[stubs] Enable machine graph verification for CodeStubAssembler and friends by default in debug mode

src/code-stubs-hydrogen.cc

 // Copyright 2012 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/code-stubs.h"
 
 #include <memory>
 
 #include "src/bailout-reason.h"
 #include "src/code-factory.h"
@@ skipping 268 matching lines @@
     case 4:
       assembler.TailCallRuntime(descriptor->miss_handler_id(),
                                 assembler.Parameter(4), assembler.Parameter(0),
                                 assembler.Parameter(1), assembler.Parameter(2),
                                 assembler.Parameter(3));
       break;
     default:
       UNIMPLEMENTED();
       break;
   }
-  return compiler::CodeAssembler::GenerateCode(&state, FLAG_csa_verify);
+  return compiler::CodeAssembler::GenerateCode(&state);
 }
 
 template <class Stub>
 static Handle<Code> DoGenerateCode(Stub* stub) {
   Isolate* isolate = stub->isolate();
   CodeStubDescriptor descriptor(stub);
 
   if (FLAG_minimal && descriptor.has_miss_handler()) {
     return stub->GenerateRuntimeTailCall(&descriptor);
   }
@@ skipping 513 matching lines @@
   return BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash);
 }
 
 
 Handle<Code> LoadDictionaryElementStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 }  // namespace internal
 }  // namespace v8