[generators] Remove generator_object_ member from Suspend AST node

Now that the BytecodeGenerator has a dedicated register holding
the generator object, BytecodeGenerator::VisitSuspend can
access the generator directly from that register. This reduces
by one the number of live registers at each suspend point.

Bug: v8:6351, v8:6460
Change-Id: I380a9d2bd8ca7eec6720e5392c1ca07dd0df0e2d
Reviewed-on: https://chromium-review.googlesource.com/522982
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45710}

src/ast/ast-expression-rewriter.cc

@@ -267,7 +267,6 @@ void AstExpressionRewriter::VisitAssignment(Assignment* node) {
 
 void AstExpressionRewriter::VisitSuspend(Suspend* node) {
   REWRITE_THIS(node);
-  AST_REWRITE_PROPERTY(Expression, node, generator_object);
   AST_REWRITE_PROPERTY(Expression, node, expression);
 }
 

src/ast/ast-numbering.cc

@@ -246,7 +246,6 @@ void AstNumberingVisitor::VisitSuspend(Suspend* node) {
   suspend_count_++;
   IncrementNodeCount();
   node->set_base_id(ReserveIdRange(Suspend::num_ids()));
-  Visit(node->generator_object());
   Visit(node->expression());
 }
 

src/ast/ast-traversal-visitor.h

@@ -359,7 +359,6 @@ void AstTraversalVisitor<Subclass>::VisitAssignment(Assignment* expr) {
 template <class Subclass>
 void AstTraversalVisitor<Subclass>::VisitSuspend(Suspend* expr) {
   PROCESS_EXPRESSION(expr);
-  RECURSE_EXPRESSION(Visit(expr->generator_object()));
   RECURSE_EXPRESSION(Visit(expr->expression()));
 }
 

src/ast/ast.h

@@ -2512,7 +2512,6 @@ class Suspend final : public Expression {
   // desugar yield*.
   enum OnAbruptResume { kOnExceptionThrow, kOnExceptionRethrow, kNoControl };
 
-  Expression* generator_object() const { return generator_object_; }
   Expression* expression() const { return expression_; }
   OnAbruptResume on_abrupt_resume() const {
     return OnAbruptResumeField::decode(bit_field_);
@@ -2543,7 +2542,6 @@ class Suspend final : public Expression {
                                    SuspendFlags::kAsyncGenerator;
   }
 
-  void set_generator_object(Expression* e) { generator_object_ = e; }
   void set_expression(Expression* e) { expression_ = e; }
   void set_suspend_id(int id) { suspend_id_ = id; }
   void set_suspend_type(SuspendFlags type) {
@@ -2554,18 +2552,14 @@ class Suspend final : public Expression {
  private:
   friend class AstNodeFactory;
 
-  Suspend(Expression* generator_object, Expression* expression, int pos,
-          OnAbruptResume on_abrupt_resume, SuspendFlags flags)
-      : Expression(pos, kSuspend),
-        suspend_id_(-1),
-        generator_object_(generator_object),
-        expression_(expression) {
+  Suspend(Expression* expression, int pos, OnAbruptResume on_abrupt_resume,
+          SuspendFlags flags)
+      : Expression(pos, kSuspend), suspend_id_(-1), expression_(expression) {
     bit_field_ |= OnAbruptResumeField::encode(on_abrupt_resume) |
                   FlagsField::encode(flags);
   }
 
   int suspend_id_;
-  Expression* generator_object_;
   Expression* expression_;
 
   class OnAbruptResumeField
@@ -3555,12 +3549,11 @@ class AstNodeFactory final BASE_EMBEDDED {
     return assign;
   }
 
-  Suspend* NewSuspend(Expression* generator_object, Expression* expression,
-                      int pos, Suspend::OnAbruptResume on_abrupt_resume,
+  Suspend* NewSuspend(Expression* expression, int pos,
+                      Suspend::OnAbruptResume on_abrupt_resume,
                       SuspendFlags flags) {
     if (!expression) expression = NewUndefinedLiteral(pos);
-    return new (zone_)
-        Suspend(generator_object, expression, pos, on_abrupt_resume, flags);
+    return new (zone_) Suspend(expression, pos, on_abrupt_resume, flags);
   }
 
   Throw* NewThrow(Expression* exception, int pos) {

src/compiler/ast-loop-assignment-analyzer.cc

@@ -150,7 +150,6 @@ void ALAA::VisitObjectLiteral(ObjectLiteral* e) {
 void ALAA::VisitArrayLiteral(ArrayLiteral* e) { VisitExpressions(e->values()); }
 
 void ALAA::VisitSuspend(Suspend* stmt) {
-  Visit(stmt->generator_object());
   Visit(stmt->expression());
 }
 

src/crankshaft/typing.cc

@@ -468,7 +468,6 @@ void AstTyper::VisitAssignment(Assignment* expr) {
 }
 
 void AstTyper::VisitSuspend(Suspend* expr) {
-  RECURSE(Visit(expr->generator_object()));
   RECURSE(Visit(expr->expression()));
 
   // We don't know anything about the result type.

src/interpreter/bytecode-generator.cc

@@ -2521,7 +2521,7 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) {
   }
 }
 
-void BytecodeGenerator::BuildGeneratorSuspend(Suspend* expr, Register generator,
+void BytecodeGenerator::BuildGeneratorSuspend(Suspend* expr,
                                               RegisterList registers_to_save) {
   RegisterAllocationScope register_scope(this);
 
@@ -2531,7 +2531,7 @@ void BytecodeGenerator::BuildGeneratorSuspend(Suspend* expr, Register generator,
   // Save context, registers, and state. Then return.
   builder()
       ->LoadLiteral(Smi::FromInt(expr->suspend_id()))
-      .SuspendGenerator(generator, registers_to_save, expr->flags());
+      .SuspendGenerator(generator_object_, registers_to_save, expr->flags());
 
   if (expr->IsNonInitialAsyncGeneratorYield()) {
     // AsyncGenerator yields (with the exception of the initial yield) delegate
@@ -2541,7 +2541,7 @@ void BytecodeGenerator::BuildGeneratorSuspend(Suspend* expr, Register generator,
     // AsyncGeneratorYield:
     // perform AsyncGeneratorResolve(<generator>, <value>, false).
     builder()
-        ->MoveRegister(generator, args[0])
+        ->MoveRegister(generator_object_, args[0])
         .MoveRegister(value, args[1])
         .LoadFalse()
         .StoreAccumulatorInRegister(args[2])
@@ -2553,7 +2553,7 @@ void BytecodeGenerator::BuildGeneratorSuspend(Suspend* expr, Register generator,
 }
 
 void BytecodeGenerator::BuildGeneratorResume(
-    Suspend* expr, Register generator, RegisterList registers_to_restore) {
+    Suspend* expr, RegisterList registers_to_restore) {
   RegisterAllocationScope register_scope(this);
 
   // Clobbers all registers.
@@ -2575,13 +2575,13 @@ void BytecodeGenerator::BuildGeneratorResume(
           ? Runtime::kInlineAsyncGeneratorGetAwaitInputOrDebugPos
           : Runtime::kInlineGeneratorGetInputOrDebugPos;
 
-  DCHECK(generator.is_valid());
-  builder()->CallRuntime(get_generator_input, generator);
+  builder()->CallRuntime(get_generator_input, generator_object_);
 
   if (expr->on_abrupt_resume() != Suspend::kNoControl) {
     builder()->StoreAccumulatorInRegister(input);
 
-    builder()->CallRuntime(Runtime::kInlineGeneratorGetResumeMode, generator);
+    builder()->CallRuntime(Runtime::kInlineGeneratorGetResumeMode,
+                           generator_object_);
 
     // Now dispatch on resume mode.
     STATIC_ASSERT(JSGeneratorObject::kNext + 1 == JSGeneratorObject::kReturn);
@@ -2630,12 +2630,11 @@ void BytecodeGenerator::BuildGeneratorResume(
 }
 
 void BytecodeGenerator::VisitSuspend(Suspend* expr) {
-  Register generator = VisitForRegisterValue(expr->generator_object());
   RegisterList registers(0, register_allocator()->next_register_index());
-  BuildGeneratorSuspend(expr, generator, registers);
+  BuildGeneratorSuspend(expr, registers);
   builder()->Bind(generator_jump_table_, static_cast<int>(expr->suspend_id()));
   // Upon resume, we continue here.
-  BuildGeneratorResume(expr, generator, registers);
+  BuildGeneratorResume(expr, registers);
 }
 
 void BytecodeGenerator::VisitThrow(Throw* expr) {

src/interpreter/bytecode-generator.h

@@ -136,10 +136,8 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   void BuildNewLocalWithContext(Scope* scope);
 
   void BuildGeneratorPrologue();
-  void BuildGeneratorSuspend(Suspend* expr, Register generator,
-                             RegisterList registers_to_save);
-  void BuildGeneratorResume(Suspend* expr, Register generator,
-                            RegisterList registers_to_restore);
+  void BuildGeneratorSuspend(Suspend* expr, RegisterList registers_to_save);
+  void BuildGeneratorResume(Suspend* expr, RegisterList registers_to_restore);
 
   void VisitArgumentsObject(Variable* variable);
   void VisitRestArgumentsArray(Variable* rest);

src/parsing/parser-base.h

@@ -1399,16 +1399,15 @@ class ParserBase {
   }
 
   inline SuspendExpressionT BuildSuspend(
-      ExpressionT generator, ExpressionT expr, int pos,
-      Suspend::OnAbruptResume on_abrupt_resume, SuspendFlags suspend_type) {
+      ExpressionT expr, int pos, Suspend::OnAbruptResume on_abrupt_resume,
+      SuspendFlags suspend_type) {
     DCHECK_EQ(0,
               static_cast<int>(suspend_type & ~SuspendFlags::kSuspendTypeMask));
     if (V8_UNLIKELY(is_async_generator())) {
       suspend_type = static_cast<SuspendFlags>(suspend_type |
                                                SuspendFlags::kAsyncGenerator);
     }
-    return factory()->NewSuspend(generator, expr, pos, on_abrupt_resume,
-                                 suspend_type);
+    return factory()->NewSuspend(expr, pos, on_abrupt_resume, suspend_type);
   }
 
