diff --git a/test/cctest/interpreter/bytecode_expectations/ForIn.golden b/test/cctest/interpreter/bytecode_expectations/ForIn.golden
new file mode 100644
index 0000000..9f0c64a
--- /dev/null
+++ b/test/cctest/interpreter/bytecode_expectations/ForIn.golden
@@ -0,0 +1,259 @@
+#
+# Autogenerated by generate-bytecode-expectations.
+#
+
+---
+pool type: mixed
+execute: yes
+wrap: yes
+
+---
+snippet: "
+  for (var p in null) {}
+"
+frame size: 2
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  for (var p in undefined) {}
+"
+frame size: 2
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  for (var p in undefined) {}
+"
+frame size: 2
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  var x = 'potatoes';
+  for (var p in x) { return p; }
+"
+frame size: 8
+parameter count: 1
+bytecode array length: 45
+bytecodes: [
+  B(StackCheck),
+  B(LdaConstant), U8(0),
+  B(Star), R(1),
+  B(JumpIfUndefined), U8(38),
+  B(JumpIfNull), U8(36),
+  B(ToObject),
+  B(Star), R(3),
+  B(ForInPrepare), R(4),
+  B(LdaZero),
+  B(Star), R(7),
+  B(ForInDone), R(7), R(6),
+  B(JumpIfTrue), U8(23),
+  B(ForInNext), R(3), R(7), R(4), U8(1),
+  B(JumpIfUndefined), U8(10),
+  B(Star), R(0),
+  B(StackCheck),
+  B(Ldar), R(0),
+  B(Star), R(2),
+  B(Return),
+  B(ForInStep), R(7),
+  B(Star), R(7),
+  B(Jump), U8(-24),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+  InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE,
+]
+handlers: [
+]
+
+---
+snippet: "
+  var x = 0;
+  for (var p in [1,2,3]) { x += p; }
+"
+frame size: 9
+parameter count: 1
+bytecode array length: 57
+bytecodes: [
+  B(StackCheck),
+  B(LdaZero),
+  B(Star), R(1),
+  B(CreateArrayLiteral), U8(0), U8(0), U8(3),
+  B(JumpIfUndefined), U8(47),
+  B(JumpIfNull), U8(45),
+  B(ToObject),
+  B(Star), R(3),
+  B(ForInPrepare), R(4),
+  B(LdaZero),
+  B(Star), R(7),
+  B(ForInDone), R(7), R(6),
+  B(JumpIfTrue), U8(32),
+  B(ForInNext), R(3), R(7), R(4), U8(1),
+  B(JumpIfUndefined), U8(19),
+  B(Star), R(0),
+  B(StackCheck),
+  B(Ldar), R(0),
+  B(Star), R(2),
+  B(Ldar), R(1),
+  B(Star), R(8),
+  B(Ldar), R(2),
+  B(Add), R(8),
+  B(Star), R(1),
+  B(ForInStep), R(7),
+  B(Star), R(7),
+  B(Jump), U8(-33),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+  InstanceType::FIXED_ARRAY_TYPE,
+]
+handlers: [
+]
+
+---
+snippet: "
+  var x = { 'a': 1, 'b': 2 };
+  for (x['a'] in [10, 20, 30]) {
+    if (x['a'] == 10) continue;
+    if (x['a'] == 20) break;
+  }
+"
+frame size: 8
+parameter count: 1
+bytecode array length: 94
+bytecodes: [
+  B(StackCheck),
+  B(CreateObjectLiteral), U8(0), U8(0), U8(5),
+  B(Star), R(1),
+  B(Star), R(0),
+  B(CreateArrayLiteral), U8(1), U8(1), U8(3),
+  B(JumpIfUndefined), U8(79),
+  B(JumpIfNull), U8(77),
+  B(ToObject),
+  B(Star), R(1),
+  B(ForInPrepare), R(2),
+  B(LdaZero),
+  B(Star), R(5),
+  B(ForInDone), R(5), R(4),
+  B(JumpIfTrue), U8(64),
+  B(ForInNext), R(1), R(5), R(2), U8(9),
+  B(JumpIfUndefined), U8(51),
+  B(Star), R(6),
+  B(Ldar), R(0),
+  B(Star), R(7),
+  B(Ldar), R(6),
+  B(StoreICSloppy), R(7), U8(2), U8(7),
+  B(StackCheck),
+  B(Ldar), R(0),
+  B(Star), R(6),
+  B(LoadIC), R(6), U8(2), U8(3),
+  B(Star), R(7),
+  B(LdaSmi), U8(10),
+  B(TestEqual), R(7),
+  B(JumpIfFalse), U8(4),
+  B(Jump), U8(20),
+  B(Ldar), R(0),
+  B(Star), R(6),
+  B(LoadIC), R(6), U8(2), U8(5),
+  B(Star), R(7),
+  B(LdaSmi), U8(20),
+  B(TestEqual), R(7),
+  B(JumpIfFalse), U8(4),
+  B(Jump), U8(8),
+  B(ForInStep), R(5),
+  B(Star), R(5),
+  B(Jump), U8(-65),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+  InstanceType::FIXED_ARRAY_TYPE,
+  InstanceType::FIXED_ARRAY_TYPE,
+  InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE,
+]
+handlers: [
+]
+
+---
+snippet: "
+  var x = [ 10, 11, 12 ] ;
+  for (x[0] in [1,2,3]) { return x[3]; }
+"
+frame size: 9
+parameter count: 1
+bytecode array length: 69
+bytecodes: [
+  B(StackCheck),
+  B(CreateArrayLiteral), U8(0), U8(0), U8(3),
+  B(Star), R(0),
+  B(CreateArrayLiteral), U8(1), U8(1), U8(3),
+  B(JumpIfUndefined), U8(56),
+  B(JumpIfNull), U8(54),
+  B(ToObject),
+  B(Star), R(1),
+  B(ForInPrepare), R(2),
+  B(LdaZero),
+  B(Star), R(5),
+  B(ForInDone), R(5), R(4),
+  B(JumpIfTrue), U8(41),
+  B(ForInNext), R(1), R(5), R(2), U8(7),
+  B(JumpIfUndefined), U8(28),
+  B(Star), R(6),
+  B(Ldar), R(0),
+  B(Star), R(7),
+  B(LdaZero),
+  B(Star), R(8),
+  B(Ldar), R(6),
+  B(KeyedStoreICSloppy), R(7), R(8), U8(5),
+  B(StackCheck),
+  B(Ldar), R(0),
+  B(Star), R(6),
+  B(LdaSmi), U8(3),
+  B(KeyedLoadIC), R(6), U8(3),
+  B(Return),
+  B(ForInStep), R(5),
+  B(Star), R(5),
+  B(Jump), U8(-42),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+  InstanceType::FIXED_ARRAY_TYPE,
+  InstanceType::FIXED_ARRAY_TYPE,
+]
+handlers: [
+]
+