graph-visualizer.cc 39 KB
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// Copyright 2013 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/compiler/graph-visualizer.h"

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#include <memory>
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#include <sstream>
#include <string>

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#include "src/compiler/all-nodes.h"
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#include "src/compiler/backend/register-allocator.h"
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#include "src/compiler/compiler-source-position-table.h"
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#include "src/compiler/graph.h"
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#include "src/compiler/node-origin-table.h"
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#include "src/compiler/node-properties.h"
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#include "src/compiler/node.h"
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#include "src/compiler/opcodes.h"
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#include "src/compiler/operator-properties.h"
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#include "src/compiler/operator.h"
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#include "src/compiler/schedule.h"
#include "src/compiler/scheduler.h"
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#include "src/interpreter/bytecodes.h"
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#include "src/objects/script-inl.h"
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#include "src/objects/shared-function-info.h"
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#include "src/optimized-compilation-info.h"
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#include "src/ostreams.h"
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#include "src/source-position.h"
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#include "src/vector.h"
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namespace v8 {
namespace internal {
namespace compiler {

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const char* get_cached_trace_turbo_filename(OptimizedCompilationInfo* info) {
  if (!info->trace_turbo_filename()) {
    info->set_trace_turbo_filename(
        GetVisualizerLogFileName(info, FLAG_trace_turbo_path, nullptr, "json"));
  }
  return info->trace_turbo_filename();
}

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TurboJsonFile::TurboJsonFile(OptimizedCompilationInfo* info,
                             std::ios_base::openmode mode)
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    : std::ofstream(get_cached_trace_turbo_filename(info), mode) {}

TurboJsonFile::~TurboJsonFile() { flush(); }
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TurboCfgFile::TurboCfgFile(Isolate* isolate)
    : std::ofstream(Isolate::GetTurboCfgFileName(isolate).c_str(),
                    std::ios_base::app) {}

TurboCfgFile::~TurboCfgFile() { flush(); }

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std::ostream& operator<<(std::ostream& out,
                         const SourcePositionAsJSON& asJSON) {
  asJSON.sp.PrintJson(out);
  return out;
}

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std::ostream& operator<<(std::ostream& out, const NodeOriginAsJSON& asJSON) {
  asJSON.no.PrintJson(out);
  return out;
}

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class JSONEscaped {
 public:
  explicit JSONEscaped(const std::ostringstream& os) : str_(os.str()) {}

  friend std::ostream& operator<<(std::ostream& os, const JSONEscaped& e) {
    for (char c : e.str_) PipeCharacter(os, c);
    return os;
  }

 private:
  static std::ostream& PipeCharacter(std::ostream& os, char c) {
    if (c == '"') return os << "\\\"";
    if (c == '\\') return os << "\\\\";
    if (c == '\b') return os << "\\b";
    if (c == '\f') return os << "\\f";
    if (c == '\n') return os << "\\n";
    if (c == '\r') return os << "\\r";
    if (c == '\t') return os << "\\t";
    return os << c;
  }

  const std::string str_;
};

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void JsonPrintFunctionSource(std::ostream& os, int source_id,
                             std::unique_ptr<char[]> function_name,
                             Handle<Script> script, Isolate* isolate,
                             Handle<SharedFunctionInfo> shared, bool with_key) {
  if (with_key) os << "\"" << source_id << "\" : ";

  os << "{ ";
  os << "\"sourceId\": " << source_id;
  os << ", \"functionName\": \"" << function_name.get() << "\" ";

  int start = 0;
  int end = 0;
  if (!script.is_null() && !script->IsUndefined(isolate) && !shared.is_null()) {
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    Object source_name = script->name();
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    os << ", \"sourceName\": \"";
    if (source_name->IsString()) {
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      std::ostringstream escaped_name;
      escaped_name << String::cast(source_name)->ToCString().get();
      os << JSONEscaped(escaped_name);
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    }
    os << "\"";
    {
      DisallowHeapAllocation no_allocation;
      start = shared->StartPosition();
      end = shared->EndPosition();
      os << ", \"sourceText\": \"";
      int len = shared->EndPosition() - start;
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      SubStringRange source(String::cast(script->source()), no_allocation,
                            start, len);
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      for (const auto& c : source) {
        os << AsEscapedUC16ForJSON(c);
      }
      os << "\"";
    }
  } else {
    os << ", \"sourceName\": \"\"";
    os << ", \"sourceText\": \"\"";
  }
  os << ", \"startPosition\": " << start;
  os << ", \"endPosition\": " << end;
  os << "}";
}

int SourceIdAssigner::GetIdFor(Handle<SharedFunctionInfo> shared) {
  for (unsigned i = 0; i < printed_.size(); i++) {
    if (printed_.at(i).is_identical_to(shared)) {
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      source_ids_.push_back(i);
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      return i;
    }
  }
  const int source_id = static_cast<int>(printed_.size());
  printed_.push_back(shared);
  source_ids_.push_back(source_id);
  return source_id;
}

namespace {

void JsonPrintInlinedFunctionInfo(
    std::ostream& os, int source_id, int inlining_id,
    const OptimizedCompilationInfo::InlinedFunctionHolder& h) {
  os << "\"" << inlining_id << "\" : ";
  os << "{ \"inliningId\" : " << inlining_id;
  os << ", \"sourceId\" : " << source_id;
  const SourcePosition position = h.position.position;
  if (position.IsKnown()) {
    os << ", \"inliningPosition\" : " << AsJSON(position);
  }
  os << "}";
}