   // Validation per ES6 object literals.
@@ -2970,8 +2969,6 @@ typename ParserBase<Impl>::ExpressionT ParserBase<Impl>::ParseYieldExpression(
   classifier()->RecordFormalParameterInitializerError(
       scanner()->peek_location(), MessageTemplate::kYieldInParameter);
   Expect(Token::YIELD, CHECK_OK);
-  ExpressionT generator_object =
-      factory()->NewVariableProxy(function_state_->generator_object_variable());
   // The following initialization is necessary.
   ExpressionT expression = impl()->EmptyExpression();
   bool delegating = false;  // yield*
@@ -2999,7 +2996,7 @@ typename ParserBase<Impl>::ExpressionT ParserBase<Impl>::ParseYieldExpression(
   }
 
   if (delegating) {
-    return impl()->RewriteYieldStar(generator_object, expression, pos);
+    return impl()->RewriteYieldStar(expression, pos);
   }
 
   if (!is_async_generator()) {
@@ -3010,9 +3007,8 @@ typename ParserBase<Impl>::ExpressionT ParserBase<Impl>::ParseYieldExpression(
 
   // Hackily disambiguate o from o.next and o [Symbol.iterator]().
   // TODO(verwaest): Come up with a better solution.
-  ExpressionT yield =
-      BuildSuspend(generator_object, expression, pos,
-                   Suspend::kOnExceptionThrow, SuspendFlags::kYield);
+  ExpressionT yield = BuildSuspend(expression, pos, Suspend::kOnExceptionThrow,
+                                   SuspendFlags::kYield);
   return yield;
 }
 

src/parsing/parser.cc

@@ -3177,17 +3177,12 @@ Variable* Parser::AsyncGeneratorAwaitVariable() {
 }
 
 Expression* Parser::BuildInitialYield(int pos, FunctionKind kind) {
-  // We access the generator object twice: once for the {generator}
-  // member of the Suspend AST node, and once for the result of
-  // the initial yield.
   Expression* yield_result =
       factory()->NewVariableProxy(function_state_->generator_object_variable());
-  Expression* generator_object =
-      factory()->NewVariableProxy(function_state_->generator_object_variable());
   // The position of the yield is important for reporting the exception
   // caused by calling the .throw method on a generator suspended at the
   // initial yield (i.e. right after generator instantiation).
-  return BuildSuspend(generator_object, yield_result, scope()->start_position(),
+  return BuildSuspend(yield_result, scope()->start_position(),
                       Suspend::kOnExceptionThrow, SuspendFlags::kYield);
 }
 
@@ -3922,8 +3917,8 @@ Expression* Parser::RewriteAwaitExpression(Expression* value, int await_pos) {
 
     Expression* do_expr = factory()->NewDoExpression(
         do_block, AsyncGeneratorAwaitVariable(), nopos);
-    return BuildSuspend(generator_object, do_expr, await_pos,
-                        Suspend::kOnExceptionRethrow, SuspendFlags::kAwait);
+    return BuildSuspend(do_expr, await_pos, Suspend::kOnExceptionRethrow,
+                        SuspendFlags::kAwait);
   }
 
   // The parser emits calls to AsyncFunctionAwaitCaught or but the
@@ -3942,8 +3937,7 @@ Expression* Parser::RewriteAwaitExpression(Expression* value, int await_pos) {
   Expression* do_expr =
       factory()->NewDoExpression(do_block, PromiseVariable(), nopos);
 
-  return factory()->NewSuspend(generator_object, do_expr, await_pos,
-                               Suspend::kOnExceptionRethrow,
+  return factory()->NewSuspend(do_expr, await_pos, Suspend::kOnExceptionRethrow,
                                SuspendFlags::kAwait);
 }
 
@@ -4288,8 +4282,7 @@ void Parser::SetFunctionName(Expression* value, const AstRawString* name) {
 //   output = %_Call(iteratorReturn, iterator, input);
 //   if (!IS_RECEIVER(output)) %ThrowIterResultNotAnObject(output);
 
-Expression* Parser::RewriteYieldStar(Expression* generator,
-                                     Expression* iterable, int pos) {
+Expression* Parser::RewriteYieldStar(Expression* iterable, int pos) {
   const int nopos = kNoSourcePosition;
   IteratorType type =
       is_async_generator() ? IteratorType::kAsync : IteratorType::kNormal;
@@ -4484,9 +4477,8 @@ Expression* Parser::RewriteYieldStar(Expression* generator,
   Statement* yield_output;
   {
     Expression* output_proxy = factory()->NewVariableProxy(var_output);
-    Suspend* yield =
-        BuildSuspend(generator, output_proxy, nopos, Suspend::kNoControl,
-                     SuspendFlags::kYieldStar);
+    Suspend* yield = BuildSuspend(output_proxy, nopos, Suspend::kNoControl,
+                                  SuspendFlags::kYieldStar);
     yield_output = factory()->NewExpressionStatement(yield, nopos);
   }
 

src/parsing/parser.h

@@ -688,8 +688,7 @@ class V8_EXPORT_PRIVATE Parser : public NON_EXPORTED_BASE(ParserBase<Parser>) {
                                           Block* block,
                                           Expression* return_value, bool* ok);
 
-  Expression* RewriteYieldStar(Expression* generator, Expression* expression,
-                               int pos);
+  Expression* RewriteYieldStar(Expression* expression, int pos);
 
   void AddArrowFunctionFormalParameters(ParserFormalParameters* parameters,
                                         Expression* params, int end_pos,

src/parsing/preparser.h

@@ -642,8 +642,7 @@ class PreParserFactory {
     // default value inside an arrow function parameter list.
     return PreParserExpression::Assignment(left.variables_);
   }
-  PreParserExpression NewSuspend(PreParserExpression generator_object,
-                                 PreParserExpression expression, int pos,
+  PreParserExpression NewSuspend(PreParserExpression expression, int pos,
                                  Suspend::OnAbruptResume on_abrupt_resume,
                                  SuspendFlags flags) {
     return PreParserExpression::Default();
@@ -1014,8 +1013,7 @@ class PreParser : public ParserBase<PreParser> {
                                           PreParserStatement block,
                                           PreParserExpression return_value,
                                           bool* ok) {}
-  V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression generator,
-                                                 PreParserExpression expression,
+  V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression expression,
                                                  int pos) {
     return PreParserExpression::Default();
   }

test/cctest/interpreter/bytecode_expectations/ForAwaitOf.golden

@@ -14,9 +14,9 @@ snippet: "
   }
   f();
 "
-frame size: 27
+frame size: 26
 parameter count: 1
-bytecode array length: 712
+bytecode array length: 703
 bytecodes: [
                 B(Mov), R(new_target), R(11),
                 B(Ldar), R(new_target),
@@ -71,39 +71,38 @@ bytecodes: [
                 B(Star), R(22),
                 B(CallRuntime), U16(Runtime::kAbort), R(22), U8(1),
   /*   40 S> */ B(LdaUndefined),
-                B(Star), R(23),
-  /*   40 E> */ B(LdaNamedProperty), R(4), U8(7), U8(14),
-                B(Star), R(25),
-                B(CallProperty0), R(25), R(4), U8(12),
-                B(Star), R(25),
-                B(Mov), R(2), R(24),
-                B(Mov), R(7), R(26),
-                B(CallJSRuntime), U8(%async_function_await_uncaught), R(23), U8(4),
+                B(Star), R(22),
+                B(LdaNamedProperty), R(4), U8(7), U8(14),
+                B(Star), R(24),
+                B(CallProperty0), R(24), R(4), U8(12),
+                B(Star), R(24),
+                B(Mov), R(2), R(23),
+                B(Mov), R(7), R(25),
+                B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(4),
                 B(LdaZero),
-                B(Mov), R(2), R(22),
-                B(Mov), R(7), R(23),
-                B(SuspendGenerator), R(22), R(0), U8(23), U8(2),
-                B(Ldar), R(23),
+                B(Mov), R(7), R(22),
+                B(SuspendGenerator), R(11), R(0), U8(22), U8(2),
+                B(Ldar), R(22),
   /*   57 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(22), U8(1),
-                B(Star), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(22), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(8), U8(2), I8(0),
-                B(Ldar), R(23),
+                B(Ldar), R(22),
   /*   40 E> */ B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(25),
-                B(Mov), R(23), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(22), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
                 B(Star), R(19),
                 B(LdaZero),
                 B(Star), R(18),
                 B(Jump), U8(98),
-                B(Mov), R(23), R(5),
-  /*   40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(5), U8(1),
+                B(Mov), R(22), R(5),
+  /*   40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(22), U8(1),
                 B(ToBooleanLogicalNot),
                 B(JumpIfFalse), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
@@ -118,7 +117,7 @@ bytecodes: [
                 B(Mov), R(3), R(0),
                 B(LdaZero),
                 B(Star), R(6),
-                B(JumpLoop), U8(144), I8(0),
+                B(JumpLoop), U8(141), I8(0),
                 B(Jump), U8(40),
                 B(Star), R(22),
                 B(Ldar), R(closure),
@@ -148,15 +147,15 @@ bytecodes: [
                 B(Star), R(20),
                 B(LdaZero),
                 B(TestEqualStrict), R(6), U8(21),
-                B(JumpIfTrue), U8(253),
+                B(JumpIfTrue), U8(247),
                 B(LdaNamedProperty), R(4), U8(14), U8(22),
                 B(Star), R(9),
                 B(TestUndetectable),
                 B(JumpIfFalse), U8(4),
-                B(Jump), U8(242),
+                B(Jump), U8(236),
                 B(LdaSmi), I8(1),
                 B(TestEqualStrict), R(6), U8(25),
-                B(JumpIfFalse), U8(136),
+                B(JumpIfFalse), U8(133),
                 B(Ldar), R(9),
                 B(TestTypeOf), U8(5),
                 B(JumpIfFalse), U8(4),
@@ -169,38 +168,37 @@ bytecodes: [
                 B(Throw),
                 B(Mov), R(context), R(21),
                 B(LdaUndefined),
-                B(Star), R(23),
-                B(Mov), R(9), R(25),
-                B(Mov), R(4), R(26),
-                B(InvokeIntrinsic), U8(Runtime::k_Call), R(25), U8(2),
-                B(Star), R(25),
-                B(Mov), R(2), R(24),
-                B(Mov), R(7), R(26),
-                B(CallJSRuntime), U8(%async_function_await_caught), R(23), U8(4),
+                B(Star), R(22),
+                B(Mov), R(9), R(24),
+                B(Mov), R(4), R(25),
+                B(InvokeIntrinsic), U8(Runtime::k_Call), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(2), R(23),
+                B(Mov), R(7), R(25),
+                B(CallJSRuntime), U8(%async_function_await_caught), R(22), U8(4),
                 B(LdaSmi), I8(1),
-                B(Mov), R(2), R(22),
-                B(Mov), R(7), R(23),
-                B(SuspendGenerator), R(22), R(0), U8(23), U8(2),
-                B(Ldar), R(23),
+                B(Mov), R(7), R(22),
+                B(SuspendGenerator), R(11), R(0), U8(22), U8(2),
+                B(Ldar), R(22),
   /*   57 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(22), U8(1),
-                B(Star), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(22), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(16), U8(2), I8(0),
-                B(Ldar), R(23),
+                B(Ldar), R(22),
                 B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(25),
-                B(Mov), R(23), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(22), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
-                B(Jump), U8(225),
-                B(Ldar), R(23),
+                B(Jump), U8(222),
+                B(Ldar), R(22),
                 B(Jump), U8(20),
                 B(Star), R(22),
                 B(Ldar), R(closure),
@@ -211,41 +209,40 @@ bytecodes: [
                 B(Ldar), R(21),
                 B(PushContext), R(22),
                 B(PopContext), R(22),
-                B(Jump), U8(101),
+                B(Jump), U8(98),
                 B(LdaUndefined),
-                B(Star), R(22),
-                B(Mov), R(9), R(24),
-                B(Mov), R(4), R(25),
-                B(InvokeIntrinsic), U8(Runtime::k_Call), R(24), U8(2),
-                B(Star), R(24),
-                B(Mov), R(2), R(23),
-                B(Mov), R(7), R(25),
-                B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(4),
+                B(Star), R(21),
+                B(Mov), R(9), R(23),
+                B(Mov), R(4), R(24),
+                B(InvokeIntrinsic), U8(Runtime::k_Call), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(2), R(22),
+                B(Mov), R(7), R(24),
+                B(CallJSRuntime), U8(%async_function_await_uncaught), R(21), U8(4),
                 B(LdaSmi), I8(2),
-                B(Mov), R(2), R(21),
-                B(Mov), R(7), R(22),
-                B(SuspendGenerator), R(21), R(0), U8(22), U8(2),
-                B(Ldar), R(22),
+                B(Mov), R(7), R(21),
+                B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
+                B(Ldar), R(21),
   /*   57 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(21), U8(1),
-                B(Star), R(22),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(21), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(21),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(19), U8(2), I8(0),
-                B(Ldar), R(22),
+                B(Ldar), R(21),
                 B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(24),
-                B(Mov), R(22), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(21), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(22), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
                 B(Jump), U8(118),
-                B(Mov), R(22), R(10),
-                B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(10), U8(1),
+                B(Mov), R(21), R(10),
+                B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(21), U8(1),
                 B(JumpIfToBooleanFalse), U8(4),
                 B(Jump), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
@@ -319,12 +316,12 @@ bytecodes: [
 ]
 constant pool: [
   Smi [102],
-  Smi [397],
-  Smi [504],
+  Smi [391],
+  Smi [495],
   TUPLE2_TYPE,
   SYMBOL_TYPE,
   SYMBOL_TYPE,
-  Smi [59],
+  Smi [56],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   Smi [24],
   Smi [7],
@@ -346,11 +343,11 @@ constant pool: [
   Smi [9],
 ]
 handlers: [
-  [62, 667, 673],
-  [65, 622, 624],
-  [71, 306, 312],
-  [74, 266, 268],
-  [373, 458, 460],
+  [62, 658, 664],
+  [65, 613, 615],
+  [71, 303, 309],
+  [74, 263, 265],
+  [370, 452, 454],
 ]
 
