chromium/v8/src/execution/tiering-manager.cc

// Copyright 2012 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.

#include "src/execution/tiering-manager.h"

#include <optional>

#include "src/base/platform/platform.h"
#include "src/baseline/baseline.h"
#include "src/codegen/assembler.h"
#include "src/codegen/compilation-cache.h"
#include "src/codegen/compiler.h"
#include "src/codegen/pending-optimization-table.h"
#include "src/common/globals.h"
#include "src/diagnostics/code-tracer.h"
#include "src/execution/execution.h"
#include "src/execution/frames-inl.h"
#include "src/flags/flags.h"
#include "src/handles/global-handles.h"
#include "src/init/bootstrapper.h"
#include "src/interpreter/interpreter.h"
#include "src/objects/code-kind.h"
#include "src/objects/code.h"
#include "src/tracing/trace-event.h"

#ifdef V8_ENABLE_SPARKPLUG
#include "src/baseline/baseline-batch-compiler.h"
#endif  // V8_ENABLE_SPARKPLUG

namespace v8 {
namespace internal {

#define OPTIMIZATION_REASON_LIST …

enum class OptimizationReason : uint8_t { … };

char const* OptimizationReasonToString(OptimizationReason reason) { … }

#undef OPTIMIZATION_REASON_LIST

std::ostream& operator<<(std::ostream& os, OptimizationReason reason) { … }

class OptimizationDecision { … };
// Since we pass by value:
static_assert …;

namespace {

void TraceInOptimizationQueue(Tagged<JSFunction> function,
                              CodeKind current_code_kind) { … }

void TraceHeuristicOptimizationDisallowed(Tagged<JSFunction> function) { … }

void TraceRecompile(Isolate* isolate, Tagged<JSFunction> function,
                    OptimizationDecision d) { … }

}  // namespace

void TraceManualRecompile(Tagged<JSFunction> function, CodeKind code_kind,
                          ConcurrencyMode concurrency_mode) { … }

void TieringManager::Optimize(Tagged<JSFunction> function,
                              OptimizationDecision d) { … }

void TieringManager::MarkForTurboFanOptimization(Tagged<JSFunction> function) { … }

namespace {

// Returns true when |function| should be enqueued for sparkplug compilation for
// the first time.
bool FirstTimeTierUpToSparkplug(Isolate* isolate, Tagged<JSFunction> function) { … }

bool TieringOrTieredUpToOptimizedTier(Tagged<FeedbackVector> vector) { … }

bool TiersUpToMaglev(CodeKind code_kind) { … }

bool TiersUpToMaglev(std::optional<CodeKind> code_kind) { … }

int InterruptBudgetFor(std::optional<CodeKind> code_kind,
                       TieringState tiering_state,
                       CachedTieringDecision cached_tiering_decision,
                       int bytecode_length) { … }

}  // namespace

// static
int TieringManager::InterruptBudgetFor(
    Isolate* isolate, Tagged<JSFunction> function,
    std::optional<CodeKind> override_active_tier) { … }

namespace {

void TrySetOsrUrgency(Isolate* isolate, Tagged<JSFunction> function,
                      int osr_urgency) { … }

void TryIncrementOsrUrgency(Isolate* isolate, Tagged<JSFunction> function) { … }

void TryRequestOsrAtNextOpportunity(Isolate* isolate,
                                    Tagged<JSFunction> function) { … }

}  // namespace

void TieringManager::RequestOsrAtNextOpportunity(Tagged<JSFunction> function) { … }

void TieringManager::MaybeOptimizeFrame(Tagged<JSFunction> function,
                                        CodeKind current_code_kind) { … }

OptimizationDecision TieringManager::ShouldOptimize(
    Tagged<FeedbackVector> feedback_vector, CodeKind current_code_kind) { … }

namespace {

bool ShouldResetInterruptBudgetByICChange(
    CachedTieringDecision cached_tiering_decision) { … }

}  // namespace

void TieringManager::NotifyICChanged(Tagged<FeedbackVector> vector) { … }

TieringManager::OnInterruptTickScope::OnInterruptTickScope() { … }

void TieringManager::OnInterruptTick(DirectHandle<JSFunction> function,
                                     CodeKind code_kind) { … }

}  // namespace internal
}  // namespace v8