[Interpreter] Add support for global declarations and load/store of global 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 9e329576809834eefb2a0e3d13befc41f8b71e83..4dd6f9a4c33b891003c8e6295d7f03f9af28610d 100644
--- a/test/unittests/interpreter/bytecode-array-builder-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
@@ -40,8 +40,12 @@ TEST_F(BytecodeArrayBuilderTest, AllBytecodesGenerated) {
   Register reg(0);
   builder.LoadAccumulatorWithRegister(reg).StoreAccumulatorInRegister(reg);
 
-  // Emit global load operations.
+  // Emit global load / store operations.
   builder.LoadGlobal(1);
+  builder.StoreGlobal(1, LanguageMode::SLOPPY);
+
+  // Emit context load operations.
+  builder.LoadContextSlot(reg, 1);
 
   // Emit load / store property operations.
   builder.LoadNamedProperty(reg, 0, LanguageMode::SLOPPY)