 ---
@@ -360,9 +357,9 @@ snippet: "
   }
   f();
 "
-frame size: 27
+frame size: 26
 parameter count: 1
-bytecode array length: 740
+bytecode array length: 731
 bytecodes: [
                 B(Mov), R(new_target), R(11),
                 B(Ldar), R(new_target),
@@ -417,39 +414,38 @@ bytecodes: [
                 B(Star), R(22),
                 B(CallRuntime), U16(Runtime::kAbort), R(22), U8(1),
   /*   40 S> */ B(LdaUndefined),
-                B(Star), R(23),
-  /*   40 E> */ B(LdaNamedProperty), R(4), U8(7), U8(14),
-                B(Star), R(25),
-                B(CallProperty0), R(25), R(4), U8(12),
-                B(Star), R(25),
-                B(Mov), R(2), R(24),
-                B(Mov), R(7), R(26),
-                B(CallJSRuntime), U8(%async_function_await_uncaught), R(23), U8(4),
+                B(Star), R(22),
+                B(LdaNamedProperty), R(4), U8(7), U8(14),
+                B(Star), R(24),
+                B(CallProperty0), R(24), R(4), U8(12),
+                B(Star), R(24),
+                B(Mov), R(2), R(23),
+                B(Mov), R(7), R(25),
+                B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(4),
                 B(LdaZero),
-                B(Mov), R(2), R(22),
-                B(Mov), R(7), R(23),
-                B(SuspendGenerator), R(22), R(0), U8(23), U8(2),
-                B(Ldar), R(23),
+                B(Mov), R(7), R(22),
+                B(SuspendGenerator), R(11), R(0), U8(22), U8(2),
+                B(Ldar), R(22),
   /*   68 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(22), U8(1),
-                B(Star), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(22), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(8), U8(2), I8(0),
-                B(Ldar), R(23),
+                B(Ldar), R(22),
   /*   40 E> */ B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(25),
-                B(Mov), R(23), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(22), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
                 B(Star), R(19),
                 B(LdaZero),
                 B(Star), R(18),
                 B(Jump), U8(101),
-                B(Mov), R(23), R(5),
-  /*   40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(5), U8(1),
+                B(Mov), R(22), R(5),
+  /*   40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(22), U8(1),
                 B(ToBooleanLogicalNot),
                 B(JumpIfFalse), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
@@ -495,15 +491,15 @@ bytecodes: [
                 B(Star), R(20),
                 B(LdaZero),
                 B(TestEqualStrict), R(6), U8(21),
-                B(JumpIfTrue), U8(253),
+                B(JumpIfTrue), U8(247),
                 B(LdaNamedProperty), R(4), U8(14), U8(22),
                 B(Star), R(9),
                 B(TestUndetectable),
                 B(JumpIfFalse), U8(4),
-                B(Jump), U8(242),
+                B(Jump), U8(236),
                 B(LdaSmi), I8(1),
                 B(TestEqualStrict), R(6), U8(25),
-                B(JumpIfFalse), U8(136),
+                B(JumpIfFalse), U8(133),
                 B(Ldar), R(9),
                 B(TestTypeOf), U8(5),
                 B(JumpIfFalse), U8(4),
@@ -516,38 +512,37 @@ bytecodes: [
                 B(Throw),
                 B(Mov), R(context), R(21),
                 B(LdaUndefined),
-                B(Star), R(23),
-                B(Mov), R(9), R(25),
-                B(Mov), R(4), R(26),
-                B(InvokeIntrinsic), U8(Runtime::k_Call), R(25), U8(2),
-                B(Star), R(25),
-                B(Mov), R(2), R(24),
-                B(Mov), R(7), R(26),
-                B(CallJSRuntime), U8(%async_function_await_caught), R(23), U8(4),
+                B(Star), R(22),
+                B(Mov), R(9), R(24),
+                B(Mov), R(4), R(25),
+                B(InvokeIntrinsic), U8(Runtime::k_Call), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(2), R(23),
+                B(Mov), R(7), R(25),
+                B(CallJSRuntime), U8(%async_function_await_caught), R(22), U8(4),
                 B(LdaSmi), I8(1),
-                B(Mov), R(2), R(22),
-                B(Mov), R(7), R(23),
-                B(SuspendGenerator), R(22), R(0), U8(23), U8(2),
-                B(Ldar), R(23),
+                B(Mov), R(7), R(22),
+                B(SuspendGenerator), R(11), R(0), U8(22), U8(2),
+                B(Ldar), R(22),
   /*   68 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(22), U8(1),
-                B(Star), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(22), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(16), U8(2), I8(0),
-                B(Ldar), R(23),
+                B(Ldar), R(22),
                 B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(25),
-                B(Mov), R(23), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(22), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
-                B(Jump), U8(234),
-                B(Ldar), R(23),
+                B(Jump), U8(231),
+                B(Ldar), R(22),
                 B(Jump), U8(20),
                 B(Star), R(22),
                 B(Ldar), R(closure),
@@ -558,41 +553,40 @@ bytecodes: [
                 B(Ldar), R(21),
                 B(PushContext), R(22),
                 B(PopContext), R(22),
-                B(Jump), U8(101),
+                B(Jump), U8(98),
                 B(LdaUndefined),
-                B(Star), R(22),
-                B(Mov), R(9), R(24),
-                B(Mov), R(4), R(25),
-                B(InvokeIntrinsic), U8(Runtime::k_Call), R(24), U8(2),
-                B(Star), R(24),
-                B(Mov), R(2), R(23),
-                B(Mov), R(7), R(25),
-                B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(4),
+                B(Star), R(21),
+                B(Mov), R(9), R(23),
+                B(Mov), R(4), R(24),
+                B(InvokeIntrinsic), U8(Runtime::k_Call), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(2), R(22),
+                B(Mov), R(7), R(24),
+                B(CallJSRuntime), U8(%async_function_await_uncaught), R(21), U8(4),
                 B(LdaSmi), I8(2),
-                B(Mov), R(2), R(21),
-                B(Mov), R(7), R(22),
-                B(SuspendGenerator), R(21), R(0), U8(22), U8(2),
-                B(Ldar), R(22),
+                B(Mov), R(7), R(21),
+                B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
+                B(Ldar), R(21),
   /*   68 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(21), U8(1),
-                B(Star), R(22),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(21), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(21),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(19), U8(2), I8(0),
-                B(Ldar), R(22),
+                B(Ldar), R(21),
                 B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(24),
-                B(Mov), R(22), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(21), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(22), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
                 B(Jump), U8(127),
-                B(Mov), R(22), R(10),
-                B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(10), U8(1),
+                B(Mov), R(21), R(10),
+                B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(21), U8(1),
                 B(JumpIfToBooleanFalse), U8(4),
                 B(Jump), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
@@ -677,12 +671,12 @@ bytecodes: [
 ]
 constant pool: [
   Smi [102],
-  Smi [400],
-  Smi [507],
+  Smi [394],
+  Smi [498],
   TUPLE2_TYPE,
   SYMBOL_TYPE,
   SYMBOL_TYPE,
-  Smi [59],
+  Smi [56],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   Smi [24],
   Smi [7],
@@ -706,11 +700,11 @@ constant pool: [
   Smi [25],
 ]
 handlers: [
-  [62, 679, 685],
-  [65, 634, 636],
-  [71, 309, 315],
-  [74, 269, 271],
-  [376, 461, 463],
+  [62, 670, 676],
+  [65, 625, 627],
+  [71, 306, 312],
+  [74, 266, 268],
+  [373, 455, 457],
 ]
 
