[turbofan] Don't run graph verifier on scheduled graphs.

src/compiler/pipeline.h

 // 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_PIPELINE_H_
 #define V8_COMPILER_PIPELINE_H_
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
 // Do not include anything from src/compiler here!
 #include "src/compiler.h"
@@ skipping 12 matching lines @@
 class PipelineData;
 class Schedule;
 
 class Pipeline {
  public:
   explicit Pipeline(CompilationInfo* info) : info_(info) {}
 
   // Run the entire pipeline and generate a handle to a code object.
   Handle<Code> GenerateCode();
 
-  // Run the pipeline on an code stub machine graph and generate code. A valid
-  // schedule must be provided.
+  // Run the pipeline on a machine graph and generate code. The {schedule} must
+  // be valid, hence the given {graph} does not need to be schedulable.
   static Handle<Code> GenerateCodeForCodeStub(Isolate* isolate,
                                               CallDescriptor* call_descriptor,
                                               Graph* graph, Schedule* schedule,
                                               Code::Kind kind,
                                               const char* bytecode_name);
 
   // Run the pipeline on a machine graph and generate code. If {schedule} is
   // {nullptr}, then compute a new schedule for code generation.
   static Handle<Code> GenerateCodeForTesting(CompilationInfo* info,
                                              Graph* graph,
@@ skipping 29 matching lines @@
   Handle<Code> ScheduleAndGenerateCode(CallDescriptor* call_descriptor);
   void AllocateRegisters(const RegisterConfiguration* config,
                          CallDescriptor* descriptor, bool run_verifier);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_PIPELINE_H_