptimizationJob)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, needs_home_object,
kNeedsHomeObject)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, native, kNative)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, force_inline, kForceInline)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, must_use_ignition_turbo,
kMustUseIgnitionTurbo)
BOOL_ACCESSORS(SharedFunctionInfo, compiler_hints, is_asm_wasm_broken,
kIsAsmWasmBroken)
BOOL_GETTER(SharedFunctionInfo, compiler_hints, optimization_disabled,
kOptimizationDisabled)
void SharedFunctionInfo::set_optimization_disabled(bool disable) {
set_compiler_hints(
BooleanBit::set(compiler_hints(), kOptimizationDisabled, disable));
}
LanguageMode SharedFunctionInfo::language_mode() {
STATIC_ASSERT(LANGUAGE_END == 2);
return construct_language_mode(
BooleanBit::get(compiler_hints(), kStrictModeFunction));
}
void SharedFunctionInfo::set_language_mode(LanguageMode language_mode) {
STATIC_ASSERT(LANGUAGE_END == 2);
// We only allow language mode transitions that set the same language mode
// again or go up in the chain:
DCHECK(is_sloppy(this->language_mode()) || is_strict(language_mode));
int hints = compiler_hints();
hints = BooleanBit::set(hints, kStrictModeFunction, is_strict(language_mode));
set_compiler_hints(hints);
}
FunctionKind SharedFunctionInfo::kind() const {
return FunctionKindBits::decode(compiler_hints());
}
void SharedFunctionInfo::set_kind(FunctionKind kind) {
DCHECK(IsValidFunctionKind(kind));
int hints = compiler_hints();
hints = FunctionKindBits::update(hints, kind);
set_compiler_hints(hints);
}
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints,
name_should_print_as_anonymous, kNameShouldPrintAsAnonymous)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, is_anonymous_expression,
kIsAnonymousExpression)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, deserialized, kDeserialized)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, has_no_side_effect,
kHasNoSideEffect)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, computed_has_no_side_effect,
kComputedHasNoSideEffect)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, debug_is_blackboxed,
kDebugIsBlackboxed)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, computed_debug_is_blackboxed,
kComputedDebugIsBlackboxed)
BOOL_ACCESSORS(SharedFunctionInfo, debugger_hints, has_reported_binary_coverage,
kHasReportedBinaryCoverage)
void SharedFunctionInfo::DontAdaptArguments() {
DCHECK(code()->kind() == Code::BUILTIN || code()->kind() == Code::STUB);
set_internal_formal_parameter_count(kDontAdaptArgumentsSentinel);
}
int SharedFunctionInfo::start_position() const {
return start_position_and_type() >> kStartPositionShift;
}
void SharedFunctionInfo::set_start_position(int start_position) {
set_start_position_and_type(
(start_position << kStartPositionShift) |
(start_position_and_type() & ~kStartPositionMask));
}
Code* SharedFunctionInfo::code() const {
return Code::cast(READ_FIELD(this, kCodeOffset));
}
void SharedFunctionInfo::set_code(Code* value, WriteBarrierMode mode) {
DCHECK(value->kind() != Code::OPTIMIZED_FUNCTION);
// If the SharedFunctionInfo has bytecode we should never mark it for lazy
// compile, since the bytecode is never flushed.
DCHECK(value != GetIsolate()->builtins()->builtin(Builtins::kCompileLazy) ||
!HasBytecodeArray());
WRITE_FIELD(this, kCodeOffset, value);
CONDITIONAL_WRITE_BARRIER(value->GetHeap(), this, kCodeOffset, value, mode);
}
void SharedFunctionInfo::ReplaceCode(Code* value) {
#ifdef DEBUG
Code::VerifyRecompiledCode(code(), value);
#endif // DEBUG
set_code(value);
}
bool SharedFunctionInfo::IsInterpreted() const {
return code()->is_interpreter_trampoline_builtin();
}
bool SharedFunctionInfo::HasBaselineCode() const {
return code()->kind() == Code::FUNCTION;
}
ScopeInfo* SharedFunctionInfo::scope_info() const {
return reinterpret_cast<ScopeInfo*>(READ_FIELD(this, kScopeInfoOffset));
}
void SharedFunctionInfo::set_scope_info(ScopeInfo* value,
WriteBarrierMode mode) {
WRITE_FIELD(this, kScopeInfoOffset, reinterpret_cast<Object*>(value));
CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kScopeInfoOffset,
