Remove some leftovers of full-codegen's generators implementation.

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 113 matching lines @@
     __ movp(rcx, FieldOperand(rcx, LiteralsArray::kFeedbackVectorOffset));
     __ SmiAddConstant(
         FieldOperand(rcx,
                      TypeFeedbackVector::kInvocationCountIndex * kPointerSize +
                          TypeFeedbackVector::kHeaderSize),
         Smi::FromInt(1));
   }
 
   { Comment cmnt(masm_, "[ Allocate locals");
     int locals_count = info->scope()->num_stack_slots();
-    // Generators allocate locals, if any, in context slots.
-    DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0);
     OperandStackDepthIncrement(locals_count);
     if (locals_count == 1) {
       __ PushRoot(Heap::kUndefinedValueRootIndex);
     } else if (locals_count > 1) {
       if (locals_count >= 128) {
         Label ok;
         __ movp(rcx, rsp);
         __ subp(rcx, Immediate(locals_count * kPointerSize));
         __ CompareRoot(rcx, Heap::kRealStackLimitRootIndex);
         __ j(above_equal, &ok, Label::kNear);
@@ skipping 3320 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