}  // namespace

void JsonPrintAllSourceWithPositions(std::ostream& os,
                                     OptimizedCompilationInfo* info,
                                     Isolate* isolate) {
  AllowDeferredHandleDereference allow_deference_for_print_code;
  os << "\"sources\" : {";
  Handle<Script> script =
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      (info->shared_info().is_null() ||
       info->shared_info()->script() == Object())
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          ? Handle<Script>()
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          : handle(Script::cast(info->shared_info()->script()), isolate);
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  JsonPrintFunctionSource(os, -1,
                          info->shared_info().is_null()
                              ? std::unique_ptr<char[]>(new char[1]{0})
                              : info->shared_info()->DebugName()->ToCString(),
                          script, isolate, info->shared_info(), true);
  const auto& inlined = info->inlined_functions();
  SourceIdAssigner id_assigner(info->inlined_functions().size());
  for (unsigned id = 0; id < inlined.size(); id++) {
    os << ", ";
    Handle<SharedFunctionInfo> shared = inlined[id].shared_info;
    const int source_id = id_assigner.GetIdFor(shared);
    JsonPrintFunctionSource(os, source_id, shared->DebugName()->ToCString(),
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                            handle(Script::cast(shared->script()), isolate),
                            isolate, shared, true);
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  }
  os << "}, ";
  os << "\"inlinings\" : {";
  bool need_comma = false;
  for (unsigned id = 0; id < inlined.size(); id++) {
    if (need_comma) os << ", ";
    const int source_id = id_assigner.GetIdAt(id);
    JsonPrintInlinedFunctionInfo(os, source_id, id, inlined[id]);
    need_comma = true;
  }
  os << "}";
}

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std::unique_ptr<char[]> GetVisualizerLogFileName(OptimizedCompilationInfo* info,
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                                                 const char* optional_base_dir,
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                                                 const char* phase,
                                                 const char* suffix) {
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  EmbeddedVector<char, 256> filename(0);
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  std::unique_ptr<char[]> debug_name = info->GetDebugName();
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  int optimization_id = info->IsOptimizing() ? info->optimization_id() : 0;
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  if (strlen(debug_name.get()) > 0) {
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    SNPrintF(filename, "turbo-%s-%i", debug_name.get(), optimization_id);
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  } else if (info->has_shared_info()) {
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    SNPrintF(filename, "turbo-%p-%i",
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             reinterpret_cast<void*>(info->shared_info()->address()),
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             optimization_id);
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  } else {
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    SNPrintF(filename, "turbo-none-%i", optimization_id);
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  }
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  EmbeddedVector<char, 256> source_file(0);
  bool source_available = false;
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  if (FLAG_trace_file_names && info->has_shared_info() &&
      info->shared_info()->script()->IsScript()) {
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    Object source_name = Script::cast(info->shared_info()->script())->name();
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    if (source_name->IsString()) {
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      String str = String::cast(source_name);
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      if (str->length() > 0) {
        SNPrintF(source_file, "%s", str->ToCString().get());
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        std::replace(source_file.begin(),
                     source_file.begin() + source_file.length(), '/', '_');
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        source_available = true;
      }
    }
  }
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  std::replace(filename.begin(), filename.begin() + filename.length(), ' ',
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               '_');

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  EmbeddedVector<char, 256> base_dir;
  if (optional_base_dir != nullptr) {
    SNPrintF(base_dir, "%s%c", optional_base_dir,
             base::OS::DirectorySeparator());
  } else {
    base_dir[0] = '\0';
  }

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  EmbeddedVector<char, 256> full_filename;
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  if (phase == nullptr && !source_available) {
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    SNPrintF(full_filename, "%s%s.%s", base_dir.begin(), filename.begin(),
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             suffix);
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  } else if (phase != nullptr && !source_available) {
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    SNPrintF(full_filename, "%s%s-%s.%s", base_dir.begin(), filename.begin(),
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             phase, suffix);
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  } else if (phase == nullptr && source_available) {
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    SNPrintF(full_filename, "%s%s_%s.%s", base_dir.begin(), filename.begin(),
             source_file.begin(), suffix);
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  } else {
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    SNPrintF(full_filename, "%s%s_%s-%s.%s", base_dir.begin(), filename.begin(),
             source_file.begin(), phase, suffix);
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  }
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  char* buffer = new char[full_filename.length() + 1];
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  memcpy(buffer, full_filename.begin(), full_filename.length());
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  buffer[full_filename.length()] = '\0';
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  return std::unique_ptr<char[]>(buffer);
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}


