[ignition] desugar GetIterator() via bytecode rather than via AST

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index 8a33edd8b8db4a0ff59b7dadaed53846d6c220fb..1f0a2155755b370a2135dfbc72d8d691214f8c3e 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -10,6 +10,7 @@
 #include "src/compiler/compiler-source-position-table.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/operator-properties.h"
+#include "src/compiler/simplified-operator.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/objects-inl.h"
 
@@ -1696,6 +1697,12 @@ void BytecodeGraphBuilder::VisitJumpIfNotHoleConstant() {
   BuildJumpIfNotHole();
 }
 
+void BytecodeGraphBuilder::VisitJumpIfJSReceiver() { BuildJumpIfJSReceiver(); }
+
+void BytecodeGraphBuilder::VisitJumpIfJSReceiverConstant() {
+  BuildJumpIfJSReceiver();
+}
+
 void BytecodeGraphBuilder::VisitJumpIfNull() {
   BuildJumpIfEqual(jsgraph()->NullConstant());
 }
@@ -2007,6 +2014,12 @@ void BytecodeGraphBuilder::BuildJumpIfNotHole() {
   BuildJumpIfNot(condition);
 }
 
+void BytecodeGraphBuilder::BuildJumpIfJSReceiver() {
+  Node* accumulator = environment()->LookupAccumulator();
+  Node* condition = NewNode(simplified()->ObjectIsReceiver(), accumulator);
+  BuildJumpIf(condition);
+}
+
 Node** BytecodeGraphBuilder::EnsureInputBufferSize(int size) {
   if (size > input_buffer_size_) {
     size = size + kInputBufferSizeIncrement + input_buffer_size_;