For-of on null or undefined is an error

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index f79e23017e33cc5d1d774f1d4d98836b79cb0ac1..daacbd6026eed0c50623f7279312e78c03ef0159 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -1241,15 +1241,6 @@ void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) {
   Iteration loop_statement(this, stmt);
   increment_loop_depth();
 
-  // var iterable = subject
-  VisitForAccumulatorValue(stmt->assign_iterable());
-
-  // As with for-in, skip the loop if the iterable is null or undefined.
-  __ CompareRoot(rax, Heap::kUndefinedValueRootIndex);
-  __ j(equal, loop_statement.break_label());
-  __ CompareRoot(rax, Heap::kNullValueRootIndex);
-  __ j(equal, loop_statement.break_label());
-
   // var iterator = iterable[Symbol.iterator]();
   VisitForEffect(stmt->assign_iterator());