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static int SafeId(Node* node) { return node == nullptr ? -1 : node->id(); }
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static const char* SafeMnemonic(Node* node) {
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  return node == nullptr ? "null" : node->op()->mnemonic();
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}
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class JSONGraphNodeWriter {
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 public:
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  JSONGraphNodeWriter(std::ostream& os, Zone* zone, const Graph* graph,
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                      const SourcePositionTable* positions,
                      const NodeOriginTable* origins)
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      : os_(os),
        all_(zone, graph, false),
        live_(zone, graph, true),
        positions_(positions),
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        origins_(origins),
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        first_node_(true) {}
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  void Print() {
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    for (Node* const node : all_.reachable) PrintNode(node);
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    os_ << "\n";
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  }
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  void PrintNode(Node* node) {
    if (first_node_) {
      first_node_ = false;
    } else {
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      os_ << ",\n";
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    }
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    std::ostringstream label, title, properties;
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    node->op()->PrintTo(label, Operator::PrintVerbosity::kSilent);
    node->op()->PrintTo(title, Operator::PrintVerbosity::kVerbose);
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    node->op()->PrintPropsTo(properties);
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    os_ << "{\"id\":" << SafeId(node) << ",\"label\":\"" << JSONEscaped(label)
        << "\""
        << ",\"title\":\"" << JSONEscaped(title) << "\""
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        << ",\"live\": " << (live_.IsLive(node) ? "true" : "false")
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        << ",\"properties\":\"" << JSONEscaped(properties) << "\"";
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    IrOpcode::Value opcode = node->opcode();
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    if (IrOpcode::IsPhiOpcode(opcode)) {
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      os_ << ",\"rankInputs\":[0," << NodeProperties::FirstControlIndex(node)
          << "]";
      os_ << ",\"rankWithInput\":[" << NodeProperties::FirstControlIndex(node)
          << "]";
    } else if (opcode == IrOpcode::kIfTrue || opcode == IrOpcode::kIfFalse ||
               opcode == IrOpcode::kLoop) {
      os_ << ",\"rankInputs\":[" << NodeProperties::FirstControlIndex(node)
          << "]";
    }
    if (opcode == IrOpcode::kBranch) {
      os_ << ",\"rankInputs\":[0]";
    }
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    if (positions_ != nullptr) {
      SourcePosition position = positions_->GetSourcePosition(node);
      if (position.IsKnown()) {
        os_ << ", \"sourcePosition\" : " << AsJSON(position);
      }
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    }
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    if (origins_) {
      NodeOrigin origin = origins_->GetNodeOrigin(node);
      if (origin.IsKnown()) {
        os_ << ", \"origin\" : " << AsJSON(origin);
      }
    }
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    os_ << ",\"opcode\":\"" << IrOpcode::Mnemonic(node->opcode()) << "\"";
    os_ << ",\"control\":" << (NodeProperties::IsControl(node) ? "true"
                                                               : "false");
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    os_ << ",\"opinfo\":\"" << node->op()->ValueInputCount() << " v "
        << node->op()->EffectInputCount() << " eff "
        << node->op()->ControlInputCount() << " ctrl in, "
        << node->op()->ValueOutputCount() << " v "
        << node->op()->EffectOutputCount() << " eff "
        << node->op()->ControlOutputCount() << " ctrl out\"";
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    if (NodeProperties::IsTyped(node)) {
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      Type type = NodeProperties::GetType(node);
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      std::ostringstream type_out;
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      type.PrintTo(type_out);
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      os_ << ",\"type\":\"" << JSONEscaped(type_out) << "\"";
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    }
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    os_ << "}";
  }
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 private:
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  std::ostream& os_;
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  AllNodes all_;
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  AllNodes live_;
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  const SourcePositionTable* positions_;
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  const NodeOriginTable* origins_;
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  bool first_node_;

  DISALLOW_COPY_AND_ASSIGN(JSONGraphNodeWriter);
};


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class JSONGraphEdgeWriter {
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 public:
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  JSONGraphEdgeWriter(std::ostream& os, Zone* zone, const Graph* graph)
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      : os_(os), all_(zone, graph, false), first_edge_(true) {}
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  void Print() {
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    for (Node* const node : all_.reachable) PrintEdges(node);
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    os_ << "\n";
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  }

  void PrintEdges(Node* node) {
    for (int i = 0; i < node->InputCount(); i++) {
      Node* input = node->InputAt(i);
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      if (input == nullptr) continue;
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      PrintEdge(node, i, input);
    }
  }
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  void PrintEdge(Node* from, int index, Node* to) {
    if (first_edge_) {
      first_edge_ = false;
    } else {
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      os_ << ",\n";
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    }
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    const char* edge_type = nullptr;
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    if (index < NodeProperties::FirstValueIndex(from)) {
      edge_type = "unknown";
    } else if (index < NodeProperties::FirstContextIndex(from)) {
      edge_type = "value";
    } else if (index < NodeProperties::FirstFrameStateIndex(from)) {
      edge_type = "context";
    } else if (index < NodeProperties::FirstEffectIndex(from)) {
      edge_type = "frame-state";
    } else if (index < NodeProperties::FirstControlIndex(from)) {
      edge_type = "effect";
    } else {
      edge_type = "control";
    }
    os_ << "{\"source\":" << SafeId(to) << ",\"target\":" << SafeId(from)
        << ",\"index\":" << index << ",\"type\":\"" << edge_type << "\"}";
  }
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 private:
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  std::ostream& os_;
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  AllNodes all_;
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  bool first_edge_;

  DISALLOW_COPY_AND_ASSIGN(JSONGraphEdgeWriter);
};

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std::ostream& operator<<(std::ostream& os, const GraphAsJSON& ad) {
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  AccountingAllocator allocator;
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  Zone tmp_zone(&allocator, ZONE_NAME);
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  os << "{\n\"nodes\":[";
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  JSONGraphNodeWriter(os, &tmp_zone, &ad.graph, ad.positions, ad.origins)
      .Print();
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  os << "],\n\"edges\":[";
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  JSONGraphEdgeWriter(os, &tmp_zone, &ad.graph).Print();
  os << "]}";
  return os;
}


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class GraphC1Visualizer {
 public:
  GraphC1Visualizer(std::ostream& os, Zone* zone);  // NOLINT

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  void PrintCompilation(const OptimizedCompilationInfo* info);
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  void PrintSchedule(const char* phase, const Schedule* schedule,
                     const SourcePositionTable* positions,
                     const InstructionSequence* instructions);
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  void PrintLiveRanges(const char* phase, const RegisterAllocationData* data);
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  Zone* zone() const { return zone_; }

 private:
  void PrintIndent();
  void PrintStringProperty(const char* name, const char* value);
  void PrintLongProperty(const char* name, int64_t value);
  void PrintIntProperty(const char* name, int value);
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  void PrintBlockProperty(const char* name, int rpo_number);
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  void PrintNodeId(Node* n);
  void PrintNode(Node* n);
  void PrintInputs(Node* n);
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  template <typename InputIterator>
  void PrintInputs(InputIterator* i, int count, const char* prefix);
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  void PrintType(Node* node);

