[interpreter][stubs] Fixing issues found by machine graph verifier.

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 1759 matching lines @@
 
   // TODO(ishell): Always enable graph verification of stubs in debug mode
   // once all the issues are fixed.
   bool verify_stub_graph =
       DEBUG_BOOL && FLAG_csa_verify && data->info()->IsStub();
 
   if (verify_stub_graph || (FLAG_turbo_verify_machine_graph != nullptr &&
                             (!strcmp(FLAG_turbo_verify_machine_graph, "*") ||
                              !strcmp(FLAG_turbo_verify_machine_graph,
                                      data->info()->GetDebugName().get())))) {
+    if (FLAG_trace_csa_verify) {
+      AllowHandleDereference allow_deref;
+      CompilationInfo* info = data->info();
+      CodeTracer::Scope tracing_scope(info->isolate()->GetCodeTracer());
+      OFStream os(tracing_scope.file());
+      os << "--------------------------------------------------\n"
+         << "--- Verifying " << info->GetDebugName().get()
+         << " generated by TurboFan\n"
+         << "--------------------------------------------------\n"
+         << *data->schedule()
+         << "--------------------------------------------------\n"
+         << "--- End of " << info->GetDebugName().get()
+         << " generated by TurboFan\n"
+         << "--------------------------------------------------\n";
+    }
     Zone temp_zone(data->isolate()->allocator(), ZONE_NAME);
     MachineGraphVerifier::Run(data->graph(), data->schedule(), linkage,
                               data->info()->IsStub(), &temp_zone);
   }
 
   data->InitializeInstructionSequence(call_descriptor);
 
   data->InitializeFrameData(call_descriptor);
   // Select and schedule instructions covering the scheduled graph.
   Run<InstructionSelectionPhase>(linkage);
@@ skipping 190 matching lines @@
   data->DeleteRegisterAllocationZone();
 }
 
 CompilationInfo* PipelineImpl::info() const { return data_->info(); }
 
 Isolate* PipelineImpl::isolate() const { return info()->isolate(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8