[interpreter] Add support for scalable operands.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index 221ff108506b78ef8ebc546c89b6a5aeecee81a2..4ea895526b6b3e8d54908e3ebdc17719938f7293 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -1133,7 +1133,7 @@ void BytecodeGenerator::VisitForInStatement(ForInStatement* stmt) {
   Register cache_type = register_allocator()->NextConsecutiveRegister();
   Register cache_array = register_allocator()->NextConsecutiveRegister();
   Register cache_length = register_allocator()->NextConsecutiveRegister();
-  // Used as kRegTriple8 and kRegPair8 in ForInPrepare and ForInNext.
+  // Used as kRegTriple and kRegPair in ForInPrepare and ForInNext.
   USE(cache_array);
   builder()->ForInPrepare(cache_type);