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  void PrintLiveRange(const LiveRange* range, const char* type, int vreg);
  void PrintLiveRangeChain(const TopLevelLiveRange* range, const char* type);
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  class Tag final {
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   public:
    Tag(GraphC1Visualizer* visualizer, const char* name) {
      name_ = name;
      visualizer_ = visualizer;
      visualizer->PrintIndent();
      visualizer_->os_ << "begin_" << name << "\n";
      visualizer->indent_++;
    }

    ~Tag() {
      visualizer_->indent_--;
      visualizer_->PrintIndent();
      visualizer_->os_ << "end_" << name_ << "\n";
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      DCHECK_LE(0, visualizer_->indent_);
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    }

   private:
    GraphC1Visualizer* visualizer_;
    const char* name_;
  };

  std::ostream& os_;
  int indent_;
  Zone* zone_;

  DISALLOW_COPY_AND_ASSIGN(GraphC1Visualizer);
};


void GraphC1Visualizer::PrintIndent() {
  for (int i = 0; i < indent_; i++) {
    os_ << "  ";
  }
}


GraphC1Visualizer::GraphC1Visualizer(std::ostream& os, Zone* zone)
    : os_(os), indent_(0), zone_(zone) {}


void GraphC1Visualizer::PrintStringProperty(const char* name,
                                            const char* value) {
  PrintIndent();
  os_ << name << " \"" << value << "\"\n";
}


void GraphC1Visualizer::PrintLongProperty(const char* name, int64_t value) {
  PrintIndent();
  os_ << name << " " << static_cast<int>(value / 1000) << "\n";
}


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void GraphC1Visualizer::PrintBlockProperty(const char* name, int rpo_number) {
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  PrintIndent();
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  os_ << name << " \"B" << rpo_number << "\"\n";
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}


void GraphC1Visualizer::PrintIntProperty(const char* name, int value) {
  PrintIndent();
  os_ << name << " " << value << "\n";
}

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void GraphC1Visualizer::PrintCompilation(const OptimizedCompilationInfo* info) {
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  Tag tag(this, "compilation");
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  std::unique_ptr<char[]> name = info->GetDebugName();
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  if (info->IsOptimizing()) {
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    PrintStringProperty("name", name.get());
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    PrintIndent();
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    os_ << "method \"" << name.get() << ":" << info->optimization_id()
        << "\"\n";
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  } else {
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    PrintStringProperty("name", name.get());
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    PrintStringProperty("method", "stub");
  }
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  PrintLongProperty(
      "date",
      static_cast<int64_t>(V8::GetCurrentPlatform()->CurrentClockTimeMillis()));
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}


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void GraphC1Visualizer::PrintNodeId(Node* n) { os_ << "n" << SafeId(n); }
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void GraphC1Visualizer::PrintNode(Node* n) {
  PrintNodeId(n);
  os_ << " " << *n->op() << " ";
  PrintInputs(n);
}


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template <typename InputIterator>
void GraphC1Visualizer::PrintInputs(InputIterator* i, int count,
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                                    const char* prefix) {
  if (count > 0) {
    os_ << prefix;
  }
  while (count > 0) {
    os_ << " ";
    PrintNodeId(**i);
    ++(*i);
    count--;
  }
}


void GraphC1Visualizer::PrintInputs(Node* node) {
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  auto i = node->inputs().begin();
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  PrintInputs(&i, node->op()->ValueInputCount(), " ");
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  PrintInputs(&i, OperatorProperties::GetContextInputCount(node->op()),
              " Ctx:");
  PrintInputs(&i, OperatorProperties::GetFrameStateInputCount(node->op()),
              " FS:");
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  PrintInputs(&i, node->op()->EffectInputCount(), " Eff:");
  PrintInputs(&i, node->op()->ControlInputCount(), " Ctrl:");
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}


void GraphC1Visualizer::PrintType(Node* node) {
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  if (NodeProperties::IsTyped(node)) {
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    Type type = NodeProperties::GetType(node);
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    os_ << " type:" << type;
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  }
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}


void GraphC1Visualizer::PrintSchedule(const char* phase,
                                      const Schedule* schedule,
                                      const SourcePositionTable* positions,
                                      const InstructionSequence* instructions) {
  Tag tag(this, "cfg");
  PrintStringProperty("name", phase);
  const BasicBlockVector* rpo = schedule->rpo_order();
  for (size_t i = 0; i < rpo->size(); i++) {
    BasicBlock* current = (*rpo)[i];
    Tag block_tag(this, "block");
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    PrintBlockProperty("name", current->rpo_number());
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    PrintIntProperty("from_bci", -1);
    PrintIntProperty("to_bci", -1);

    PrintIndent();
    os_ << "predecessors";
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    for (BasicBlock* predecessor : current->predecessors()) {
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      os_ << " \"B" << predecessor->rpo_number() << "\"";
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    }
    os_ << "\n";

    PrintIndent();
    os_ << "successors";
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    for (BasicBlock* successor : current->successors()) {
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      os_ << " \"B" << successor->rpo_number() << "\"";
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    }
    os_ << "\n";

    PrintIndent();
    os_ << "xhandlers\n";

    PrintIndent();
    os_ << "flags\n";

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    if (current->dominator() != nullptr) {
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      PrintBlockProperty("dominator", current->dominator()->rpo_number());
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    }

    PrintIntProperty("loop_depth", current->loop_depth());

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    const InstructionBlock* instruction_block =
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        instructions->InstructionBlockAt(
            RpoNumber::FromInt(current->rpo_number()));
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    if (instruction_block->code_start() >= 0) {
      int first_index = instruction_block->first_instruction_index();
      int last_index = instruction_block->last_instruction_index();
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      PrintIntProperty(
          "first_lir_id",
623
          LifetimePosition::GapFromInstructionIndex(first_index).value());
624 625
      PrintIntProperty("last_lir_id",
                       LifetimePosition::InstructionFromInstructionIndex(
626
                           last_index).value());
627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
    }

