[full-codegen] Eliminate unnecessary hole checks for stores

src/full-codegen/full-codegen.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/full-codegen/full-codegen.h"
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/ast.h"
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 1564 matching lines @@
   PushOperand(result_register());
 
   EmitClassDefineProperties(lit);
   DropOperands(1);
 
   // Set the constructor to have fast properties.
   CallRuntimeWithOperands(Runtime::kToFastProperties);
 
   if (lit->class_variable_proxy() != nullptr) {
     EmitVariableAssignment(lit->class_variable_proxy()->var(), Token::INIT,
-                           lit->ProxySlot());
+                           lit->ProxySlot(), HoleCheckMode::kElided);
   }
 
   context()->Plug(result_register());
 }
 
 void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) {
   Comment cmnt(masm_, "[ RegExpLiteral");
   Callable callable = CodeFactory::FastCloneRegExp(isolate());
   CallInterfaceDescriptor descriptor = callable.descriptor();
   LoadFromFrameField(JavaScriptFrameConstants::kFunctionOffset,
@@ skipping 396 matching lines @@
   return info_->has_simple_parameters();
 }
 
 FunctionLiteral* FullCodeGenerator::literal() const { return info_->literal(); }
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8