reinterpret_cast<Object*>(value), mode);
}
ACCESSORS(SharedFunctionInfo, outer_scope_info, HeapObject,
kOuterScopeInfoOffset)
bool SharedFunctionInfo::is_compiled() const {
Builtins* builtins = GetIsolate()->builtins();
DCHECK(code() != builtins->builtin(Builtins::kCompileOptimizedConcurrent));
DCHECK(code() != builtins->builtin(Builtins::kCompileOptimized));
return code() != builtins->builtin(Builtins::kCompileLazy);
}
int SharedFunctionInfo::GetLength() const {
DCHECK(is_compiled());
DCHECK(HasLength());
return length();
}
bool SharedFunctionInfo::HasLength() const {
DCHECK_IMPLIES(length() < 0, length() == kInvalidLength);
return length() != kInvalidLength;
}
bool SharedFunctionInfo::has_simple_parameters() {
return scope_info()->HasSimpleParameters();
}
bool SharedFunctionInfo::HasDebugInfo() const {
bool has_debug_info = !debug_info()->IsSmi();
DCHECK_EQ(debug_info()->IsStruct(), has_debug_info);
DCHECK(!has_debug_info || HasDebugCode());
return has_debug_info;
}
bool SharedFunctionInfo::HasDebugCode() const {
if (HasBaselineCode()) return code()->has_debug_break_slots();
return HasBytecodeArray();
}
bool SharedFunctionInfo::IsApiFunction() {
return function_data()->IsFunctionTemplateInfo();
}
FunctionTemplateInfo* SharedFunctionInfo::get_api_func_data() {
DCHECK(IsApiFunction());
return FunctionTemplateInfo::cast(function_data());
}
void SharedFunctionInfo::set_api_func_data(FunctionTemplateInfo* data) {
DCHECK(function_data()->IsUndefined(GetIsolate()));
set_function_data(data);
}
bool SharedFunctionInfo::HasBytecodeArray() const {
return function_data()->IsBytecodeArray();
}
BytecodeArray* SharedFunctionInfo::bytecode_array() const {
DCHECK(HasBytecodeArray());
return BytecodeArray::cast(function_data());
}
void SharedFunctionInfo::set_bytecode_array(BytecodeArray* bytecode) {
DCHECK(function_data()->IsUndefined(GetIsolate()));
set_function_data(bytecode);
}
void SharedFunctionInfo::ClearBytecodeArray() {
DCHECK(function_data()->IsUndefined(GetIsolate()) || HasBytecodeArray());
set_function_data(GetHeap()->undefined_value());
}
bool SharedFunctionInfo::HasAsmWasmData() const {
return function_data()->IsFixedArray();
}
FixedArray* SharedFunctionInfo::asm_wasm_data() const {
DCHECK(HasAsmWasmData());
return FixedArray::cast(function_data());
}
void SharedFunctionInfo::set_asm_wasm_data(FixedArray* data) {
DCHECK(function_data()->IsUndefined(GetIsolate()) || HasAsmWasmData());
set_function_data(data);
}
void SharedFunctionInfo::ClearAsmWasmData() {
DCHECK(function_data()->IsUndefined(GetIsolate()) || HasAsmWasmData());
set_function_data(GetHeap()->undefined_value());
}
bool SharedFunctionInfo::HasBuiltinFunctionId() {
return function_identifier()->IsSmi();
}
BuiltinFunctionId SharedFunctionInfo::builtin_function_id() {
DCHECK(HasBuiltinFunctionId());
return static_cast<BuiltinFunctionId>(
Smi::cast(function_identifier())->value());
}
void SharedFunctionInfo::set_builtin_function_id(BuiltinFunctionId id) {
set_function_identifier(Smi::FromInt(id));
}
bool SharedFunctionInfo::HasInferredName() {
return function_identifier()->IsString();
}
String* SharedFunctionInfo::inferred_name() {
if (HasInferredName()) {
return String::cast(function_identifier());
}
Isolate* isolate = GetIsolate();
DCHECK(function_identifier()->IsUndefined(isolate) || HasBuiltinFunctionId());
return isolate->heap()->empty_string();
}
void SharedFunctionInfo::set_inferred_name(String* inferred_name) {
DCHECK(function_identifier()->IsUndefined(GetIsolate()) || HasInferredName());
set_function_identifier(inferred_name);
}
int SharedFunctionInfo::ic_age() { return ICAgeBits::decode(counters()); }
void SharedFunctionInfo::set_ic_age(int ic_age) {
set_counters(ICAgeBits::update(counters(), ic_age));
}
int SharedFunctionInfo::deopt_count() {
return DeoptCountBits::decode(counters());
}
void SharedFunctionInfo::set_deopt_count(int deopt_count) {
set_counters(DeoptCountBits::update(counters(), deopt_count));
}
void SharedFunctionInfo::increment_deopt_count() {
int value = counters();
int deopt_count = DeoptCountBits::decode(value);
// Saturate the deopt count when incrementing, rather than overflowing.