    {
      Tag states_tag(this, "states");
      Tag locals_tag(this, "locals");
      int total = 0;
      for (BasicBlock::const_iterator i = current->begin(); i != current->end();
           ++i) {
        if ((*i)->opcode() == IrOpcode::kPhi) total++;
      }
      PrintIntProperty("size", total);
      PrintStringProperty("method", "None");
      int index = 0;
      for (BasicBlock::const_iterator i = current->begin(); i != current->end();
           ++i) {
        if ((*i)->opcode() != IrOpcode::kPhi) continue;
        PrintIndent();
        os_ << index << " ";
        PrintNodeId(*i);
        os_ << " [";
        PrintInputs(*i);
        os_ << "]\n";
        index++;
      }
    }

    {
      Tag HIR_tag(this, "HIR");
      for (BasicBlock::const_iterator i = current->begin(); i != current->end();
           ++i) {
        Node* node = *i;
        if (node->opcode() == IrOpcode::kPhi) continue;
        int uses = node->UseCount();
        PrintIndent();
        os_ << "0 " << uses << " ";
        PrintNode(node);
        if (FLAG_trace_turbo_types) {
          os_ << " ";
          PrintType(node);
        }
667
        if (positions != nullptr) {
668
          SourcePosition position = positions->GetSourcePosition(node);
669
          if (position.IsKnown()) {
670
            os_ << " pos:";
671 672 673
            if (position.isInlined()) {
              os_ << "inlining(" << position.InliningId() << "),";
            }
674
            os_ << position.ScriptOffset();
675 676 677 678 679 680 681 682 683
          }
        }
        os_ << " <|@\n";
      }

      BasicBlock::Control control = current->control();
      if (control != BasicBlock::kNone) {
        PrintIndent();
        os_ << "0 0 ";
684
        if (current->control_input() != nullptr) {
685 686
          PrintNode(current->control_input());
        } else {
687
          os_ << -1 - current->rpo_number() << " Goto";
688 689
        }
        os_ << " ->";
690
        for (BasicBlock* successor : current->successors()) {
691
          os_ << " B" << successor->rpo_number();
692
        }
693
        if (FLAG_trace_turbo_types && current->control_input() != nullptr) {
694 695 696 697 698 699 700
          os_ << " ";
          PrintType(current->control_input());
        }
        os_ << " <|@\n";
      }
    }

701
    if (instructions != nullptr) {
702
      Tag LIR_tag(this, "LIR");
703 704
      for (int j = instruction_block->first_instruction_index();
           j <= instruction_block->last_instruction_index(); j++) {
705
        PrintIndent();
706
        os_ << j << " " << *instructions->InstructionAt(j) << " <|@\n";
707 708 709 710 711 712
      }
    }
  }
}


713 714
void GraphC1Visualizer::PrintLiveRanges(const char* phase,
                                        const RegisterAllocationData* data) {
715 716 717
  Tag tag(this, "intervals");
  PrintStringProperty("name", phase);

718
  for (const TopLevelLiveRange* range : data->fixed_double_live_ranges()) {
719
    PrintLiveRangeChain(range, "fixed");
720 721
  }

722
  for (const TopLevelLiveRange* range : data->fixed_live_ranges()) {
723
    PrintLiveRangeChain(range, "fixed");
724 725
  }

726
  for (const TopLevelLiveRange* range : data->live_ranges()) {
727 728 729 730
    PrintLiveRangeChain(range, "object");
  }
}

731
void GraphC1Visualizer::PrintLiveRangeChain(const TopLevelLiveRange* range,
732
                                            const char* type) {
733
  if (range == nullptr || range->IsEmpty()) return;
734
  int vreg = range->vreg();
735 736
  for (const LiveRange* child = range; child != nullptr;
       child = child->next()) {
737
    PrintLiveRange(child, type, vreg);
738 739 740
  }
}

741
void GraphC1Visualizer::PrintLiveRange(const LiveRange* range, const char* type,
742
                                       int vreg) {
743
  if (range != nullptr && !range->IsEmpty()) {
744
    PrintIndent();
745
    os_ << vreg << ":" << range->relative_id() << " " << type;
746
    if (range->HasRegisterAssigned()) {
747
      AllocatedOperand op = AllocatedOperand::cast(range->GetAssignedOperand());
748
      if (op.IsRegister()) {
749
        os_ << " \"" << Register::from_code(op.register_code()) << "\"";
750
      } else if (op.IsDoubleRegister()) {
751
        os_ << " \"" << DoubleRegister::from_code(op.register_code()) << "\"";
752
      } else {
753
        DCHECK(op.IsFloatRegister());
754
        os_ << " \"" << FloatRegister::from_code(op.register_code()) << "\"";
755
      }
756
    } else if (range->spilled()) {
757
      const TopLevelLiveRange* top = range->TopLevel();
758
      int index = -1;
759
      if (top->HasSpillRange()) {
760
        index = kMaxInt;  // This hasn't been set yet.
761 762 763 764
      } else if (top->GetSpillOperand()->IsConstant()) {
        os_ << " \"const(nostack):"
            << ConstantOperand::cast(top->GetSpillOperand())->virtual_register()
            << "\"";
765
      } else {
766
        index = AllocatedOperand::cast(top->GetSpillOperand())->index();
767 768 769
        if (IsFloatingPoint(top->representation())) {
          os_ << " \"fp_stack:" << index << "\"";
        } else {
770 771
          os_ << " \"stack:" << index << "\"";
        }
772 773
      }
    }
774