 ---
@@ -723,9 +717,9 @@ snippet: "
   }
   f();
 "
-frame size: 27
+frame size: 26
 parameter count: 1
-bytecode array length: 730
+bytecode array length: 721
 bytecodes: [
                 B(Mov), R(new_target), R(11),
                 B(Ldar), R(new_target),
@@ -780,39 +774,38 @@ bytecodes: [
                 B(Star), R(22),
                 B(CallRuntime), U16(Runtime::kAbort), R(22), U8(1),
   /*   40 S> */ B(LdaUndefined),
-                B(Star), R(23),
-  /*   40 E> */ B(LdaNamedProperty), R(4), U8(7), U8(14),
-                B(Star), R(25),
-                B(CallProperty0), R(25), R(4), U8(12),
-                B(Star), R(25),
-                B(Mov), R(2), R(24),
-                B(Mov), R(7), R(26),
-                B(CallJSRuntime), U8(%async_function_await_uncaught), R(23), U8(4),
+                B(Star), R(22),
+                B(LdaNamedProperty), R(4), U8(7), U8(14),
+                B(Star), R(24),
+                B(CallProperty0), R(24), R(4), U8(12),
+                B(Star), R(24),
+                B(Mov), R(2), R(23),
+                B(Mov), R(7), R(25),
+                B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(4),
                 B(LdaZero),
-                B(Mov), R(2), R(22),
-                B(Mov), R(7), R(23),
-                B(SuspendGenerator), R(22), R(0), U8(23), U8(2),
-                B(Ldar), R(23),
+                B(Mov), R(7), R(22),
+                B(SuspendGenerator), R(11), R(0), U8(22), U8(2),
+                B(Ldar), R(22),
   /*  114 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(22), U8(1),
-                B(Star), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(22), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(8), U8(2), I8(0),
-                B(Ldar), R(23),
+                B(Ldar), R(22),
   /*   40 E> */ B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(25),
-                B(Mov), R(23), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(22), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
                 B(Star), R(19),
                 B(LdaZero),
                 B(Star), R(18),
                 B(Jump), U8(116),
-                B(Mov), R(23), R(5),
-  /*   40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(5), U8(1),
+                B(Mov), R(22), R(5),
+  /*   40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(22), U8(1),
                 B(ToBooleanLogicalNot),
                 B(JumpIfFalse), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
@@ -835,7 +828,7 @@ bytecodes: [
   /*  103 S> */ B(Jump), U8(8),
                 B(LdaZero),
                 B(Star), R(6),
-                B(JumpLoop), U8(162), I8(0),
+                B(JumpLoop), U8(159), I8(0),
                 B(Jump), U8(40),
                 B(Star), R(22),
                 B(Ldar), R(closure),
@@ -865,15 +858,15 @@ bytecodes: [
                 B(Star), R(20),
                 B(LdaZero),
                 B(TestEqualStrict), R(6), U8(23),
-                B(JumpIfTrue), U8(253),
+                B(JumpIfTrue), U8(247),
                 B(LdaNamedProperty), R(4), U8(14), U8(24),
                 B(Star), R(9),
                 B(TestUndetectable),
                 B(JumpIfFalse), U8(4),
-                B(Jump), U8(242),
+                B(Jump), U8(236),
                 B(LdaSmi), I8(1),
                 B(TestEqualStrict), R(6), U8(27),
-                B(JumpIfFalse), U8(136),
+                B(JumpIfFalse), U8(133),
                 B(Ldar), R(9),
                 B(TestTypeOf), U8(5),
                 B(JumpIfFalse), U8(4),
@@ -886,38 +879,37 @@ bytecodes: [
                 B(Throw),
                 B(Mov), R(context), R(21),
                 B(LdaUndefined),
-                B(Star), R(23),
-                B(Mov), R(9), R(25),
-                B(Mov), R(4), R(26),
-                B(InvokeIntrinsic), U8(Runtime::k_Call), R(25), U8(2),
-                B(Star), R(25),
-                B(Mov), R(2), R(24),
-                B(Mov), R(7), R(26),
-                B(CallJSRuntime), U8(%async_function_await_caught), R(23), U8(4),
+                B(Star), R(22),
+                B(Mov), R(9), R(24),
+                B(Mov), R(4), R(25),
+                B(InvokeIntrinsic), U8(Runtime::k_Call), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(2), R(23),
+                B(Mov), R(7), R(25),
+                B(CallJSRuntime), U8(%async_function_await_caught), R(22), U8(4),
                 B(LdaSmi), I8(1),
-                B(Mov), R(2), R(22),
-                B(Mov), R(7), R(23),
-                B(SuspendGenerator), R(22), R(0), U8(23), U8(2),
-                B(Ldar), R(23),
+                B(Mov), R(7), R(22),
+                B(SuspendGenerator), R(11), R(0), U8(22), U8(2),
+                B(Ldar), R(22),
   /*  114 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(22), U8(1),
-                B(Star), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(22), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(16), U8(2), I8(0),
-                B(Ldar), R(23),
+                B(Ldar), R(22),
                 B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(25),
-                B(Mov), R(23), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
+                B(Star), R(24),
+                B(Mov), R(22), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
-                B(Jump), U8(225),
-                B(Ldar), R(23),
+                B(Jump), U8(222),
+                B(Ldar), R(22),
                 B(Jump), U8(20),
                 B(Star), R(22),
                 B(Ldar), R(closure),
@@ -928,41 +920,40 @@ bytecodes: [
                 B(Ldar), R(21),
                 B(PushContext), R(22),
                 B(PopContext), R(22),
-                B(Jump), U8(101),
+                B(Jump), U8(98),
                 B(LdaUndefined),
-                B(Star), R(22),
-                B(Mov), R(9), R(24),
-                B(Mov), R(4), R(25),
-                B(InvokeIntrinsic), U8(Runtime::k_Call), R(24), U8(2),
-                B(Star), R(24),
-                B(Mov), R(2), R(23),
-                B(Mov), R(7), R(25),
-                B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(4),
+                B(Star), R(21),
+                B(Mov), R(9), R(23),
+                B(Mov), R(4), R(24),
+                B(InvokeIntrinsic), U8(Runtime::k_Call), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(2), R(22),
+                B(Mov), R(7), R(24),
+                B(CallJSRuntime), U8(%async_function_await_uncaught), R(21), U8(4),
                 B(LdaSmi), I8(2),
-                B(Mov), R(2), R(21),
-                B(Mov), R(7), R(22),
-                B(SuspendGenerator), R(21), R(0), U8(22), U8(2),
-                B(Ldar), R(22),
+                B(Mov), R(7), R(21),
+                B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
+                B(Ldar), R(21),
   /*  114 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(22),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(21), U8(1),
-                B(Star), R(22),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(21), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(21),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(19), U8(2), I8(0),
-                B(Ldar), R(22),
+                B(Ldar), R(21),
                 B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(24),
-                B(Mov), R(22), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(21), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(22), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
                 B(Jump), U8(118),
-                B(Mov), R(22), R(10),
-                B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(10), U8(1),
+                B(Mov), R(21), R(10),
+                B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(21), U8(1),
                 B(JumpIfToBooleanFalse), U8(4),
                 B(Jump), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
@@ -1036,12 +1027,12 @@ bytecodes: [
 ]
 constant pool: [
   Smi [102],
-  Smi [415],
-  Smi [522],
+  Smi [409],
+  Smi [513],
   TUPLE2_TYPE,
   SYMBOL_TYPE,
   SYMBOL_TYPE,
-  Smi [59],
+  Smi [56],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   Smi [24],
   Smi [7],
@@ -1063,11 +1054,11 @@ constant pool: [
   Smi [9],
 ]
 handlers: [
-  [62, 685, 691],
-  [65, 640, 642],
-  [71, 324, 330],
-  [74, 284, 286],
-  [391, 476, 478],
+  [62, 676, 682],
+  [65, 631, 633],
+  [71, 321, 327],
+  [74, 281, 283],
+  [388, 470, 472],
 ]
 
 ---

test/cctest/interpreter/bytecode_expectations/ForOfLoop.golden

@@ -643,7 +643,7 @@ snippet: "
 "
 frame size: 24
 parameter count: 2
-bytecode array length: 437
+bytecode array length: 434
 bytecodes: [
                 B(Mov), R(new_target), R(11),
                 B(Ldar), R(new_target),
@@ -670,24 +670,23 @@ bytecodes: [
                 B(Star), R(11),
                 B(Mov), R(context), R(17),
                 B(LdaZero),
-                B(Mov), R(3), R(19),
                 B(Mov), R(3), R(18),
-  /*   11 E> */ B(SuspendGenerator), R(18), R(0), U8(19), U8(0),
-                B(Ldar), R(19),
+  /*   11 E> */ B(SuspendGenerator), R(11), R(0), U8(18), U8(0),
+                B(Ldar), R(18),
   /*   55 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(19),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(18),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(18), U8(1),
-                B(Star), R(19),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(18), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(18),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(1), U8(2), I8(0),
-                B(Ldar), R(19),
+                B(Ldar), R(18),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(21),
-                B(Mov), R(19), R(20),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(20), U8(2),
+                B(Star), R(20),
+                B(Mov), R(18), R(19),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(19), U8(2),
                 B(Star), R(16),
                 B(LdaZero),
                 B(Star), R(15),
@@ -834,7 +833,7 @@ bytecodes: [
   /*   55 S> */ B(Return),
 ]
 constant pool: [
-  Smi [58],
+  Smi [55],
   Smi [24],
   Smi [7],
   SYMBOL_TYPE,
@@ -851,10 +850,10 @@ constant pool: [
   Smi [9],
 ]
 handlers: [
-  [60, 398, 404],
-  [123, 241, 247],
-  [126, 205, 207],
-  [307, 317, 319],
+  [60, 395, 401],
+  [120, 238, 244],
+  [123, 202, 204],
+  [304, 314, 316],
 ]
 
