[runtime] Rename {JSGeneratorObject::operand_stack} field.

src/compiler/js-typed-lowering.cc

Index: src/compiler/js-typed-lowering.cc
diff --git a/src/compiler/js-typed-lowering.cc b/src/compiler/js-typed-lowering.cc
index 335ab45292214de18c75121f6d4f919872d795f4..00cf092175889b56919424d94249c7396de8acc7 100644
--- a/src/compiler/js-typed-lowering.cc
+++ b/src/compiler/js-typed-lowering.cc
@@ -2096,7 +2096,7 @@ Reduction JSTypedLowering::ReduceJSGeneratorStore(Node* node) {
   Node* control = NodeProperties::GetControlInput(node);
   int register_count = OpParameter<int>(node);
 
-  FieldAccess array_field = AccessBuilder::ForJSGeneratorObjectOperandStack();
+  FieldAccess array_field = AccessBuilder::ForJSGeneratorObjectRegisterFile();
   FieldAccess context_field = AccessBuilder::ForJSGeneratorObjectContext();
   FieldAccess continuation_field =
       AccessBuilder::ForJSGeneratorObjectContinuation();
@@ -2150,7 +2150,7 @@ Reduction JSTypedLowering::ReduceJSGeneratorRestoreRegister(Node* node) {
   Node* control = NodeProperties::GetControlInput(node);
   int index = OpParameter<int>(node);
 
-  FieldAccess array_field = AccessBuilder::ForJSGeneratorObjectOperandStack();
+  FieldAccess array_field = AccessBuilder::ForJSGeneratorObjectRegisterFile();
   FieldAccess element_field = AccessBuilder::ForFixedArraySlot(index);
 
   Node* array = effect = graph()->NewNode(simplified()->LoadField(array_field),