775 776 777 778 779
    // The toplevel range might be a splinter. Pre-resolve those here so that
    // they have a proper parent.
    const TopLevelLiveRange* parent = range->TopLevel();
    if (parent->IsSplinter()) parent = parent->splintered_from();
    os_ << " " << parent->vreg() << ":" << parent->relative_id();
780 781

    // TODO(herhut) Find something useful to print for the hint field
782 783 784 785 786
    if (range->get_bundle() != nullptr) {
      os_ << " B" << range->get_bundle()->id();
    } else {
      os_ << " unknown";
    }
787

788 789
    for (const UseInterval* interval = range->first_interval();
         interval != nullptr; interval = interval->next()) {
790 791
      os_ << " [" << interval->start().value() << ", "
          << interval->end().value() << "[";
792 793 794
    }

    UsePosition* current_pos = range->first_pos();
795
    while (current_pos != nullptr) {
796
      if (current_pos->RegisterIsBeneficial() || FLAG_trace_all_uses) {
797
        os_ << " " << current_pos->pos().value() << " M";
798 799 800 801 802 803 804 805 806 807
      }
      current_pos = current_pos->next();
    }

    os_ << " \"\"\n";
  }
}


std::ostream& operator<<(std::ostream& os, const AsC1VCompilation& ac) {
808
  AccountingAllocator allocator;
809
  Zone tmp_zone(&allocator, ZONE_NAME);
810 811 812 813 814 815
  GraphC1Visualizer(os, &tmp_zone).PrintCompilation(ac.info_);
  return os;
}


std::ostream& operator<<(std::ostream& os, const AsC1V& ac) {
816
  AccountingAllocator allocator;
817
  Zone tmp_zone(&allocator, ZONE_NAME);
818 819 820 821 822 823
  GraphC1Visualizer(os, &tmp_zone)
      .PrintSchedule(ac.phase_, ac.schedule_, ac.positions_, ac.instructions_);
  return os;
}


824 825
std::ostream& operator<<(std::ostream& os,
                         const AsC1VRegisterAllocationData& ac) {
826
  AccountingAllocator allocator;
827
  Zone tmp_zone(&allocator, ZONE_NAME);
828
  GraphC1Visualizer(os, &tmp_zone).PrintLiveRanges(ac.phase_, ac.data_);
829 830
  return os;
}
831 832 833 834 835 836

const int kUnvisited = 0;
const int kOnStack = 1;
const int kVisited = 2;

std::ostream& operator<<(std::ostream& os, const AsRPO& ar) {
837
  AccountingAllocator allocator;
838
  Zone local_zone(&allocator, ZONE_NAME);
839 840 841 842 843 844 845 846 847 848 849 850 851 852

  // Do a post-order depth-first search on the RPO graph. For every node,
  // print:
  //
  //   - the node id
  //   - the operator mnemonic
  //   - in square brackets its parameter (if present)
  //   - in parentheses the list of argument ids and their mnemonics
  //   - the node type (if it is typed)

  // Post-order guarantees that all inputs of a node will be printed before
  // the node itself, if there are no cycles. Any cycles are broken
  // arbitrarily.

853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871
  ZoneVector<byte> state(ar.graph.NodeCount(), kUnvisited, &local_zone);
  ZoneStack<Node*> stack(&local_zone);

  stack.push(ar.graph.end());
  state[ar.graph.end()->id()] = kOnStack;
  while (!stack.empty()) {
    Node* n = stack.top();
    bool pop = true;
    for (Node* const i : n->inputs()) {
      if (state[i->id()] == kUnvisited) {
        state[i->id()] = kOnStack;
        stack.push(i);
        pop = false;
        break;
      }
    }
    if (pop) {
      state[n->id()] = kVisited;
      stack.pop();
872
      os << "#" << n->id() << ":" << *n->op() << "(";
873
      // Print the inputs.
874 875 876 877 878
      int j = 0;
      for (Node* const i : n->inputs()) {
        if (j++ > 0) os << ", ";
        os << "#" << SafeId(i) << ":" << SafeMnemonic(i);
      }
879
      os << ")";
880
      // Print the node type, if any.
881
      if (NodeProperties::IsTyped(n)) {
882
        os << "  [Type: " << NodeProperties::GetType(n) << "]";
883 884
      }
      os << std::endl;
885 886 887 888
    }
  }
  return os;
}
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910

namespace {

void PrintIndent(std::ostream& os, int indent) {
  os << "     ";
  for (int i = 0; i < indent; i++) {
    os << ". ";
  }
}

void PrintScheduledNode(std::ostream& os, int indent, Node* n) {
  PrintIndent(os, indent);
  os << "#" << n->id() << ":" << *n->op() << "(";
  // Print the inputs.
  int j = 0;
  for (Node* const i : n->inputs()) {
    if (j++ > 0) os << ", ";
    os << "#" << SafeId(i) << ":" << SafeMnemonic(i);
  }
  os << ")";
  // Print the node type, if any.
  if (NodeProperties::IsTyped(n)) {
911
    os << "  [Type: " << NodeProperties::GetType(n) << "]";
912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958
  }
}

void PrintScheduledGraph(std::ostream& os, const Schedule* schedule) {
  const BasicBlockVector* rpo = schedule->rpo_order();
  for (size_t i = 0; i < rpo->size(); i++) {
    BasicBlock* current = (*rpo)[i];
    int indent = current->loop_depth();

    os << "  + Block B" << current->rpo_number() << " (pred:";
    for (BasicBlock* predecessor : current->predecessors()) {
      os << " B" << predecessor->rpo_number();
    }
    if (current->IsLoopHeader()) {
      os << ", loop until B" << current->loop_end()->rpo_number();
    } else if (current->loop_header()) {
      os << ", in loop B" << current->loop_header()->rpo_number();
    }
    os << ")" << std::endl;

