[generators] Replace some runtime functions with Turbofan JS operators.

src/runtime/runtime-generator.cc

Index: src/runtime/runtime-generator.cc
diff --git a/src/runtime/runtime-generator.cc b/src/runtime/runtime-generator.cc
index 7ff7fc8b7bb97e11ac18f0cbdaa276b96422dc41..c0b095bde2289e44afd55fb725c678a2f78eab1f 100644
--- a/src/runtime/runtime-generator.cc
+++ b/src/runtime/runtime-generator.cc
@@ -129,16 +129,6 @@ RUNTIME_FUNCTION(Runtime_GeneratorGetResumeMode) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_GeneratorSetContext) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
-
-  generator->set_context(isolate->context());
-  return isolate->heap()->undefined_value();
-}
-
-
 RUNTIME_FUNCTION(Runtime_GeneratorGetContinuation) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
@@ -148,45 +138,6 @@ RUNTIME_FUNCTION(Runtime_GeneratorGetContinuation) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_GeneratorSetContinuation) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
-  CONVERT_SMI_ARG_CHECKED(continuation, 1);
-
-  generator->set_continuation(continuation);
-  return isolate->heap()->undefined_value();
-}
-
-
-RUNTIME_FUNCTION(Runtime_GeneratorLoadRegister) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
-  CONVERT_SMI_ARG_CHECKED(index, 1);
-
-  DCHECK(FLAG_ignition && FLAG_ignition_generators);
-  DCHECK(generator->function()->shared()->HasBytecodeArray());
-
-  return generator->operand_stack()->get(index);
-}
-
-
-RUNTIME_FUNCTION(Runtime_GeneratorStoreRegister) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 3);
-  CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
-  CONVERT_SMI_ARG_CHECKED(index, 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
-
-  DCHECK(FLAG_ignition && FLAG_ignition_generators);
-  DCHECK(generator->function()->shared()->HasBytecodeArray());
-
-  generator->operand_stack()->set(index, *value);
-  return isolate->heap()->undefined_value();
-}
-
-
 RUNTIME_FUNCTION(Runtime_GeneratorGetSourcePosition) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);