if (deopt_count < DeoptCountBits::kMax) {
set_counters(DeoptCountBits::update(value, deopt_count + 1));
}
}
int SharedFunctionInfo::opt_reenable_tries() {
return OptReenableTriesBits::decode(counters());
}
void SharedFunctionInfo::set_opt_reenable_tries(int tries) {
set_counters(OptReenableTriesBits::update(counters(), tries));
}
int SharedFunctionInfo::opt_count() {
return OptCountBits::decode(opt_count_and_bailout_reason());
}
void SharedFunctionInfo::set_opt_count(int opt_count) {
set_opt_count_and_bailout_reason(
OptCountBits::update(opt_count_and_bailout_reason(), opt_count));
}
BailoutReason SharedFunctionInfo::disable_optimization_reason() {
return static_cast<BailoutReason>(
DisabledOptimizationReasonBits::decode(opt_count_and_bailout_reason()));
}
bool SharedFunctionInfo::has_deoptimization_support() {
Code* code = this->code();
return code->kind() == Code::FUNCTION && code->has_deoptimization_support();
}
void SharedFunctionInfo::TryReenableOptimization() {
int tries = opt_reenable_tries();
set_opt_reenable_tries((tries + 1) & OptReenableTriesBits::kMax);
// We reenable optimization whenever the number of tries is a large
// enough power of 2.
if (tries >= 16 && (((tries - 1) & tries) == 0)) {
set_optimization_disabled(false);
set_deopt_count(0);
}
}
void SharedFunctionInfo::set_disable_optimization_reason(BailoutReason reason) {
set_opt_count_and_bailout_reason(DisabledOptimizationReasonBits::update(
opt_count_and_bailout_reason(), reason));
}
bool SharedFunctionInfo::IsUserJavaScript() {
Object* script_obj = script();
if (script_obj->IsUndefined(GetIsolate())) return false;
Script* script = Script::cast(script_obj);
return script->IsUserJavaScript();
}
bool SharedFunctionInfo::IsSubjectToDebugging() {
return IsUserJavaScript() && !HasAsmWasmData();
}
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_SHARED_FUNCTION_INFO_INL_H_
src/objects/shared-function-info.h 0 → 100644
View file @ b90c98fc
// Copyright 2017 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_OBJECTS_SHARED_FUNCTION_INFO_H_
#define V8_OBJECTS_SHARED_FUNCTION_INFO_H_
#include "src/objects.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
// SharedFunctionInfo describes the JSFunction information that can be
// shared by multiple instances of the function.
class SharedFunctionInfo : public HeapObject {
public:
// [name]: Function name.
DECL_ACCESSORS(name, Object)
// [code]: Function code.
DECL_ACCESSORS(code, Code)
// Get the abstract code associated with the function, which will either be
// a Code object or a BytecodeArray.
inline AbstractCode* abstract_code();
// Tells whether or not this shared function info is interpreted.
//
// Note: function->IsInterpreted() does not necessarily return the same value
// as function->shared()->IsInterpreted() because the closure might have been
// optimized.
inline bool IsInterpreted() const;
inline void ReplaceCode(Code* code);
inline bool HasBaselineCode() const;
// Set up the link between shared function info and the script. The shared
// function info is added to the list on the script.
V8_EXPORT_PRIVATE static void SetScript(Handle<SharedFunctionInfo> shared,
Handle<Object> script_object);
// Layout description of the optimized code map.
static const int kEntriesStart = 0;
static const int kContextOffset = 0;
static const int kCachedCodeOffset = 1;
static const int kEntryLength = 2;
static const int kInitialLength = kEntriesStart + kEntryLength;
static const int kNotFound = -1;
static const int kInvalidLength = -1;
// Helpers for assembly code that does a backwards walk of the optimized code
// map.
static const int kOffsetToPreviousContext =
FixedArray::kHeaderSize + kPointerSize * (kContextOffset - kEntryLength);
static const int kOffsetToPreviousCachedCode =
FixedArray::kHeaderSize +
kPointerSize * (kCachedCodeOffset - kEntryLength);
// [scope_info]: Scope info.
DECL_ACCESSORS(scope_info, ScopeInfo)
// The outer scope info for the purpose of parsing this function, or the hole
// value if it isn't yet known.
DECL_ACCESSORS(outer_scope_info, HeapObject)
// [construct stub]: Code stub for constructing instances of this function.
DECL_ACCESSORS(construct_stub, Code)
// Sets the given code as the construct stub, and marks builtin code objects
// as a construct stub.
void SetConstructStub(Code* code);
// Returns if this function has been compiled to native code yet.
inline bool is_compiled() const;
// [length]: The function length - usually the number of declared parameters.
// Use up to 2^30 parameters. The value is only reliable when the function has
// been compiled.
inline int GetLength() const;
inline bool HasLength() const;
inline void set_length(int value);
// [internal formal parameter count]: The declared number of parameters.
// For subclass constructors, also includes new.target.
// The size of function's frame is internal_formal_parameter_count + 1.
inline int internal_formal_parameter_count() const;
inline void set_internal_formal_parameter_count(int value);
// Set the formal parameter count so the function code will be
// called without using argument adaptor frames.
inline void DontAdaptArguments();
// [expected_nof_properties]: Expected number of properties for the
// function. The value is only reliable when the function has been compiled.
inline int expected_nof_properties() const;
inline void set_expected_nof_properties(int value);
// [feedback_metadata] - describes ast node feedback from full-codegen and
// (increasingly) from crankshafted code where sufficient feedback isn't
// available.
