[Interpreter] Add support for loading globals in the interpreter.

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 f7a8dddebd3f77d78cc90ce58264ad3736b3be4e..d1277a4ff01d1ce13f146ef65ac096bc15f86136 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -49,6 +49,9 @@ class BytecodeArrayBuilder {
   BytecodeArrayBuilder& LoadTrue();
   BytecodeArrayBuilder& LoadFalse();
 
+  // Global loads to accumulator.
+  BytecodeArrayBuilder& LoadGlobal(int slot_index);
+
   // Register-accumulator transfers.
   BytecodeArrayBuilder& LoadAccumulatorWithRegister(Register reg);
   BytecodeArrayBuilder& StoreAccumulatorInRegister(Register reg);