[ignition,modules] Introduce bytecodes for loading/storing module variables.

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index 5f37c280d453d3d78e834f81c1a2516288c895be..9af605f8633155c8fb2a3152243456559e964fa1 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -99,6 +99,12 @@ class V8_EXPORT_PRIVATE BytecodeArrayBuilder final
   BytecodeArrayBuilder& StoreContextSlot(Register context, int slot_index,
                                          int depth);
 
+  // Load from a module variable into the accumulator.
+  BytecodeArrayBuilder& LoadModuleVariable(int index);
+
+  // Store from the accumulator into a module variable.
+  BytecodeArrayBuilder& StoreModuleVariable(int index);
+
   // Register-accumulator transfers.
   BytecodeArrayBuilder& LoadAccumulatorWithRegister(Register reg);
   BytecodeArrayBuilder& StoreAccumulatorInRegister(Register reg);