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// Copyright 2014 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_COMPILER_NODE_ORIGIN_TABLE_H_
#define V8_COMPILER_NODE_ORIGIN_TABLE_H_
#include <limits>
#include "src/base/compiler-specific.h"
#include "src/codegen/source-position.h"
#include "src/common/globals.h"
#include "src/compiler/node-aux-data.h"
namespace v8 {
namespace internal {
namespace compiler {
class NodeOrigin {
public:
enum OriginKind { kWasmBytecode, kGraphNode };
NodeOrigin(const char* phase_name, const char* reducer_name,
NodeId created_from)
: phase_name_(phase_name),
reducer_name_(reducer_name),
origin_kind_(kGraphNode),
created_from_(created_from) {}
NodeOrigin(const char* phase_name, const char* reducer_name,
OriginKind origin_kind, uint64_t created_from)
: phase_name_(phase_name),
reducer_name_(reducer_name),
origin_kind_(origin_kind),
created_from_(created_from) {}
NodeOrigin(const NodeOrigin& other) V8_NOEXCEPT = default;
static NodeOrigin Unknown() { return NodeOrigin(); }
bool IsKnown() { return created_from_ >= 0; }
int64_t created_from() const { return created_from_; }
const char* reducer_name() const { return reducer_name_; }
const char* phase_name() const { return phase_name_; }
OriginKind origin_kind() const { return origin_kind_; }
bool operator==(const NodeOrigin& o) const {
return reducer_name_ == o.reducer_name_ && created_from_ == o.created_from_;
}
void PrintJson(std::ostream& out) const;
private:
NodeOrigin()
: phase_name_(""),
reducer_name_(""),
created_from_(std::numeric_limits<int64_t>::min()) {}
const char* phase_name_;
const char* reducer_name_;
OriginKind origin_kind_;
int64_t created_from_;
};
inline bool operator!=(const NodeOrigin& lhs, const NodeOrigin& rhs) {
return !(lhs == rhs);
}
class V8_EXPORT_PRIVATE NodeOriginTable final
: public NON_EXPORTED_BASE(ZoneObject) {
public:
class Scope final {
public:
Scope(NodeOriginTable* origins, const char* reducer_name, Node* node)
: origins_(origins), prev_origin_(NodeOrigin::Unknown()) {
if (origins) {
prev_origin_ = origins->current_origin_;
origins->current_origin_ =
NodeOrigin(origins->current_phase_name_, reducer_name, node->id());
}
}
~Scope() {
if (origins_) origins_->current_origin_ = prev_origin_;
}
Scope(const Scope&) = delete;
Scope& operator=(const Scope&) = delete;
private:
NodeOriginTable* const origins_;
NodeOrigin prev_origin_;
};
class PhaseScope final {
public:
PhaseScope(NodeOriginTable* origins, const char* phase_name)
: origins_(origins) {
if (origins != nullptr) {
prev_phase_name_ = origins->current_phase_name_;
origins->current_phase_name_ =
phase_name == nullptr ? "unnamed" : phase_name;
}
}
~PhaseScope() {
if (origins_) origins_->current_phase_name_ = prev_phase_name_;
}
PhaseScope(const PhaseScope&) = delete;
PhaseScope& operator=(const PhaseScope&) = delete;
private:
NodeOriginTable* const origins_;
const char* prev_phase_name_;
};
explicit NodeOriginTable(Graph* graph);
NodeOriginTable(const NodeOriginTable&) = delete;
NodeOriginTable& operator=(const NodeOriginTable&) = delete;
void AddDecorator();
void RemoveDecorator();
NodeOrigin GetNodeOrigin(Node* node) const;
void SetNodeOrigin(Node* node, const NodeOrigin& no);
void SetCurrentPosition(const NodeOrigin& no) { current_origin_ = no; }
void PrintJson(std::ostream& os) const;
private:
class Decorator;
Graph* const graph_;
Decorator* decorator_;
NodeOrigin current_origin_;
const char* current_phase_name_;
NodeAuxData<NodeOrigin, NodeOrigin::Unknown> table_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_NODE_ORIGIN_TABLE_H_