DECL_ACCESSORS(feedback_metadata, FeedbackMetadata)
// [function_literal_id] - uniquely identifies the FunctionLiteral this
// SharedFunctionInfo represents within its script, or -1 if this
// SharedFunctionInfo object doesn't correspond to a parsed FunctionLiteral.
inline int function_literal_id() const;
inline void set_function_literal_id(int value);
#if V8_SFI_HAS_UNIQUE_ID
// [unique_id] - For --trace-maps purposes, an identifier that's persistent
// even if the GC moves this SharedFunctionInfo.
inline int unique_id() const;
inline void set_unique_id(int value);
#endif
// [instance class name]: class name for instances.
DECL_ACCESSORS(instance_class_name, Object)
// [function data]: This field holds some additional data for function.
// Currently it has one of:
// - a FunctionTemplateInfo to make benefit the API [IsApiFunction()].
// - a BytecodeArray for the interpreter [HasBytecodeArray()].
// - a FixedArray with Asm->Wasm conversion [HasAsmWasmData()].
DECL_ACCESSORS(function_data, Object)
inline bool IsApiFunction();
inline FunctionTemplateInfo* get_api_func_data();
inline void set_api_func_data(FunctionTemplateInfo* data);
inline bool HasBytecodeArray() const;
inline BytecodeArray* bytecode_array() const;
inline void set_bytecode_array(BytecodeArray* bytecode);
inline void ClearBytecodeArray();
inline bool HasAsmWasmData() const;
inline FixedArray* asm_wasm_data() const;
inline void set_asm_wasm_data(FixedArray* data);
inline void ClearAsmWasmData();
// [function identifier]: This field holds an additional identifier for the
// function.
// - a Smi identifying a builtin function [HasBuiltinFunctionId()].
// - a String identifying the function's inferred name [HasInferredName()].
// The inferred_name is inferred from variable or property
// assignment of this function. It is used to facilitate debugging and
// profiling of JavaScript code written in OO style, where almost
// all functions are anonymous but are assigned to object
// properties.
DECL_ACCESSORS(function_identifier, Object)
inline bool HasBuiltinFunctionId();
inline BuiltinFunctionId builtin_function_id();
inline void set_builtin_function_id(BuiltinFunctionId id);
inline bool HasInferredName();
inline String* inferred_name();
inline void set_inferred_name(String* inferred_name);
// [script]: Script from which the function originates.
DECL_ACCESSORS(script, Object)
// [start_position_and_type]: Field used to store both the source code
// position, whether or not the function is a function expression,
// and whether or not the function is a toplevel function. The two
// least significants bit indicates whether the function is an
// expression and the rest contains the source code position.
inline int start_position_and_type() const;
inline void set_start_position_and_type(int value);
// The function is subject to debugging if a debug info is attached.
inline bool HasDebugInfo() const;
DebugInfo* GetDebugInfo() const;
// A function has debug code if the compiled code has debug break slots.
inline bool HasDebugCode() const;
// [debug info]: Debug information.
DECL_ACCESSORS(debug_info, Object)
// Bit field containing various information collected for debugging.
// This field is either stored on the kDebugInfo slot or inside the
// debug info struct.
int debugger_hints() const;
void set_debugger_hints(int value);
// Indicates that the function was created by the Function function.
// Though it's anonymous, toString should treat it as if it had the name
// "anonymous". We don't set the name itself so that the system does not
// see a binding for it.
DECL_BOOLEAN_ACCESSORS(name_should_print_as_anonymous)
// Indicates that the function is either an anonymous expression
// or an arrow function (the name field can be set through the API,
// which does not change this flag).
DECL_BOOLEAN_ACCESSORS(is_anonymous_expression)
// Indicates that the the shared function info is deserialized from cache.
DECL_BOOLEAN_ACCESSORS(deserialized)
// Indicates that the function cannot cause side-effects.
DECL_BOOLEAN_ACCESSORS(has_no_side_effect)
// Indicates that |has_no_side_effect| has been computed and set.
DECL_BOOLEAN_ACCESSORS(computed_has_no_side_effect)
// Indicates that the function should be skipped during stepping.
DECL_BOOLEAN_ACCESSORS(debug_is_blackboxed)
// Indicates that |debug_is_blackboxed| has been computed and set.
DECL_BOOLEAN_ACCESSORS(computed_debug_is_blackboxed)
// Indicates that the function has been reported for binary code coverage.
DECL_BOOLEAN_ACCESSORS(has_reported_binary_coverage)
// The function's name if it is non-empty, otherwise the inferred name.
String* DebugName();
// The function cannot cause any side effects.
bool HasNoSideEffect();
// Used for flags such as --hydrogen-filter.
bool PassesFilter(const char* raw_filter);
// Position of the 'function' token in the script source.
inline int function_token_position() const;
inline void set_function_token_position(int function_token_position);
// Position of this function in the script source.
inline int start_position() const;
inline void set_start_position(int start_position);
// End position of this function in the script source.
inline int end_position() const;
inline void set_end_position(int end_position);
// Is this function a named function expression in the source code.
DECL_BOOLEAN_ACCESSORS(is_named_expression)
// Is this function a top-level function (scripts, evals).