    for (BasicBlock::const_iterator i = current->begin(); i != current->end();
         ++i) {
      Node* node = *i;
      PrintScheduledNode(os, indent, node);
      os << std::endl;
    }

    if (current->SuccessorCount() > 0) {
      if (current->control_input() != nullptr) {
        PrintScheduledNode(os, indent, current->control_input());
      } else {
        PrintIndent(os, indent);
        os << "Goto";
      }
      os << " ->";

      bool isFirst = true;
      for (BasicBlock* successor : current->successors()) {
        if (isFirst) {
          isFirst = false;
        } else {
          os << ",";
        }
        os << " B" << successor->rpo_number();
      }
      os << std::endl;
    } else {
959
      DCHECK_NULL(current->control_input());
960 961 962 963 964 965 966 967 968 969 970
    }
  }
}

}  // namespace

std::ostream& operator<<(std::ostream& os, const AsScheduledGraph& scheduled) {
  PrintScheduledGraph(os, scheduled.schedule);
  return os;
}

971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
std::ostream& operator<<(std::ostream& os, const InstructionOperandAsJSON& o) {
  const InstructionOperand* op = o.op_;
  const InstructionSequence* code = o.code_;
  os << "{";
  switch (op->kind()) {
    case InstructionOperand::UNALLOCATED: {
      const UnallocatedOperand* unalloc = UnallocatedOperand::cast(op);
      os << "\"type\": \"unallocated\", ";
      os << "\"text\": \"v" << unalloc->virtual_register() << "\"";
      if (unalloc->basic_policy() == UnallocatedOperand::FIXED_SLOT) {
        os << ",\"tooltip\": \"FIXED_SLOT: " << unalloc->fixed_slot_index()
           << "\"";
        break;
      }
      switch (unalloc->extended_policy()) {
        case UnallocatedOperand::NONE:
          break;
        case UnallocatedOperand::FIXED_REGISTER: {
          os << ",\"tooltip\": \"FIXED_REGISTER: "
990
             << Register::from_code(unalloc->fixed_register_index()) << "\"";
991 992 993 994
          break;
        }
        case UnallocatedOperand::FIXED_FP_REGISTER: {
          os << ",\"tooltip\": \"FIXED_FP_REGISTER: "
995
             << DoubleRegister::from_code(unalloc->fixed_register_index())
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
             << "\"";
          break;
        }
        case UnallocatedOperand::MUST_HAVE_REGISTER: {
          os << ",\"tooltip\": \"MUST_HAVE_REGISTER\"";
          break;
        }
        case UnallocatedOperand::MUST_HAVE_SLOT: {
          os << ",\"tooltip\": \"MUST_HAVE_SLOT\"";
          break;
        }
        case UnallocatedOperand::SAME_AS_FIRST_INPUT: {
          os << ",\"tooltip\": \"SAME_AS_FIRST_INPUT\"";
          break;
        }
        case UnallocatedOperand::REGISTER_OR_SLOT: {
          os << ",\"tooltip\": \"REGISTER_OR_SLOT\"";
          break;
        }
        case UnallocatedOperand::REGISTER_OR_SLOT_OR_CONSTANT: {
          os << ",\"tooltip\": \"REGISTER_OR_SLOT_OR_CONSTANT\"";
          break;
        }
      }
      break;
    }
    case InstructionOperand::CONSTANT: {
      int vreg = ConstantOperand::cast(op)->virtual_register();
      os << "\"type\": \"constant\", ";
      os << "\"text\": \"v" << vreg << "\",";
      os << "\"tooltip\": \"";
      std::stringstream tooltip;
      tooltip << code->GetConstant(vreg);
      for (const auto& c : tooltip.str()) {
        os << AsEscapedUC16ForJSON(c);
      }
      os << "\"";
      break;
    }
    case InstructionOperand::IMMEDIATE: {
      os << "\"type\": \"immediate\", ";
      const ImmediateOperand* imm = ImmediateOperand::cast(op);
      switch (imm->type()) {
        case ImmediateOperand::INLINE: {
          os << "\"text\": \"#" << imm->inline_value() << "\"";
          break;
        }
        case ImmediateOperand::INDEXED: {
          int index = imm->indexed_value();
          os << "\"text\": \"imm:" << index << "\",";
          os << "\"tooltip\": \"";
          std::stringstream tooltip;
          tooltip << code->GetImmediate(imm);
          for (const auto& c : tooltip.str()) {
            os << AsEscapedUC16ForJSON(c);
          }
          os << "\"";
          break;
        }
      }
      break;
    }
    case InstructionOperand::EXPLICIT:
    case InstructionOperand::ALLOCATED: {
      const LocationOperand* allocated = LocationOperand::cast(op);
      os << "\"type\": ";
      if (allocated->IsExplicit()) {
        os << "\"explicit\", ";
      } else {
        os << "\"allocated\", ";
      }
      os << "\"text\": \"";
      if (op->IsStackSlot()) {
        os << "stack:" << allocated->index();
      } else if (op->IsFPStackSlot()) {
        os << "fp_stack:" << allocated->index();
      } else if (op->IsRegister()) {
1073 1074 1075
        if (allocated->register_code() < Register::kNumRegisters) {
          os << Register::from_code(allocated->register_code());
        } else {
1076
          os << Register::GetSpecialRegisterName(allocated->register_code());
1077
        }
1078
      } else if (op->IsDoubleRegister()) {
1079
        os << DoubleRegister::from_code(allocated->register_code());
1080
      } else if (op->IsFloatRegister()) {
1081
        os << FloatRegister::from_code(allocated->register_code());
1082 1083
      } else {
        DCHECK(op->IsSimd128Register());
1084
        os << Simd128Register::from_code(allocated->register_code());
1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
      }
      os << "\",";
      os << "\"tooltip\": \""
         << MachineReprToString(allocated->representation()) << "\"";
      break;
    }
    case InstructionOperand::INVALID:
      UNREACHABLE();
  }
  os << "}";
  return os;
}

