Allow a ParseInfo without a script for %SetCode users

src/compiler/pipeline.cc

 // 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.
 
 #include "src/compiler/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <memory>
 #include <sstream>
 
@@ skipping 527 matching lines @@
     json_of << "\",\n\"phases\":[";
   }
 
   return pipeline_statistics;
 }
 
 }  // namespace
 
 class PipelineCompilationJob final : public CompilationJob {
  public:
-  PipelineCompilationJob(Isolate* isolate, Handle<JSFunction> function)
+  PipelineCompilationJob(ParseInfo* parse_info, Handle<JSFunction> function)
       // Note that the CompilationInfo is not initialized at the time we pass it
       // to the CompilationJob constructor, but it is not dereferenced there.
-      : CompilationJob(isolate, &info_, "TurboFan"),
-        parse_info_(handle(function->shared())),
-        zone_stats_(isolate->allocator()),
-        info_(parse_info_.zone(), &parse_info_, function),
+      : CompilationJob(parse_info->isolate(), &info_, "TurboFan"),
+        parse_info_(parse_info),
+        zone_stats_(parse_info->isolate()->allocator()),
+        info_(parse_info_.get()->zone(), parse_info_.get(), function),
         pipeline_statistics_(CreatePipelineStatistics(info(), &zone_stats_)),
         data_(&zone_stats_, info(), pipeline_statistics_.get()),
         pipeline_(&data_),
         linkage_(nullptr) {}
 
  protected:
   Status PrepareJobImpl() final;
   Status ExecuteJobImpl() final;
   Status FinalizeJobImpl() final;
 
  private:
-  ParseInfo parse_info_;
+  std::unique_ptr<ParseInfo> parse_info_;
   ZoneStats zone_stats_;
   CompilationInfo info_;
   std::unique_ptr<PipelineStatistics> pipeline_statistics_;
   PipelineData data_;
   PipelineImpl pipeline_;
   Linkage* linkage_;
 
   DISALLOW_COPY_AND_ASSIGN(PipelineCompilationJob);
 };
 
@@ skipping 1166 matching lines @@
     json_of << "{\"function\":\"" << info->GetDebugName().get()
             << "\", \"source\":\"\",\n\"phases\":[";
   }
   // TODO(rossberg): Should this really be untyped?
   pipeline.RunPrintAndVerify("Machine", true);
 
   return pipeline.ScheduleAndGenerateCode(call_descriptor);
 }
 
 // static
-CompilationJob* Pipeline::NewCompilationJob(Handle<JSFunction> function) {
-  return new PipelineCompilationJob(function->GetIsolate(), function);
+CompilationJob* Pipeline::NewCompilationJob(Handle<JSFunction> function,
+                                            bool has_script) {
+  Handle<SharedFunctionInfo> shared = handle(function->shared());
+  ParseInfo* parse_info;
+  if (!has_script) {
+    parse_info = ParseInfo::AllocateWithoutScript(shared);
+  } else {
+    parse_info = new ParseInfo(shared);
+  }
+  return new PipelineCompilationJob(parse_info, function);
 }
 
 // static
 CompilationJob* Pipeline::NewWasmCompilationJob(
     CompilationInfo* info, JSGraph* jsgraph, CallDescriptor* descriptor,
     SourcePositionTable* source_positions,
     ZoneVector<trap_handler::ProtectedInstructionData>* protected_instructions,
     bool allow_signalling_nan) {
   return new PipelineWasmCompilationJob(
       info, jsgraph, descriptor, source_positions, protected_instructions,
@@ skipping 254 matching lines @@
   data->DeleteRegisterAllocationZone();
 }
 
 CompilationInfo* PipelineImpl::info() const { return data_->info(); }
 
 Isolate* PipelineImpl::isolate() const { return info()->isolate(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8