DECL_BOOLEAN_ACCESSORS(is_toplevel)
// Bit field containing various information collected by the compiler to
// drive optimization.
inline int compiler_hints() const;
inline void set_compiler_hints(int value);
inline int ast_node_count() const;
inline void set_ast_node_count(int count);
inline int profiler_ticks() const;
inline void set_profiler_ticks(int ticks);
// Inline cache age is used to infer whether the function survived a context
// disposal or not. In the former case we reset the opt_count.
inline int ic_age();
inline void set_ic_age(int age);
// Indicates if this function can be lazy compiled.
DECL_BOOLEAN_ACCESSORS(allows_lazy_compilation)
// Indicates whether optimizations have been disabled for this
// shared function info. If a function is repeatedly optimized or if
// we cannot optimize the function we disable optimization to avoid
// spending time attempting to optimize it again.
DECL_BOOLEAN_ACCESSORS(optimization_disabled)
// Indicates the language mode.
inline LanguageMode language_mode();
inline void set_language_mode(LanguageMode language_mode);
// False if the function definitely does not allocate an arguments object.
DECL_BOOLEAN_ACCESSORS(uses_arguments)
// Indicates that this function uses a super property (or an eval that may
// use a super property).
// This is needed to set up the [[HomeObject]] on the function instance.
DECL_BOOLEAN_ACCESSORS(needs_home_object)
// True if the function has any duplicated parameter names.
DECL_BOOLEAN_ACCESSORS(has_duplicate_parameters)
// Indicates whether the function is a native function.
// These needs special treatment in .call and .apply since
// null passed as the receiver should not be translated to the
// global object.
DECL_BOOLEAN_ACCESSORS(native)
// Indicate that this function should always be inlined in optimized code.
DECL_BOOLEAN_ACCESSORS(force_inline)
// Indicates that code for this function must be compiled through the
// Ignition / TurboFan pipeline, and is unsupported by
// FullCodegen / Crankshaft.
DECL_BOOLEAN_ACCESSORS(must_use_ignition_turbo)
// Indicates that this function is an asm function.
DECL_BOOLEAN_ACCESSORS(asm_function)
// Whether this function was created from a FunctionDeclaration.
DECL_BOOLEAN_ACCESSORS(is_declaration)
// Whether this function was marked to be tiered up.
DECL_BOOLEAN_ACCESSORS(marked_for_tier_up)
// Whether this function has a concurrent compilation job running.
DECL_BOOLEAN_ACCESSORS(has_concurrent_optimization_job)
// Indicates that asm->wasm conversion failed and should not be re-attempted.
DECL_BOOLEAN_ACCESSORS(is_asm_wasm_broken)
inline FunctionKind kind() const;
inline void set_kind(FunctionKind kind);
// Indicates whether or not the code in the shared function support
// deoptimization.
inline bool has_deoptimization_support();
// Enable deoptimization support through recompiled code.
void EnableDeoptimizationSupport(Code* recompiled);
// Disable (further) attempted optimization of all functions sharing this
// shared function info.
void DisableOptimization(BailoutReason reason);
inline BailoutReason disable_optimization_reason();
// Lookup the bailout ID and DCHECK that it exists in the non-optimized
// code, returns whether it asserted (i.e., always true if assertions are
// disabled).
bool VerifyBailoutId(BailoutId id);
// [source code]: Source code for the function.
bool HasSourceCode() const;
Handle<Object> GetSourceCode();
Handle<Object> GetSourceCodeHarmony();
// Number of times the function was optimized.
inline int opt_count();
inline void set_opt_count(int opt_count);
// Number of times the function was deoptimized.
inline void set_deopt_count(int value);
inline int deopt_count();
inline void increment_deopt_count();
// Number of time we tried to re-enable optimization after it
// was disabled due to high number of deoptimizations.
inline void set_opt_reenable_tries(int value);
inline int opt_reenable_tries();
inline void TryReenableOptimization();
// Stores deopt_count, opt_reenable_tries and ic_age as bit-fields.
inline void set_counters(int value);
inline int counters() const;
// Stores opt_count and bailout_reason as bit-fields.
inline void set_opt_count_and_bailout_reason(int value);
inline int opt_count_and_bailout_reason() const;
inline void set_disable_optimization_reason(BailoutReason reason);
// Tells whether this function should be subject to debugging.
inline bool IsSubjectToDebugging();
// Whether this function is defined in user-provided JavaScript code.
inline bool IsUserJavaScript();
// Check whether or not this function is inlineable.
bool IsInlineable();
// Source size of this function.
int SourceSize();
// Returns `false` if formal parameters include rest parameters, optional
// parameters, or destructuring parameters.
// TODO(caitp): make this a flag set during parsing
inline bool has_simple_parameters();
// Initialize a SharedFunctionInfo from a parsed function literal.
static void InitFromFunctionLiteral(Handle<SharedFunctionInfo> shared_info,
FunctionLiteral* lit);
// Sets the expected number of properties based on estimate from parser.
void SetExpectedNofPropertiesFromEstimate(FunctionLiteral* literal);
// Dispatched behavior.
