[fullcodegen] Remove deprecated generator implementation.

src/runtime/runtime-generator.cc

 // 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
-#include "src/debug/debug.h"
 #include "src/factory.h"
 #include "src/frames-inl.h"
 #include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {
 
 RUNTIME_FUNCTION(Runtime_CreateJSGeneratorObject) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
@@ skipping 16 matching lines @@
   Handle<JSGeneratorObject> generator =
       isolate->factory()->NewJSGeneratorObject(function);
   generator->set_function(*function);
   generator->set_context(isolate->context());
   generator->set_receiver(*receiver);
   generator->set_operand_stack(*operand_stack);
   generator->set_continuation(JSGeneratorObject::kGeneratorExecuting);
   return *generator;
 }
 
-RUNTIME_FUNCTION(Runtime_SuspendJSGeneratorObject) {
-  HandleScope handle_scope(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator_object, 0);
-
-  JavaScriptFrameIterator stack_iterator(isolate);
-  JavaScriptFrame* frame = stack_iterator.frame();
-  CHECK(IsResumableFunction(frame->function()->shared()->kind()));
-  DCHECK_EQ(frame->function(), generator_object->function());
-  DCHECK(frame->function()->shared()->is_compiled());
-  DCHECK(!frame->function()->IsOptimized());
-
-  isolate->debug()->RecordGenerator(generator_object);
-
-  // The caller should have saved the context and continuation already.
-  DCHECK_EQ(generator_object->context(), Context::cast(frame->context()));
-  DCHECK_LT(0, generator_object->continuation());
-
-  // We expect there to be at least two values on the operand stack: the return
-  // value of the yield expression, and the arguments to this runtime call.
-  // Neither of those should be saved.
-  int operands_count = frame->ComputeOperandsCount();
-  DCHECK_GE(operands_count, 1 + args.length());
-  operands_count -= 1 + args.length();
-
-  if (operands_count == 0) {
-    // Although it's semantically harmless to call this function with an
-    // operands_count of zero, it is also unnecessary.
-    DCHECK_EQ(generator_object->operand_stack(),
-              isolate->heap()->empty_fixed_array());
-  } else {
-    Handle<FixedArray> operand_stack =
-        isolate->factory()->NewFixedArray(operands_count);
-    frame->SaveOperandStack(*operand_stack);
-    generator_object->set_operand_stack(*operand_stack);
-  }
-
-  return isolate->heap()->undefined_value();
-}
-
 RUNTIME_FUNCTION(Runtime_GeneratorClose) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
 
   generator->set_continuation(JSGeneratorObject::kGeneratorClosed);
 
   return isolate->heap()->undefined_value();
 }
 
@@ skipping 41 matching lines @@
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
 
   if (!generator->is_suspended()) return isolate->heap()->undefined_value();
   return Smi::FromInt(generator->source_position());
 }
 
 }  // namespace internal
 }  // namespace v8