 ---
@@ -864,9 +863,9 @@ snippet: "
   }
   f([1, 2, 3]);
 "
-frame size: 25
+frame size: 24
 parameter count: 2
-bytecode array length: 534
+bytecode array length: 528
 bytecodes: [
                 B(Mov), R(new_target), R(10),
                 B(Ldar), R(new_target),
@@ -893,24 +892,23 @@ bytecodes: [
                 B(Star), R(10),
                 B(Mov), R(context), R(16),
                 B(LdaZero),
-                B(Mov), R(2), R(18),
                 B(Mov), R(2), R(17),
-  /*   11 E> */ B(SuspendGenerator), R(17), R(0), U8(18), U8(0),
-                B(Ldar), R(18),
+  /*   11 E> */ B(SuspendGenerator), R(10), R(0), U8(17), U8(0),
+                B(Ldar), R(17),
   /*   49 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(10), R(0), U8(18),
+                B(RestoreGeneratorRegisters), R(10), R(0), U8(17),
                 B(LdaSmi), I8(-2),
                 B(Star), R(11),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(17), U8(1),
-                B(Star), R(18),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(17), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(10), U8(1),
+                B(Star), R(17),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(10), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(18),
+                B(Ldar), R(17),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(20),
-                B(Mov), R(18), R(19),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(19), U8(2),
+                B(Star), R(19),
+                B(Mov), R(17), R(18),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(18), U8(2),
                 B(Star), R(15),
                 B(LdaZero),
                 B(Star), R(14),
@@ -944,7 +942,7 @@ bytecodes: [
                 B(JumpIfFalse), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
                 B(LdaNamedProperty), R(5), U8(7), U8(11),
-                B(JumpIfToBooleanTrue), U8(92),
+                B(JumpIfToBooleanTrue), U8(89),
                 B(LdaNamedProperty), R(5), U8(8), U8(13),
                 B(Star), R(7),
                 B(LdaSmi), I8(2),
@@ -953,35 +951,34 @@ bytecodes: [
   /*   21 E> */ B(StackCheck),
                 B(Mov), R(3), R(0),
   /*   40 S> */ B(LdaFalse),
-                B(Star), R(23),
-                B(Mov), R(3), R(22),
-  /*   46 E> */ B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(22), U8(2),
                 B(Star), R(22),
+                B(Mov), R(0), R(21),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(21), U8(2),
+                B(Star), R(21),
                 B(LdaSmi), I8(1),
-                B(Mov), R(2), R(21),
-                B(SuspendGenerator), R(21), R(0), U8(22), U8(0),
-                B(Ldar), R(22),
+                B(SuspendGenerator), R(10), R(0), U8(21), U8(0),
+                B(Ldar), R(21),
   /*   49 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(10), R(0), U8(22),
+                B(RestoreGeneratorRegisters), R(10), R(0), U8(21),
                 B(LdaSmi), I8(-2),
                 B(Star), R(11),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(21), U8(1),
-                B(Star), R(22),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(21), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(10), U8(1),
+                B(Star), R(21),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(10), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(9), U8(2), I8(0),
-                B(Ldar), R(22),
+                B(Ldar), R(21),
   /*   40 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(24),
-                B(Mov), R(22), R(23),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(23), U8(2),
+                B(Star), R(23),
+                B(Mov), R(21), R(22),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(22), U8(2),
                 B(Star), R(18),
                 B(LdaZero),
                 B(Star), R(17),
                 B(Jump), U8(56),
                 B(LdaZero),
                 B(Star), R(6),
-                B(JumpLoop), U8(138), I8(0),
+                B(JumpLoop), U8(135), I8(0),
                 B(Jump), U8(36),
                 B(Star), R(21),
                 B(Ldar), R(closure),
@@ -1095,12 +1092,12 @@ bytecodes: [
   /*   49 S> */ B(Return),
 ]
 constant pool: [
-  Smi [58],
-  Smi [132],
+  Smi [55],
+  Smi [129],
   Smi [24],
   Smi [7],
   SYMBOL_TYPE,
-  Smi [91],
+  Smi [88],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
@@ -1113,15 +1110,15 @@ constant pool: [
   FIXED_ARRAY_TYPE,
   Smi [6],
   Smi [14],
-  Smi [392],
+  Smi [389],
   Smi [6],
   Smi [9],
 ]
 handlers: [
-  [60, 495, 501],
-  [123, 326, 332],
-  [126, 290, 292],
-  [393, 403, 405],
+  [60, 489, 495],
+  [120, 320, 326],
+  [123, 284, 286],
+  [387, 397, 399],
 ]
 
 ---
@@ -1343,9 +1340,9 @@ snippet: "
   }
   f([1, 2, 3]);
 "
-frame size: 28
+frame size: 27
 parameter count: 2
-bytecode array length: 549
+bytecode array length: 546
 bytecodes: [
                 B(Mov), R(new_target), R(11),
                 B(Ldar), R(new_target),
@@ -1405,7 +1402,7 @@ bytecodes: [
                 B(JumpIfFalse), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(6), U8(1),
                 B(LdaNamedProperty), R(6), U8(4), U8(11),
-                B(JumpIfToBooleanTrue), U8(98),
+                B(JumpIfToBooleanTrue), U8(95),
                 B(LdaNamedProperty), R(6), U8(5), U8(13),
                 B(Star), R(8),
                 B(LdaSmi), I8(2),
@@ -1414,37 +1411,36 @@ bytecodes: [
   /*   26 E> */ B(StackCheck),
                 B(Mov), R(4), R(0),
   /*   45 S> */ B(LdaUndefined),
-                B(Star), R(24),
-                B(Mov), R(2), R(25),
-                B(Mov), R(4), R(26),
-                B(Mov), R(3), R(27),
-  /*   51 E> */ B(CallJSRuntime), U8(%async_function_await_uncaught), R(24), U8(4),
+                B(Star), R(23),
+                B(Mov), R(2), R(24),
+                B(Mov), R(4), R(25),
+                B(Mov), R(3), R(26),
+  /*   51 E> */ B(CallJSRuntime), U8(%async_function_await_uncaught), R(23), U8(4),
                 B(LdaZero),
-                B(Mov), R(2), R(23),
-                B(Mov), R(3), R(24),
-                B(SuspendGenerator), R(23), R(0), U8(24), U8(2),
-                B(Ldar), R(24),
+                B(Mov), R(3), R(23),
+                B(SuspendGenerator), R(11), R(0), U8(23), U8(2),
+                B(Ldar), R(23),
   /*   54 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(11), R(0), U8(24),
+                B(RestoreGeneratorRegisters), R(11), R(0), U8(23),
                 B(LdaSmi), I8(-2),
                 B(Star), R(12),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(23), U8(1),
-                B(Star), R(24),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(23), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
+                B(Star), R(23),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(6), U8(2), I8(0),
-                B(Ldar), R(24),
+                B(Ldar), R(23),
   /*   45 E> */ B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(26),
-                B(Mov), R(24), R(25),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(25), U8(2),
+                B(Star), R(25),
+                B(Mov), R(23), R(24),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(24), U8(2),
                 B(Star), R(20),
                 B(LdaZero),
                 B(Star), R(19),
                 B(Jump), U8(60),
                 B(LdaZero),
                 B(Star), R(7),
-                B(JumpLoop), U8(144), I8(0),
+                B(JumpLoop), U8(141), I8(0),
                 B(Jump), U8(40),
                 B(Star), R(23),
                 B(Ldar), R(closure),
@@ -1587,7 +1583,7 @@ bytecodes: [
 constant pool: [
   Smi [88],
   SYMBOL_TYPE,
-  Smi [97],
+  Smi [94],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
@@ -1605,10 +1601,10 @@ constant pool: [
   Smi [9],
 ]
 handlers: [
-  [70, 504, 510],
-  [73, 459, 461],
-  [79, 292, 298],
-  [82, 252, 254],
-  [359, 369, 371],
+  [70, 501, 507],
+  [73, 456, 458],
+  [79, 289, 295],
+  [82, 249, 251],
+  [356, 366, 368],
 ]
 

test/cctest/interpreter/bytecode_expectations/Generators.golden

@@ -11,9 +11,9 @@ snippet: "
   function* f() { }
   f();
 "
-frame size: 11
+frame size: 10
 parameter count: 1
-bytecode array length: 165
+bytecode array length: 162
 bytecodes: [
                 B(Mov), R(new_target), R(1),
                 B(Ldar), R(new_target),
@@ -36,24 +36,23 @@ bytecodes: [
                 B(Star), R(1),
                 B(Mov), R(context), R(6),
                 B(LdaZero),
-                B(Mov), R(0), R(8),
                 B(Mov), R(0), R(7),
-  /*   11 E> */ B(SuspendGenerator), R(7), R(0), U8(8), U8(0),
-                B(Ldar), R(8),
+  /*   11 E> */ B(SuspendGenerator), R(1), R(0), U8(7), U8(0),
+                B(Ldar), R(7),
   /*   16 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(1), R(0), U8(8),
+                B(RestoreGeneratorRegisters), R(1), R(0), U8(7),
                 B(LdaSmi), I8(-2),
                 B(Star), R(2),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(7), U8(1),
-                B(Star), R(8),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(7), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(1), U8(1),
+                B(Star), R(7),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(1), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(1), U8(2), I8(0),
-                B(Ldar), R(8),
+                B(Ldar), R(7),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(10),
-                B(Mov), R(8), R(9),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(9), U8(2),
+                B(Star), R(9),
+                B(Mov), R(7), R(8),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(8), U8(2),
                 B(Star), R(5),
                 B(LdaZero),
                 B(Star), R(4),
@@ -90,14 +89,14 @@ bytecodes: [
   /*   16 S> */ B(Return),
 ]
 constant pool: [
-  Smi [50],
+  Smi [47],
   Smi [24],
   Smi [7],
   Smi [6],
   Smi [9],
 ]
 handlers: [
-  [52, 126, 132],
+  [52, 123, 129],
 ]
 