DECLARE_PRINTER(SharedFunctionInfo)
DECLARE_VERIFIER(SharedFunctionInfo)
void ResetForNewContext(int new_ic_age);
// Iterate over all shared function infos in a given script.
class ScriptIterator {
public:
explicit ScriptIterator(Handle<Script> script);
ScriptIterator(Isolate* isolate, Handle<FixedArray> shared_function_infos);
SharedFunctionInfo* Next();
// Reset the iterator to run on |script|.
void Reset(Handle<Script> script);
private:
Isolate* isolate_;
Handle<FixedArray> shared_function_infos_;
int index_;
DISALLOW_COPY_AND_ASSIGN(ScriptIterator);
};
// Iterate over all shared function infos on the heap.
class GlobalIterator {
public:
explicit GlobalIterator(Isolate* isolate);
SharedFunctionInfo* Next();
private:
Script::Iterator script_iterator_;
WeakFixedArray::Iterator noscript_sfi_iterator_;
SharedFunctionInfo::ScriptIterator sfi_iterator_;
DisallowHeapAllocation no_gc_;
DISALLOW_COPY_AND_ASSIGN(GlobalIterator);
};
DECLARE_CAST(SharedFunctionInfo)
// Constants.
static const int kDontAdaptArgumentsSentinel = -1;
// Layout description.
// Pointer fields.
static const int kCodeOffset = HeapObject::kHeaderSize;
static const int kNameOffset = kCodeOffset + kPointerSize;
static const int kScopeInfoOffset = kNameOffset + kPointerSize;
static const int kOuterScopeInfoOffset = kScopeInfoOffset + kPointerSize;
static const int kConstructStubOffset = kOuterScopeInfoOffset + kPointerSize;
static const int kInstanceClassNameOffset =
kConstructStubOffset + kPointerSize;
static const int kFunctionDataOffset =
kInstanceClassNameOffset + kPointerSize;
static const int kScriptOffset = kFunctionDataOffset + kPointerSize;
static const int kDebugInfoOffset = kScriptOffset + kPointerSize;
static const int kFunctionIdentifierOffset = kDebugInfoOffset + kPointerSize;
static const int kFeedbackMetadataOffset =
kFunctionIdentifierOffset + kPointerSize;
static const int kFunctionLiteralIdOffset =
kFeedbackMetadataOffset + kPointerSize;
#if V8_SFI_HAS_UNIQUE_ID
static const int kUniqueIdOffset = kFunctionLiteralIdOffset + kPointerSize;
static const int kLastPointerFieldOffset = kUniqueIdOffset;
#else
// Just to not break the postmortrem support with conditional offsets
static const int kUniqueIdOffset = kFunctionLiteralIdOffset;
static const int kLastPointerFieldOffset = kFunctionLiteralIdOffset;
#endif
#if V8_HOST_ARCH_32_BIT
// Smi fields.
static const int kLengthOffset = kLastPointerFieldOffset + kPointerSize;
static const int kFormalParameterCountOffset = kLengthOffset + kPointerSize;
static const int kExpectedNofPropertiesOffset =
kFormalParameterCountOffset + kPointerSize;
static const int kNumLiteralsOffset =
kExpectedNofPropertiesOffset + kPointerSize;
static const int kStartPositionAndTypeOffset =
kNumLiteralsOffset + kPointerSize;
static const int kEndPositionOffset =
kStartPositionAndTypeOffset + kPointerSize;
static const int kFunctionTokenPositionOffset =
kEndPositionOffset + kPointerSize;
static const int kCompilerHintsOffset =
kFunctionTokenPositionOffset + kPointerSize;
static const int kOptCountAndBailoutReasonOffset =
kCompilerHintsOffset + kPointerSize;
static const int kCountersOffset =
kOptCountAndBailoutReasonOffset + kPointerSize;
static const int kAstNodeCountOffset = kCountersOffset + kPointerSize;
static const int kProfilerTicksOffset = kAstNodeCountOffset + kPointerSize;
// Total size.
static const int kSize = kProfilerTicksOffset + kPointerSize;
#else
// The only reason to use smi fields instead of int fields is to allow
// iteration without maps decoding during garbage collections.
// To avoid wasting space on 64-bit architectures we use the following trick:
// we group integer fields into pairs
// The least significant integer in each pair is shifted left by 1. By doing
// this we guarantee that LSB of each kPointerSize aligned word is not set and
// thus this word cannot be treated as pointer to HeapObject during old space
// traversal.