1098 1099
std::ostream& operator<<(std::ostream& os, const InstructionAsJSON& i_json) {
  const Instruction* instr = i_json.instr_;
1100 1101

  os << "{";
1102
  os << "\"id\": " << i_json.index_ << ",";
1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
  os << "\"opcode\": \"" << ArchOpcodeField::decode(instr->opcode()) << "\",";
  os << "\"flags\": \"";
  FlagsMode fm = FlagsModeField::decode(instr->opcode());
  AddressingMode am = AddressingModeField::decode(instr->opcode());
  if (am != kMode_None) {
    os << " : " << AddressingModeField::decode(instr->opcode());
  }
  if (fm != kFlags_none) {
    os << " && " << fm << " if "
       << FlagsConditionField::decode(instr->opcode());
  }
  os << "\",";

  os << "\"gaps\": [";
  for (int i = Instruction::FIRST_GAP_POSITION;
       i <= Instruction::LAST_GAP_POSITION; i++) {
    if (i != Instruction::FIRST_GAP_POSITION) os << ",";
    os << "[";
    const ParallelMove* pm = instr->parallel_moves()[i];
    if (pm == nullptr) {
      os << "]";
      continue;
    }
    bool first = true;
    for (MoveOperands* move : *pm) {
      if (move->IsEliminated()) continue;
      if (!first) os << ",";
      first = false;
1131 1132 1133
      os << "[" << InstructionOperandAsJSON{&move->destination(), i_json.code_}
         << "," << InstructionOperandAsJSON{&move->source(), i_json.code_}
         << "]";
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
    }
    os << "]";
  }
  os << "],";

  os << "\"outputs\": [";
  bool need_comma = false;
  for (size_t i = 0; i < instr->OutputCount(); i++) {
    if (need_comma) os << ",";
    need_comma = true;
1144
    os << InstructionOperandAsJSON{instr->OutputAt(i), i_json.code_};
1145 1146 1147 1148 1149 1150 1151 1152
  }
  os << "],";

  os << "\"inputs\": [";
  need_comma = false;
  for (size_t i = 0; i < instr->InputCount(); i++) {
    if (need_comma) os << ",";
    need_comma = true;
1153
    os << InstructionOperandAsJSON{instr->InputAt(i), i_json.code_};
1154 1155 1156 1157 1158 1159 1160 1161
  }
  os << "],";

  os << "\"temps\": [";
  need_comma = false;
  for (size_t i = 0; i < instr->TempCount(); i++) {
    if (need_comma) os << ",";
    need_comma = true;
1162
    os << InstructionOperandAsJSON{instr->TempAt(i), i_json.code_};
1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
  }
  os << "]";
  os << "}";

  return os;
}

std::ostream& operator<<(std::ostream& os, const InstructionBlockAsJSON& b) {
  const InstructionBlock* block = b.block_;
  const InstructionSequence* code = b.code_;
  os << "{";
  os << "\"id\": " << block->rpo_number() << ",";
1175 1176
  os << "\"deferred\": " << (block->IsDeferred() ? "true" : "false");
  os << ",";
1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
  os << "\"loop_header\": " << block->IsLoopHeader() << ",";
  if (block->IsLoopHeader()) {
    os << "\"loop_end\": " << block->loop_end() << ",";
  }
  os << "\"predecessors\": [";
  bool need_comma = false;
  for (RpoNumber pred : block->predecessors()) {
    if (need_comma) os << ",";
    need_comma = true;
    os << pred.ToInt();
  }
  os << "],";
  os << "\"successors\": [";
  need_comma = false;
  for (RpoNumber succ : block->successors()) {
    if (need_comma) os << ",";
    need_comma = true;
    os << succ.ToInt();
  }
  os << "],";
  os << "\"phis\": [";
  bool needs_comma = false;
1199
  InstructionOperandAsJSON json_op = {nullptr, code};
1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216
  for (const PhiInstruction* phi : block->phis()) {
    if (needs_comma) os << ",";
    needs_comma = true;
    json_op.op_ = &phi->output();
    os << "{\"output\" : " << json_op << ",";
    os << "\"operands\": [";
    bool op_needs_comma = false;
    for (int input : phi->operands()) {
      if (op_needs_comma) os << ",";
      op_needs_comma = true;
      os << "\"v" << input << "\"";
    }
    os << "]}";
  }
  os << "],";

  os << "\"instructions\": [";
1217
  InstructionAsJSON json_instr = {-1, nullptr, code};
1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
  need_comma = false;
  for (int j = block->first_instruction_index();
       j <= block->last_instruction_index(); j++) {
    if (need_comma) os << ",";
    need_comma = true;
    json_instr.index_ = j;
    json_instr.instr_ = code->InstructionAt(j);
    os << json_instr;
  }
  os << "]";
  os << "}";

  return os;
}

std::ostream& operator<<(std::ostream& os, const InstructionSequenceAsJSON& s) {
  const InstructionSequence* code = s.sequence_;

  os << "\"blocks\": [";

  bool need_comma = false;
  for (int i = 0; i < code->InstructionBlockCount(); i++) {
    if (need_comma) os << ",";
    need_comma = true;
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    os << InstructionBlockAsJSON{
        code->InstructionBlockAt(RpoNumber::FromInt(i)), code};
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  }
  os << "]";

  return os;
}

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}  // namespace compiler
}  // namespace internal
}  // namespace v8