 ---
@@ -105,9 +104,9 @@ snippet: "
   function* f() { yield 42 }
   f();
 "
-frame size: 11
+frame size: 10
 parameter count: 1
-bytecode array length: 233
+bytecode array length: 227
 bytecodes: [
                 B(Mov), R(new_target), R(1),
                 B(Ldar), R(new_target),
@@ -130,52 +129,50 @@ bytecodes: [
                 B(Star), R(1),
                 B(Mov), R(context), R(6),
                 B(LdaZero),
-                B(Mov), R(0), R(8),
                 B(Mov), R(0), R(7),
-  /*   11 E> */ B(SuspendGenerator), R(7), R(0), U8(8), U8(0),
-                B(Ldar), R(8),
+  /*   11 E> */ B(SuspendGenerator), R(1), R(0), U8(7), U8(0),
+                B(Ldar), R(7),
   /*   25 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(1), R(0), U8(8),
+                B(RestoreGeneratorRegisters), R(1), R(0), U8(7),
                 B(LdaSmi), I8(-2),
                 B(Star), R(2),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(7), U8(1),
-                B(Star), R(8),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(7), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(1), U8(1),
+                B(Star), R(7),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(1), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(8),
+                B(Ldar), R(7),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(10),
-                B(Mov), R(8), R(9),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(9), U8(2),
+                B(Star), R(9),
+                B(Mov), R(7), R(8),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(8), U8(2),
                 B(Star), R(5),
                 B(LdaZero),
                 B(Star), R(4),
-                B(Jump), U8(99),
+                B(Jump), U8(96),
   /*   16 S> */ B(LdaSmi), I8(42),
-                B(Star), R(8),
+                B(Star), R(7),
                 B(LdaFalse),
-                B(Star), R(9),
-  /*   16 E> */ B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(8), U8(2),
                 B(Star), R(8),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(7), U8(2),
+                B(Star), R(7),
                 B(LdaSmi), I8(1),
-                B(Mov), R(0), R(7),
-                B(SuspendGenerator), R(7), R(0), U8(8), U8(0),
-                B(Ldar), R(8),
+                B(SuspendGenerator), R(1), R(0), U8(7), U8(0),
+                B(Ldar), R(7),
   /*   25 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(1), R(0), U8(8),
+                B(RestoreGeneratorRegisters), R(1), R(0), U8(7),
                 B(LdaSmi), I8(-2),
                 B(Star), R(2),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(7), U8(1),
-                B(Star), R(8),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(7), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(1), U8(1),
+                B(Star), R(7),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(1), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(4), U8(2), I8(0),
-                B(Ldar), R(8),
+                B(Ldar), R(7),
   /*   16 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(10),
-                B(Mov), R(8), R(9),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(9), U8(2),
+                B(Star), R(9),
+                B(Mov), R(7), R(8),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(8), U8(2),
                 B(Star), R(5),
                 B(LdaZero),
                 B(Star), R(4),
@@ -212,8 +209,8 @@ bytecodes: [
   /*   25 S> */ B(Return),
 ]
 constant pool: [
-  Smi [50],
-  Smi [118],
+  Smi [47],
+  Smi [112],
   Smi [24],
   Smi [7],
   Smi [24],
@@ -222,7 +219,7 @@ constant pool: [
   Smi [9],
 ]
 handlers: [
-  [52, 194, 200],
+  [52, 188, 194],
 ]
 
 ---
@@ -230,9 +227,9 @@ snippet: "
   function* f() { for (let x of [42]) yield x }
   f();
 "
-frame size: 24
+frame size: 23
 parameter count: 1
-bytecode array length: 528
+bytecode array length: 522
 bytecodes: [
                 B(Mov), R(new_target), R(10),
                 B(Ldar), R(new_target),
@@ -255,24 +252,23 @@ bytecodes: [
                 B(Star), R(10),
                 B(Mov), R(context), R(15),
                 B(LdaZero),
-                B(Mov), R(2), R(17),
                 B(Mov), R(2), R(16),
-  /*   11 E> */ B(SuspendGenerator), R(16), R(0), U8(17), U8(0),
-                B(Ldar), R(17),
+  /*   11 E> */ B(SuspendGenerator), R(10), R(0), U8(16), U8(0),
+                B(Ldar), R(16),
   /*   44 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(10), R(0), U8(17),
+                B(RestoreGeneratorRegisters), R(10), R(0), U8(16),
                 B(LdaSmi), I8(-2),
                 B(Star), R(11),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(16), U8(1),
-                B(Star), R(17),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(16), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(10), U8(1),
+                B(Star), R(16),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(10), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(17),
+                B(Ldar), R(16),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(19),
-                B(Mov), R(17), R(18),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(18), U8(2),
+                B(Star), R(18),
+                B(Mov), R(16), R(17),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(17), U8(2),
                 B(Star), R(14),
                 B(LdaZero),
                 B(Star), R(13),
@@ -306,7 +302,7 @@ bytecodes: [
                 B(JumpIfFalse), U8(7),
                 B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
                 B(LdaNamedProperty), R(5), U8(8), U8(12),
-                B(JumpIfToBooleanTrue), U8(92),
+                B(JumpIfToBooleanTrue), U8(89),
                 B(LdaNamedProperty), R(5), U8(9), U8(14),
                 B(Star), R(7),
                 B(LdaSmi), I8(2),
@@ -315,35 +311,34 @@ bytecodes: [
   /*   16 E> */ B(StackCheck),
                 B(Mov), R(3), R(0),
   /*   36 S> */ B(LdaFalse),
-                B(Star), R(22),
-                B(Mov), R(3), R(21),
-  /*   42 E> */ B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(21), U8(2),
                 B(Star), R(21),
+                B(Mov), R(0), R(20),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(20), U8(2),
+                B(Star), R(20),
                 B(LdaSmi), I8(1),
-                B(Mov), R(2), R(20),
-                B(SuspendGenerator), R(20), R(0), U8(21), U8(0),
-                B(Ldar), R(21),
+                B(SuspendGenerator), R(10), R(0), U8(20), U8(0),
+                B(Ldar), R(20),
   /*   44 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(10), R(0), U8(21),
+                B(RestoreGeneratorRegisters), R(10), R(0), U8(20),
                 B(LdaSmi), I8(-2),
                 B(Star), R(11),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(20), U8(1),
-                B(Star), R(21),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(20), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(10), U8(1),
+                B(Star), R(20),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(10), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(10), U8(2), I8(0),
-                B(Ldar), R(21),
+                B(Ldar), R(20),
   /*   36 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(23),
-                B(Mov), R(21), R(22),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(22), U8(2),
+                B(Star), R(22),
+                B(Mov), R(20), R(21),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(21), U8(2),
                 B(Star), R(17),
                 B(LdaZero),
                 B(Star), R(16),
                 B(Jump), U8(56),
                 B(LdaZero),
                 B(Star), R(6),
-                B(JumpLoop), U8(138), I8(0),
+                B(JumpLoop), U8(135), I8(0),
                 B(Jump), U8(36),
                 B(Star), R(20),
                 B(Ldar), R(closure),
@@ -457,13 +452,13 @@ bytecodes: [
   /*   44 S> */ B(Return),
 ]
 constant pool: [
-  Smi [50],
-  Smi [126],
+  Smi [47],
+  Smi [123],
   Smi [24],
   Smi [7],
   TUPLE2_TYPE,
   SYMBOL_TYPE,
-  Smi [91],
+  Smi [88],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
@@ -476,15 +471,15 @@ constant pool: [
   FIXED_ARRAY_TYPE,
   Smi [6],
   Smi [14],
-  Smi [394],
+  Smi [391],
   Smi [6],
   Smi [9],
 ]
 handlers: [
-  [52, 489, 495],
-  [115, 320, 326],
-  [118, 284, 286],
-  [387, 397, 399],
+  [52, 483, 489],
+  [112, 314, 320],
+  [115, 278, 280],
+  [381, 391, 393],
 ]
 
 ---
@@ -495,7 +490,7 @@ snippet: "
 "
 frame size: 19
 parameter count: 1
-bytecode array length: 581
+bytecode array length: 575
 bytecodes: [
                 B(Mov), R(new_target), R(9),
                 B(Ldar), R(new_target),
@@ -518,24 +513,23 @@ bytecodes: [
                 B(Star), R(9),
                 B(Mov), R(context), R(14),
                 B(LdaZero),
-                B(Mov), R(0), R(16),
                 B(Mov), R(0), R(15),
-  /*   38 E> */ B(SuspendGenerator), R(15), R(0), U8(16), U8(0),
-                B(Ldar), R(16),
+  /*   38 E> */ B(SuspendGenerator), R(9), R(0), U8(15), U8(0),
+                B(Ldar), R(15),
   /*   54 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(9), R(0), U8(16),
+                B(RestoreGeneratorRegisters), R(9), R(0), U8(15),
                 B(LdaSmi), I8(-2),
                 B(Star), R(10),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(15), U8(1),
-                B(Star), R(16),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(15), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(9), U8(1),
+                B(Star), R(15),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(9), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(16),
+                B(Ldar), R(15),
   /*   38 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(18),
-                B(Mov), R(16), R(17),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(17), U8(2),
+                B(Star), R(17),
+                B(Mov), R(15), R(16),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(16), U8(2),
                 B(Star), R(13),
                 B(LdaZero),
                 B(Star), R(12),
@@ -672,22 +666,21 @@ bytecodes: [
                 B(Jump), U8(2),
                 B(LdaNamedProperty), R(3), U8(13), U8(29),
                 B(JumpIfToBooleanFalse), U8(4),
-                B(Jump), U8(48),
+                B(Jump), U8(45),
                 B(LdaSmi), I8(1),
-                B(Mov), R(0), R(15),
-                B(Mov), R(3), R(16),
-                B(SuspendGenerator), R(15), R(0), U8(16), U8(1),
-                B(Ldar), R(16),
+                B(Mov), R(3), R(15),
+                B(SuspendGenerator), R(9), R(0), U8(15), U8(1),
+                B(Ldar), R(15),
   /*   54 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(9), R(0), U8(16),
+                B(RestoreGeneratorRegisters), R(9), R(0), U8(15),
                 B(LdaSmi), I8(-2),
                 B(Star), R(10),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(15), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(9), U8(1),
                 B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
                 B(Star), R(1),
                 B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(Star), R(2),
-                B(Wide), B(JumpLoop), U16(340), I16(0),
+                B(Wide), B(JumpLoop), U16(337), I16(0),
                 B(LdaSmi), I8(1),
                 B(TestEqualStrict), R(2), U8(31),
                 B(JumpIfFalse), U8(22),
@@ -734,13 +727,13 @@ bytecodes: [
   /*   54 S> */ B(Return),
 ]
 constant pool: [
-  Smi [50],
-  Smi [130],
+  Smi [47],
+  Smi [127],
   Smi [24],
   Smi [7],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["g"],
   SYMBOL_TYPE,
-  Smi [313],
+  Smi [310],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["throw"],
@@ -749,13 +742,13 @@ constant pool: [
   FIXED_ARRAY_TYPE,
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
   ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
-  Smi [447],
-  Smi [308],
+  Smi [444],
+  Smi [305],
   Smi [6],
   Smi [9],
 ]
 handlers: [
-  [52, 542, 548],
-  [335, 345, 347],
+  [52, 536, 542],
+  [332, 342, 344],
 ]
 