#if V8_TARGET_LITTLE_ENDIAN
static const int kLengthOffset = kLastPointerFieldOffset + kPointerSize;
static const int kFormalParameterCountOffset = kLengthOffset + kIntSize;
static const int kExpectedNofPropertiesOffset =
kFormalParameterCountOffset + kIntSize;
static const int kNumLiteralsOffset = kExpectedNofPropertiesOffset + kIntSize;
static const int kEndPositionOffset = kNumLiteralsOffset + kIntSize;
static const int kStartPositionAndTypeOffset = kEndPositionOffset + kIntSize;
static const int kFunctionTokenPositionOffset =
kStartPositionAndTypeOffset + kIntSize;
static const int kCompilerHintsOffset =
kFunctionTokenPositionOffset + kIntSize;
static const int kOptCountAndBailoutReasonOffset =
kCompilerHintsOffset + kIntSize;
static const int kCountersOffset = kOptCountAndBailoutReasonOffset + kIntSize;
static const int kAstNodeCountOffset = kCountersOffset + kIntSize;
static const int kProfilerTicksOffset = kAstNodeCountOffset + kIntSize;
// Total size.
static const int kSize = kProfilerTicksOffset + kIntSize;
#elif V8_TARGET_BIG_ENDIAN
static const int kFormalParameterCountOffset =
kLastPointerFieldOffset + kPointerSize;
static const int kLengthOffset = kFormalParameterCountOffset + kIntSize;
static const int kNumLiteralsOffset = kLengthOffset + kIntSize;
static const int kExpectedNofPropertiesOffset = kNumLiteralsOffset + kIntSize;
static const int kStartPositionAndTypeOffset =
kExpectedNofPropertiesOffset + kIntSize;
static const int kEndPositionOffset = kStartPositionAndTypeOffset + kIntSize;
static const int kCompilerHintsOffset = kEndPositionOffset + kIntSize;
static const int kFunctionTokenPositionOffset =
kCompilerHintsOffset + kIntSize;
static const int kCountersOffset = kFunctionTokenPositionOffset + kIntSize;
static const int kOptCountAndBailoutReasonOffset = kCountersOffset + kIntSize;
static const int kProfilerTicksOffset =
kOptCountAndBailoutReasonOffset + kIntSize;
static const int kAstNodeCountOffset = kProfilerTicksOffset + kIntSize;
// Total size.
static const int kSize = kAstNodeCountOffset + kIntSize;
#else
#error Unknown byte ordering
#endif // Big endian
#endif // 64-bit
static const int kAlignedSize = POINTER_SIZE_ALIGN(kSize);
typedef FixedBodyDescriptor<kCodeOffset,
kLastPointerFieldOffset + kPointerSize, kSize>
BodyDescriptor;
typedef FixedBodyDescriptor<kNameOffset,
kLastPointerFieldOffset + kPointerSize, kSize>
BodyDescriptorWeakCode;
// Bit positions in start_position_and_type.
// The source code start position is in the 30 most significant bits of
// the start_position_and_type field.
static const int kIsNamedExpressionBit = 0;
static const int kIsTopLevelBit = 1;
static const int kStartPositionShift = 2;
static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1);
// Bit positions in compiler_hints.
enum CompilerHints {
// byte 0
kAllowLazyCompilation,
kMarkedForTierUp,
kOptimizationDisabled,
kHasDuplicateParameters,
kNative,
kStrictModeFunction,
kUsesArguments,
kNeedsHomeObject,
// byte 1
kForceInline,
kIsAsmFunction,
kMustUseIgnitionTurbo,
kIsDeclaration,
kIsAsmWasmBroken,
kHasConcurrentOptimizationJob,
kUnused1, // Unused fields.
kUnused2,
// byte 2
kFunctionKind,
// rest of byte 2 and first two bits of byte 3 are used by FunctionKind
// byte 3
kCompilerHintsCount = kFunctionKind + 10, // Pseudo entry
};
// Bit positions in debugger_hints.
enum DebuggerHints {
kIsAnonymousExpression,
kNameShouldPrintAsAnonymous,
kDeserialized,
kHasNoSideEffect,
kComputedHasNoSideEffect,
kDebugIsBlackboxed,
kComputedDebugIsBlackboxed,
kHasReportedBinaryCoverage
};
// kFunctionKind has to be byte-aligned
STATIC_ASSERT((kFunctionKind % kBitsPerByte) == 0);
class FunctionKindBits : public BitField<FunctionKind, kFunctionKind, 10> {};
class DeoptCountBits : public BitField<int, 0, 4> {};
class OptReenableTriesBits : public BitField<int, 4, 18> {};
class ICAgeBits : public BitField<int, 22, 8> {};
class OptCountBits : public BitField<int, 0, 22> {};
class DisabledOptimizationReasonBits : public BitField<int, 22, 8> {};
private:
FRIEND_TEST(PreParserTest, LazyFunctionLength);
inline int length() const;
#if V8_HOST_ARCH_32_BIT
// On 32 bit platforms, compiler hints is a smi.
static const int kCompilerHintsSmiTagSize = kSmiTagSize;
static const int kCompilerHintsSize = kPointerSize;
#else
// On 64 bit platforms, compiler hints is not a smi, see comment above.
static const int kCompilerHintsSmiTagSize = 0;
static const int kCompilerHintsSize = kIntSize;
#endif
STATIC_ASSERT(SharedFunctionInfo::kCompilerHintsCount +
SharedFunctionInfo::kCompilerHintsSmiTagSize <=
SharedFunctionInfo::kCompilerHintsSize * kBitsPerByte);
public:
// Constants for optimizing codegen for strict mode function and
// native tests when using integer-width instructions.
