Install the 'name' property in classes at runtime

src/full-codegen/x64/full-codegen-x64.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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/full-codegen/full-codegen.h"
 #include "src/ast/compile-time-value.h"
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
@@ skipping 1882 matching lines @@
         break;
 
       case ClassLiteral::Property::FIELD:
       default:
         UNREACHABLE();
     }
   }
 }
 
 
+void FullCodeGenerator::EmitClassDefineNameProperty(ClassLiteral* lit) {
+  DCHECK(lit->constructor()->raw_name() != nullptr);
+
+  if (!lit->constructor()->raw_name()->IsEmpty()) {

[Toon Verwaest, 2016/11/24 07:13:38]

Here you can know at compile-time that the name is the empty string.

+    PushOperand(Operand(rsp, 0));  // constructor
+    PushOperand(lit->constructor()->name());
+    CallRuntimeWithOperands(Runtime::kDefineClassNameProperty);
+  }
+}
+
+
 void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) {
   PopOperand(rdx);
   Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code();
   JumpPatchSite patch_site(masm_);    // unbound, signals no inlined smi code.
   CallIC(code, expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
   context()->Plug(rax);
 }
 
 
@@ skipping 1635 matching lines @@
   DCHECK_EQ(
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64