test/cctest/interpreter/bytecode_expectations/Modules.golden

@@ -11,9 +11,9 @@ top level: yes
 snippet: "
   import \"bar\";
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 132
+bytecode array length: 128
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -41,27 +41,25 @@ bytecodes: [
                 B(Star), R(0),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   13 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   13 S> */ B(Return),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
                 B(StaCurrentContextSlot), U8(5),
                 B(LdaCurrentContextSlot), U8(5),
                 B(Star), R(4),
@@ -71,7 +69,7 @@ bytecodes: [
   /*   13 S> */ B(Return),
 ]
 constant pool: [
-  Smi [63],
+  Smi [59],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -83,9 +81,9 @@ handlers: [
 snippet: "
   import {foo} from \"bar\";
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 132
+bytecode array length: 128
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -113,27 +111,25 @@ bytecodes: [
                 B(Star), R(0),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   24 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   24 S> */ B(Return),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
                 B(StaCurrentContextSlot), U8(5),
                 B(LdaCurrentContextSlot), U8(5),
                 B(Star), R(4),
@@ -143,7 +139,7 @@ bytecodes: [
   /*   24 S> */ B(Return),
 ]
 constant pool: [
-  Smi [63],
+  Smi [59],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -157,9 +153,9 @@ snippet: "
   goo(42);
   { let x; { goo(42) } };
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 194
+bytecode array length: 190
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -187,25 +183,23 @@ bytecodes: [
                 B(Star), R(0),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   64 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   64 S> */ B(Return),
   /*   32 S> */ B(LdaModuleVariable), I8(-1), U8(0),
                 B(JumpIfNotHole), U8(11),
@@ -242,7 +236,7 @@ bytecodes: [
   /*   64 S> */ B(Return),
 ]
 constant pool: [
-  Smi [63],
+  Smi [59],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -258,9 +252,9 @@ snippet: "
   foo++;
   { let x; { foo++ } };
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 174
+bytecode array length: 170
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -288,25 +282,23 @@ bytecodes: [
                 B(Star), R(0),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   49 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   49 S> */ B(Return),
   /*   17 S> */ B(LdaSmi), I8(42),
   /*   17 E> */ B(StaModuleVariable), I8(1), U8(0),
@@ -336,7 +328,7 @@ bytecodes: [
   /*   49 S> */ B(Return),
 ]
 constant pool: [
-  Smi [63],
+  Smi [59],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -351,9 +343,9 @@ snippet: "
   foo++;
   { let x; { foo++ } };
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 178
+bytecode array length: 174
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -383,25 +375,23 @@ bytecodes: [
   /*    0 E> */ B(StackCheck),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   49 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   49 S> */ B(Return),
   /*   17 S> */ B(LdaSmi), I8(42),
   /*   17 E> */ B(StaModuleVariable), I8(1), U8(0),
@@ -431,7 +421,7 @@ bytecodes: [
   /*   49 S> */ B(Return),
 ]
 constant pool: [
-  Smi [67],
+  Smi [63],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -446,9 +436,9 @@ snippet: "
   foo++;
   { let x; { foo++ } };
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 182
+bytecode array length: 178
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -478,25 +468,23 @@ bytecodes: [
   /*    0 E> */ B(StackCheck),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   51 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   51 S> */ B(Return),
   /*   19 S> */ B(LdaSmi), I8(42),
   /*   19 E> */ B(StaModuleVariable), I8(1), U8(0),
@@ -526,7 +514,7 @@ bytecodes: [
   /*   51 S> */ B(Return),
 ]
 constant pool: [
-  Smi [67],
+  Smi [63],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -539,9 +527,9 @@ handlers: [
 snippet: "
   export default (function () {});
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 143
+bytecode array length: 139
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -571,27 +559,25 @@ bytecodes: [
   /*    0 E> */ B(StackCheck),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   32 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   32 S> */ B(Return),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
                 B(StaCurrentContextSlot), U8(5),
                 B(CreateClosure), U8(4), U8(3), U8(0),
                 B(StaModuleVariable), I8(1), U8(0),
@@ -603,7 +589,7 @@ bytecodes: [
   /*   32 S> */ B(Return),
 ]
 constant pool: [
-  Smi [67],
+  Smi [63],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -618,7 +604,7 @@ snippet: "
 "
 frame size: 9
 parameter count: 2
-bytecode array length: 176
+bytecode array length: 172
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -648,27 +634,25 @@ bytecodes: [
   /*    0 E> */ B(StackCheck),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   26 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   26 S> */ B(Return),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
                 B(StaCurrentContextSlot), U8(5),
                 B(CreateClosure), U8(4), U8(3), U8(0),
                 B(Star), R(4),
@@ -692,7 +676,7 @@ bytecodes: [
   /*   26 S> */ B(Return),
 ]
 constant pool: [
-  Smi [67],
+  Smi [63],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -705,9 +689,9 @@ handlers: [
 snippet: "
   export {foo as goo} from \"bar\"
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 132
+bytecode array length: 128
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -735,27 +719,25 @@ bytecodes: [
                 B(Star), R(0),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   30 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   30 S> */ B(Return),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
                 B(StaCurrentContextSlot), U8(5),
                 B(LdaCurrentContextSlot), U8(5),
                 B(Star), R(4),
@@ -765,7 +747,7 @@ bytecodes: [
   /*   30 S> */ B(Return),
 ]
 constant pool: [
-  Smi [63],
+  Smi [59],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -777,9 +759,9 @@ handlers: [
 snippet: "
   export * from \"bar\"
 "
-frame size: 8
+frame size: 7
 parameter count: 2
-bytecode array length: 132
+bytecode array length: 128
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -807,27 +789,25 @@ bytecodes: [
                 B(Star), R(0),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   19 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   19 S> */ B(Return),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
                 B(StaCurrentContextSlot), U8(5),
                 B(LdaCurrentContextSlot), U8(5),
                 B(Star), R(4),
@@ -837,7 +817,7 @@ bytecodes: [
   /*   19 S> */ B(Return),
 ]
 constant pool: [
-  Smi [63],
+  Smi [59],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],
@@ -852,7 +832,7 @@ snippet: "
 "
 frame size: 8
 parameter count: 2
-bytecode array length: 170
+bytecode array length: 166
 bytecodes: [
                 B(Mov), R(new_target), R(0),
                 B(Ldar), R(new_target),
@@ -884,25 +864,23 @@ bytecodes: [
   /*    0 E> */ B(StackCheck),
                 B(LdaImmutableCurrentContextSlot), U8(4),
                 B(Star), R(4),
-                B(LdaImmutableCurrentContextSlot), U8(4),
-                B(Star), R(5),
                 B(LdaZero),
-  /*    0 E> */ B(SuspendGenerator), R(4), R(0), U8(5), U8(0),
-                B(Ldar), R(5),
+  /*    0 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
+                B(Ldar), R(4),
   /*   45 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(0), R(0), U8(5),
+                B(RestoreGeneratorRegisters), R(0), R(0), U8(4),
                 B(LdaSmi), I8(-2),
                 B(Star), R(1),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(4), U8(1),
-                B(Star), R(5),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(4), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(0), U8(1),
+                B(Star), R(4),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(5),
+                B(Ldar), R(4),
   /*    0 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(7),
-                B(Mov), R(5), R(6),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(6), U8(2),
+                B(Star), R(6),
+                B(Mov), R(4), R(5),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(5), U8(2),
   /*   45 S> */ B(Return),
   /*   27 S> */ B(LdaImmutableCurrentContextSlot), U8(5),
                 B(Star), R(5),
@@ -924,7 +902,7 @@ bytecodes: [
   /*   45 S> */ B(Return),
 ]
 constant pool: [
-  Smi [73],
+  Smi [69],
   FIXED_ARRAY_TYPE,
   Smi [18],
   Smi [7],

test/cctest/interpreter/bytecode_expectations/StandardForLoop.golden

@@ -271,9 +271,9 @@ snippet: "
   }
   f();
 "
-frame size: 17
+frame size: 16
 parameter count: 1
-bytecode array length: 245
+bytecode array length: 242
 bytecodes: [
                 B(Mov), R(new_target), R(7),
                 B(Ldar), R(new_target),
@@ -296,24 +296,23 @@ bytecodes: [
                 B(Star), R(7),
                 B(Mov), R(context), R(12),
                 B(LdaZero),
-                B(Mov), R(3), R(14),
                 B(Mov), R(3), R(13),
-  /*   11 E> */ B(SuspendGenerator), R(13), R(0), U8(14), U8(0),
-                B(Ldar), R(14),
+  /*   11 E> */ B(SuspendGenerator), R(7), R(0), U8(13), U8(0),
+                B(Ldar), R(13),
   /*   62 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(7), R(0), U8(14),
+                B(RestoreGeneratorRegisters), R(7), R(0), U8(13),
                 B(LdaSmi), I8(-2),
                 B(Star), R(8),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(13), U8(1),
-                B(Star), R(14),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(13), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(7), U8(1),
+                B(Star), R(13),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(7), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(1), U8(2), I8(0),
-                B(Ldar), R(14),
+                B(Ldar), R(13),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(16),
-                B(Mov), R(14), R(15),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(15), U8(2),
+                B(Star), R(15),
+                B(Mov), R(13), R(14),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(14), U8(2),
                 B(Star), R(11),
                 B(LdaZero),
                 B(Star), R(10),
@@ -388,14 +387,14 @@ bytecodes: [
   /*   62 S> */ B(Return),
 ]
 constant pool: [
-  Smi [50],
+  Smi [47],
   Smi [24],
   Smi [7],
   Smi [6],
   Smi [9],
 ]
 handlers: [
-  [52, 206, 212],
+  [52, 203, 209],
 ]
 
