[ignition] Reuse code-stub-assembler's context load operations.

src/interpreter/interpreter-assembler.cc

Index: src/interpreter/interpreter-assembler.cc
diff --git a/src/interpreter/interpreter-assembler.cc b/src/interpreter/interpreter-assembler.cc
index d990f6406db96aac34db45031d3ad5625bc58d0e..28f33f5990b96d38e7427723b12bfe703546542c 100644
--- a/src/interpreter/interpreter-assembler.cc
+++ b/src/interpreter/interpreter-assembler.cc
@@ -104,7 +104,7 @@ Node* InterpreterAssembler::GetContextAtDepth(Node* context, Node* depth) {
   {
     cur_depth.Bind(Int32Sub(cur_depth.value(), Int32Constant(1)));
     cur_context.Bind(
-        LoadContextSlot(cur_context.value(), Context::PREVIOUS_INDEX));
+        LoadContextElement(cur_context.value(), Context::PREVIOUS_INDEX));
 
     Branch(Word32Equal(cur_depth.value(), Int32Constant(0)), &context_found,
            &context_search);
@@ -135,14 +135,14 @@ void InterpreterAssembler::GotoIfHasContextExtensionUpToDepth(Node* context,
     // contexts actually need to be checked.
 
     Node* extension_slot =
-        LoadContextSlot(cur_context.value(), Context::EXTENSION_INDEX);
+        LoadContextElement(cur_context.value(), Context::EXTENSION_INDEX);
 
     // Jump to the target if the extension slot is not a hole.
     GotoIf(WordNotEqual(extension_slot, TheHoleConstant()), target);
 
     cur_depth.Bind(Int32Sub(cur_depth.value(), Int32Constant(1)));
     cur_context.Bind(
-        LoadContextSlot(cur_context.value(), Context::PREVIOUS_INDEX));
+        LoadContextElement(cur_context.value(), Context::PREVIOUS_INDEX));
 
     GotoIf(Word32NotEqual(cur_depth.value(), Int32Constant(0)),
            &context_search);
@@ -485,11 +485,6 @@ Node* InterpreterAssembler::LoadAndUntagConstantPoolEntry(Node* index) {
   }
 }
 
-Node* InterpreterAssembler::LoadContextSlot(Node* context, int slot_index) {
-  return Load(MachineType::AnyTagged(), context,
-              IntPtrConstant(Context::SlotOffset(slot_index)));
-}
-
 Node* InterpreterAssembler::LoadContextSlot(Node* context, Node* slot_index) {
   Node* offset =
       IntPtrAdd(WordShl(slot_index, kPointerSizeLog2),