static const int kStrictModeBit =
kStrictModeFunction + kCompilerHintsSmiTagSize;
static const int kNativeBit = kNative + kCompilerHintsSmiTagSize;
static const int kHasDuplicateParametersBit =
kHasDuplicateParameters + kCompilerHintsSmiTagSize;
static const int kFunctionKindShift =
kFunctionKind + kCompilerHintsSmiTagSize;
static const int kAllFunctionKindBitsMask = FunctionKindBits::kMask
<< kCompilerHintsSmiTagSize;
static const int kMarkedForTierUpBit =
kMarkedForTierUp + kCompilerHintsSmiTagSize;
// Constants for optimizing codegen for strict mode function and
// native tests.
// Allows to use byte-width instructions.
static const int kStrictModeBitWithinByte = kStrictModeBit % kBitsPerByte;
static const int kNativeBitWithinByte = kNativeBit % kBitsPerByte;
static const int kHasDuplicateParametersBitWithinByte =
kHasDuplicateParametersBit % kBitsPerByte;
static const int kClassConstructorBitsWithinByte =
FunctionKind::kClassConstructor << kCompilerHintsSmiTagSize;
STATIC_ASSERT(kClassConstructorBitsWithinByte < (1 << kBitsPerByte));
static const int kDerivedConstructorBitsWithinByte =
FunctionKind::kDerivedConstructor << kCompilerHintsSmiTagSize;
STATIC_ASSERT(kDerivedConstructorBitsWithinByte < (1 << kBitsPerByte));
static const int kMarkedForTierUpBitWithinByte =
kMarkedForTierUpBit % kBitsPerByte;
#if defined(V8_TARGET_LITTLE_ENDIAN)
#define BYTE_OFFSET(compiler_hint) \
kCompilerHintsOffset + \
(compiler_hint + kCompilerHintsSmiTagSize) / kBitsPerByte
#elif defined(V8_TARGET_BIG_ENDIAN)
#define BYTE_OFFSET(compiler_hint) \
kCompilerHintsOffset + (kCompilerHintsSize - 1) - \
((compiler_hint + kCompilerHintsSmiTagSize) / kBitsPerByte)
#else
#error Unknown byte ordering
#endif
static const int kStrictModeByteOffset = BYTE_OFFSET(kStrictModeFunction);
static const int kNativeByteOffset = BYTE_OFFSET(kNative);
static const int kFunctionKindByteOffset = BYTE_OFFSET(kFunctionKind);
static const int kHasDuplicateParametersByteOffset =
BYTE_OFFSET(kHasDuplicateParameters);
static const int kMarkedForTierUpByteOffset = BYTE_OFFSET(kMarkedForTierUp);
#undef BYTE_OFFSET
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(SharedFunctionInfo);
};
// Result of searching in an optimized code map of a SharedFunctionInfo. Note
// that both {code} and {vector} can be NULL to pass search result status.
struct CodeAndVector {
Code* code; // Cached optimized code.
FeedbackVector* vector; // Cached feedback vector.
};
// Printing support.
struct SourceCodeOf {
explicit SourceCodeOf(SharedFunctionInfo* v, int max = -1)
: value(v), max_length(max) {}
const SharedFunctionInfo* value;
int max_length;
};
std::ostream& operator<<(std::ostream& os, const SourceCodeOf& v);
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_SHARED_FUNCTION_INFO_H_
src/v8.gyp
View file @ b90c98fc
......@@ -1247,6 +1247,8 @@
'objects/regexp-match-info.h',
'objects/scope-info.cc',
'objects/scope-info.h',
'objects/shared-function-info-inl.h',
'objects/shared-function-info.h',
'objects/string-table.h',
'ostreams.cc',
'ostreams.h',
......@@ -2553,6 +2555,8 @@
'objects-inl.h',
'objects/map.h',
'objects/map-inl.h',
'objects/shared-function-info.h',
'objects/shared-function-info-inl.h',
],
},
'actions': [
......
test/cctest/test-feedback-vector.h
View file @ b90c98fc
......@@ -6,7 +6,7 @@
#define V8_TEST_FEEDBACK_VECTOR_H_
#include "src/objects.h"
#include "src/objects/shared-function-info.h"
namespace v8 {
namespace internal {
......
test/unittests/compiler/liveness-analyzer-unittest.cc
View file @ b90c98fc
......@@ -2,11 +2,13 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/compiler/liveness-analyzer.h"
#include "src/compiler/js-graph.h"
#include "src/compiler/linkage.h"
#include "src/compiler/liveness-analyzer.h"
#include "src/compiler/node-matchers.h"
#include "src/compiler/state-values-utils.h"
#include "src/objects/shared-function-info.h"
#include "test/unittests/compiler/graph-unittest.h"
#include "test/unittests/compiler/node-test-utils.h"
......
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