 ---
@@ -405,9 +404,9 @@ snippet: "
   }
   f();
 "
-frame size: 16
+frame size: 15
 parameter count: 1
-bytecode array length: 351
+bytecode array length: 345
 bytecodes: [
                 B(Mov), R(new_target), R(6),
                 B(Ldar), R(new_target),
@@ -430,28 +429,27 @@ bytecodes: [
                 B(Star), R(6),
                 B(Mov), R(context), R(11),
                 B(LdaZero),
-                B(Mov), R(2), R(13),
                 B(Mov), R(2), R(12),
-  /*   11 E> */ B(SuspendGenerator), R(12), R(0), U8(13), U8(0),
-                B(Ldar), R(13),
+  /*   11 E> */ B(SuspendGenerator), R(6), R(0), U8(12), U8(0),
+                B(Ldar), R(12),
   /*   56 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(6), R(0), U8(13),
+                B(RestoreGeneratorRegisters), R(6), R(0), U8(12),
                 B(LdaSmi), I8(-2),
                 B(Star), R(7),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(12), U8(1),
-                B(Star), R(13),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(12), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(6), U8(1),
+                B(Star), R(12),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(6), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
-                B(Ldar), R(13),
+                B(Ldar), R(12),
   /*   11 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(15),
-                B(Mov), R(13), R(14),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(14), U8(2),
+                B(Star), R(14),
+                B(Mov), R(12), R(13),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(13), U8(2),
                 B(Star), R(10),
                 B(LdaZero),
                 B(Star), R(9),
-                B(Jump), U8(217),
+                B(Jump), U8(214),
   /*   31 S> */ B(LdaZero),
                 B(Star), R(1),
                 B(Star), R(3),
@@ -482,7 +480,7 @@ bytecodes: [
   /*   36 E> */ B(TestLessThan), R(0), U8(5),
                 B(JumpIfFalse), U8(4),
                 B(Jump), U8(4),
-                B(Jump), U8(121),
+                B(Jump), U8(118),
                 B(Ldar), R(7),
                 B(SwitchOnSmiNoFeedback), U8(5), U8(1), I8(1),
                 B(LdaSmi), I8(-2),
@@ -493,31 +491,30 @@ bytecodes: [
                 B(CallRuntime), U16(Runtime::kAbort), R(12), U8(1),
                 B(LdaSmi), I8(1),
                 B(TestEqual), R(5), U8(6),
-                B(JumpIfFalse), U8(81),
+                B(JumpIfFalse), U8(78),
   /*   18 E> */ B(StackCheck),
   /*   47 S> */ B(LdaFalse),
-                B(Star), R(14),
-                B(Mov), R(0), R(13),
-  /*   53 E> */ B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(13), U8(2),
                 B(Star), R(13),
+                B(Mov), R(0), R(12),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(12), U8(2),
+                B(Star), R(12),
                 B(LdaSmi), I8(1),
-                B(Mov), R(2), R(12),
-                B(SuspendGenerator), R(12), R(0), U8(13), U8(0),
-                B(Ldar), R(13),
+                B(SuspendGenerator), R(6), R(0), U8(12), U8(0),
+                B(Ldar), R(12),
   /*   56 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(6), R(0), U8(13),
+                B(RestoreGeneratorRegisters), R(6), R(0), U8(12),
                 B(LdaSmi), I8(-2),
                 B(Star), R(7),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(12), U8(1),
-                B(Star), R(13),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(12), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(6), U8(1),
+                B(Star), R(12),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(6), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(6), U8(2), I8(0),
-                B(Ldar), R(13),
+                B(Ldar), R(12),
   /*   47 E> */ B(Throw),
                 B(LdaTrue),
-                B(Star), R(15),
-                B(Mov), R(13), R(14),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(14), U8(2),
+                B(Star), R(14),
+                B(Mov), R(12), R(13),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(13), U8(2),
                 B(Star), R(10),
                 B(LdaZero),
                 B(Star), R(9),
@@ -526,12 +523,12 @@ bytecodes: [
                 B(Star), R(5),
                 B(Mov), R(0), R(3),
                 B(Ldar), R(0),
-                B(JumpLoop), U8(104), I8(1),
+                B(JumpLoop), U8(101), I8(1),
                 B(LdaSmi), I8(1),
   /*   54 E> */ B(TestEqual), R(5), U8(7),
                 B(JumpIfFalse), U8(4),
                 B(Jump), U8(5),
-                B(JumpLoop), U8(174), I8(0),
+                B(JumpLoop), U8(171), I8(0),
                 B(LdaUndefined),
                 B(Star), R(12),
                 B(LdaTrue),
@@ -564,19 +561,19 @@ bytecodes: [
   /*   56 S> */ B(Return),
 ]
 constant pool: [
-  Smi [50],
-  Smi [101],
+  Smi [47],
+  Smi [98],
   Smi [24],
   Smi [7],
   Smi [56],
-  Smi [52],
+  Smi [49],
   Smi [24],
   Smi [7],
   Smi [6],
   Smi [9],
 ]
 handlers: [
-  [52, 312, 318],
+  [52, 306, 312],
 ]
 
 ---
@@ -712,7 +709,7 @@ snippet: "
 "
 frame size: 19
 parameter count: 1
-bytecode array length: 368
+bytecode array length: 365
 bytecodes: [
                 B(Mov), R(new_target), R(7),
                 B(Ldar), R(new_target),
@@ -769,7 +766,7 @@ bytecodes: [
   /*   41 E> */ B(TestLessThan), R(0), U8(5),
                 B(JumpIfFalse), U8(4),
                 B(Jump), U8(4),
-                B(Jump), U8(127),
+                B(Jump), U8(124),
                 B(Ldar), R(8),
                 B(SwitchOnSmiNoFeedback), U8(2), U8(1), I8(0),
                 B(LdaSmi), I8(-2),
@@ -780,33 +777,32 @@ bytecodes: [
                 B(CallRuntime), U16(Runtime::kAbort), R(14), U8(1),
                 B(LdaSmi), I8(1),
                 B(TestEqual), R(6), U8(6),
-                B(JumpIfFalse), U8(87),
+                B(JumpIfFalse), U8(84),
   /*   23 E> */ B(StackCheck),
   /*   52 S> */ B(LdaUndefined),
-                B(Star), R(15),
-                B(Mov), R(2), R(16),
-                B(Mov), R(0), R(17),
-                B(Mov), R(3), R(18),
-  /*   58 E> */ B(CallJSRuntime), U8(%async_function_await_uncaught), R(15), U8(4),
+                B(Star), R(14),
+                B(Mov), R(2), R(15),
+                B(Mov), R(0), R(16),
+                B(Mov), R(3), R(17),
+  /*   58 E> */ B(CallJSRuntime), U8(%async_function_await_uncaught), R(14), U8(4),
                 B(LdaZero),
-                B(Mov), R(2), R(14),
-                B(Mov), R(3), R(15),
-                B(SuspendGenerator), R(14), R(0), U8(15), U8(2),
-                B(Ldar), R(15),
+                B(Mov), R(3), R(14),
+                B(SuspendGenerator), R(7), R(0), U8(14), U8(2),
+                B(Ldar), R(14),
   /*   61 S> */ B(Return),
-                B(RestoreGeneratorRegisters), R(7), R(0), U8(15),
+                B(RestoreGeneratorRegisters), R(7), R(0), U8(14),
                 B(LdaSmi), I8(-2),
                 B(Star), R(8),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(14), U8(1),
-                B(Star), R(15),
-                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(14), U8(1),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(7), U8(1),
+                B(Star), R(14),
+                B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(7), U8(1),
                 B(SwitchOnSmiNoFeedback), U8(3), U8(2), I8(0),
-                B(Ldar), R(15),
+                B(Ldar), R(14),
   /*   52 E> */ B(ReThrow),
                 B(LdaTrue),
-                B(Star), R(17),
-                B(Mov), R(15), R(16),
-                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(16), U8(2),
+                B(Star), R(16),
+                B(Mov), R(14), R(15),
+                B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(15), U8(2),
                 B(Star), R(11),
                 B(LdaZero),
                 B(Star), R(10),
@@ -815,12 +811,12 @@ bytecodes: [
                 B(Star), R(6),
                 B(Mov), R(0), R(4),
                 B(Ldar), R(0),
-                B(JumpLoop), U8(110), I8(1),
+                B(JumpLoop), U8(107), I8(1),
                 B(LdaSmi), I8(1),
   /*   59 E> */ B(TestEqual), R(6), U8(7),
                 B(JumpIfFalse), U8(4),
                 B(Jump), U8(5),
-                B(JumpLoop), U8(180), I8(0),
+                B(JumpLoop), U8(177), I8(0),
                 B(LdaUndefined),
                 B(Star), R(14),
                 B(LdaUndefined),
@@ -881,7 +877,7 @@ bytecodes: [
 constant pool: [
   Smi [57],
   Smi [56],
-  Smi [58],
+  Smi [55],
   Smi [24],
   Smi [7],
   ONE_BYTE_INTERNALIZED_STRING_TYPE [".catch"],
@@ -890,7 +886,7 @@ constant pool: [
   Smi [9],
 ]
 handlers: [
-  [62, 323, 329],
-  [65, 278, 280],
+  [62, 320, 326],
+  [65, 275, 277],
 ]