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

test/unittests/interpreter/bytecode-array-builder-unittest.cc

Index: test/unittests/interpreter/bytecode-array-builder-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-builder-unittest.cc b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
index 9ce46c4a7534005bc159b731638073b43d36a887..8b677370959e720fb852d128ce769735e4e52508 100644
--- a/test/unittests/interpreter/bytecode-array-builder-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
@@ -332,7 +332,15 @@ TEST_F(BytecodeArrayBuilderTest, AllBytecodesGenerated) {
       .CreateArrayLiteral(factory->NewFixedArray(2), 0, 0)
       .CreateObjectLiteral(factory->NewFixedArray(2), 0, 0, reg);
 
-  // Emit generator operations
+  // Emit load and store operations for module variables.
+  builder.LoadModuleVariable(-1, 42)
+      .LoadModuleVariable(0, 42)
+      .LoadModuleVariable(1, 42)
+      .StoreModuleVariable(-1, 42)
+      .StoreModuleVariable(0, 42)
+      .StoreModuleVariable(1, 42);
+
+  // Emit generator operations.
   builder.SuspendGenerator(reg)
       .ResumeGenerator(reg);