diff --git a/src/compiler/graph-visualizer.cc b/src/compiler/graph-visualizer.cc
index 20ebabe2c0..abdd1c9210 100644
--- a/src/compiler/graph-visualizer.cc
+++ b/src/compiler/graph-visualizer.cc
@@ -24,6 +24,34 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
+
+FILE* OpenVisualizerLogFile(CompilationInfo* info, const char* phase,
+                            const char* suffix, const char* mode) {
+  EmbeddedVector<char, 256> filename;
+  SmartArrayPointer<char> function_name;
+  if (!info->shared_info().is_null()) {
+    function_name = info->shared_info()->DebugName()->ToCString();
+    if (strlen(function_name.get()) > 0) {
+      SNPrintF(filename, "turbo-%s", function_name.get());
+    } else {
+      SNPrintF(filename, "turbo-%p", static_cast<void*>(info));
+    }
+  } else {
+    SNPrintF(filename, "turbo-none-%s", phase);
+  }
+  std::replace(filename.start(), filename.start() + filename.length(), ' ',
+               '_');
+
+  EmbeddedVector<char, 256> full_filename;
+  if (phase == NULL) {
+    SNPrintF(full_filename, "%s.%s", filename.start(), suffix);
+  } else {
+    SNPrintF(full_filename, "%s-%s.%s", filename.start(), phase, suffix);
+  }
+  return base::OS::FOpen(full_filename.start(), mode);
+}
+
+
 static int SafeId(Node* node) { return node == NULL ? -1 : node->id(); }
 static const char* SafeMnemonic(Node* node) {
   return node == NULL ? "null" : node->op()->mnemonic();
diff --git a/src/compiler/graph-visualizer.h b/src/compiler/graph-visualizer.h
index 611351244b..17094c23c5 100644
--- a/src/compiler/graph-visualizer.h
+++ b/src/compiler/graph-visualizer.h
@@ -20,6 +20,8 @@ class RegisterAllocator;
 class Schedule;
 class SourcePositionTable;
 
+FILE* OpenVisualizerLogFile(CompilationInfo* info, const char* phase,
+                            const char* suffix, const char* mode);
 
 struct AsDOT {
   explicit AsDOT(const Graph& g) : graph(g) {}
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index e0667edd93..a6d46657b8 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -691,35 +691,6 @@ struct GenerateCodePhase {
 };
 
 
-namespace {
-
-FILE* OpenLogFile(CompilationInfo* info, const char* phase, const char* suffix,
-                  const char* mode) {
-  EmbeddedVector<char, 256> filename;
-  SmartArrayPointer<char> function_name;
-  if (!info->shared_info().is_null()) {
-    function_name = info->shared_info()->DebugName()->ToCString();
-    if (strlen(function_name.get()) > 0) {
-      SNPrintF(filename, "turbo-%s", function_name.get());
-    } else {
-      SNPrintF(filename, "turbo-%p", static_cast<void*>(info));
-    }
-  } else {
-    SNPrintF(filename, "turbo-none-%s", phase);
-  }
-  std::replace(filename.start(), filename.start() + filename.length(), ' ',
-               '_');
-
-  EmbeddedVector<char, 256> full_filename;
-  if (phase == NULL) {
-    SNPrintF(full_filename, "%s.%s", filename.start(), suffix);
-  } else {
-    SNPrintF(full_filename, "%s-%s.%s", filename.start(), phase, suffix);
-  }
-  return base::OS::FOpen(full_filename.start(), mode);
-}
-}
-
 struct PrintGraphPhase {
   static const char* phase_name() { return nullptr; }
 
@@ -728,7 +699,7 @@ struct PrintGraphPhase {
     Graph* graph = data->graph();
 
     {  // Print dot.
-      FILE* dot_file = OpenLogFile(info, phase, "dot", "w+");
+      FILE* dot_file = OpenVisualizerLogFile(info, phase, "dot", "w+");
       if (dot_file == nullptr) return;
       OFStream dot_of(dot_file);
       dot_of << AsDOT(*graph);
@@ -736,7 +707,7 @@ struct PrintGraphPhase {
     }
 
     {  // Print JSON.
-      FILE* json_file = OpenLogFile(info, NULL, "json", "a+");
+      FILE* json_file = OpenVisualizerLogFile(info, NULL, "json", "a+");
       if (json_file == nullptr) return;
       OFStream json_of(json_file);
       json_of << "{\"name\":\"" << phase << "\",\"type\":\"graph\",\"data\":"
@@ -808,7 +779,7 @@ Handle<Code> Pipeline::GenerateCode() {
   }
 
   if (FLAG_trace_turbo) {
-    FILE* json_file = OpenLogFile(info(), NULL, "json", "w+");
+    FILE* json_file = OpenVisualizerLogFile(info(), NULL, "json", "w+");
     if (json_file != nullptr) {
       OFStream json_of(json_file);
       Handle<Script> script = info()->script();
@@ -947,7 +918,7 @@ Handle<Code> Pipeline::GenerateCode() {
   v8::internal::CodeGenerator::PrintCode(code, info());
 
   if (FLAG_trace_turbo) {
-    FILE* json_file = OpenLogFile(info(), NULL, "json", "a+");
+    FILE* json_file = OpenVisualizerLogFile(info(), NULL, "json", "a+");
     if (json_file != nullptr) {
       OFStream json_of(json_file);
       json_of
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 972cd437f8..e4a9df6dda 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -400,6 +400,7 @@ DEFINE_BOOL(turbo_stats, false, "print TurboFan statistics")
 DEFINE_BOOL(turbo_types, true, "use typed lowering in TurboFan")
 DEFINE_BOOL(turbo_source_positions, false,
             "track source code positions when building TurboFan IR")
+DEFINE_IMPLICATION(trace_turbo, turbo_source_positions)
 DEFINE_BOOL(context_specialization, false,
             "enable context specialization in TurboFan")
 DEFINE_BOOL(turbo_deoptimization, false, "enable deoptimization in TurboFan")
diff --git a/src/ostreams.cc b/src/ostreams.cc
index 4f28141d71..b11332dafc 100644
--- a/src/ostreams.cc
+++ b/src/ostreams.cc
@@ -70,7 +70,6 @@ std::ostream& operator<<(std::ostream& os, const AsEscapedUC16ForJSON& c) {
   if (c.value == '\n') return os << "\\n";
   if (c.value == '\r') return os << "\\r";
   if (c.value == '\"') return os << "\\\"";
-  if (c.value == '\'') return os << "\\\'";
   return PrintUC16(os, c.value, IsOK);
 }