diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index f672d4908e..d474260b01 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1077,6 +1077,8 @@ LInstruction* LChunkBuilder::DoTest(HTest* instr) {
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);
       return new LTypeofIsAndBranch(UseTempRegister(typeof_is->value()));
+    } else if (v->IsIsConstructCall()) {
+      return new LIsConstructCallAndBranch(TempRegister());
     } else {
       if (v->IsConstant()) {
         if (HConstant::cast(v)->handle()->IsTrue()) {
@@ -1890,6 +1892,12 @@ LInstruction* LChunkBuilder::DoTypeofIs(HTypeofIs* instr) {
   return DefineSameAsFirst(new LTypeofIs(UseRegister(instr->value())));
 }
 
+
+LInstruction* LChunkBuilder::DoIsConstructCall(HIsConstructCall* instr) {
+  return DefineAsRegister(new LIsConstructCall());
+}
+
+
 LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
   HEnvironment* env = current_block_->last_environment();
   ASSERT(env != NULL);
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index a076c80c75..5194026914 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -153,6 +153,8 @@ class LCodeGen;
   V(Typeof)                                     \
   V(TypeofIs)                                   \
   V(TypeofIsAndBranch)                          \
+  V(IsConstructCall)                            \
+  V(IsConstructCallAndBranch)                   \
   V(UnaryMathOperation)                         \
   V(UnknownOSRValue)                            \
   V(ValueOf)
@@ -1716,6 +1718,24 @@ class LTypeofIsAndBranch: public LControlInstruction<1, 0> {
 };
 
 
+class LIsConstructCall: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCall, "is-construct-call")
+  DECLARE_HYDROGEN_ACCESSOR(IsConstructCall)
+};
+
+
+class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
+ public:
+  explicit LIsConstructCallAndBranch(LOperand* temp) {
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
+                               "is-construct-call-and-branch")
+};
+
+
 class LDeleteProperty: public LTemplateInstruction<1, 2, 0> {
  public:
   LDeleteProperty(LOperand* obj, LOperand* key) {
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 855ed461b5..7617b4bbb9 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -3778,6 +3778,55 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
 }
 
 
+void LCodeGen::DoIsConstructCall(LIsConstructCall* instr) {
+  Register result = ToRegister(instr->result());
+  Label true_label;
+  Label false_label;
+  Label done;
+
+  EmitIsConstructCall(result, scratch0());
+  __ b(eq, &true_label);
+
+  __ LoadRoot(result, Heap::kFalseValueRootIndex);
+  __ b(&done);
+
+
+  __ bind(&true_label);
+  __ LoadRoot(result, Heap::kTrueValueRootIndex);
+
+  __ bind(&done);
+}
+
+
+void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) {
+  Register temp1 = ToRegister(instr->TempAt(0));
+  int true_block = chunk_->LookupDestination(instr->true_block_id());
+  int false_block = chunk_->LookupDestination(instr->false_block_id());
+
+  EmitIsConstructCall(temp1, scratch0());
+  EmitBranch(true_block, false_block, eq);
+}
+
+
+void LCodeGen::EmitIsConstructCall(Register temp1, Register temp2) {
+  ASSERT(!temp1.is(temp2));
+  // Get the frame pointer for the calling frame.
+  __ ldr(temp1, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
+
+  // Skip the arguments adaptor frame if it exists.
+  Label check_frame_marker;
+  __ ldr(temp2, MemOperand(temp1, StandardFrameConstants::kContextOffset));
+  __ cmp(temp2, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
+  __ b(ne, &check_frame_marker);
+  __ ldr(temp1, MemOperand(temp1, StandardFrameConstants::kCallerFPOffset));
+
+  // Check the marker in the calling frame.
+  __ bind(&check_frame_marker);
+  __ ldr(temp1, MemOperand(temp1, StandardFrameConstants::kMarkerOffset));
+  __ cmp(temp1, Operand(Smi::FromInt(StackFrame::CONSTRUCT)));
+}
+
+
 void LCodeGen::DoLazyBailout(LLazyBailout* instr) {
   // No code for lazy bailout instruction. Used to capture environment after a
   // call for populating the safepoint data with deoptimization data.
diff --git a/src/arm/lithium-codegen-arm.h b/src/arm/lithium-codegen-arm.h
index 3f7fe4519b..7bc6689f76 100644
--- a/src/arm/lithium-codegen-arm.h
+++ b/src/arm/lithium-codegen-arm.h
@@ -264,6 +264,10 @@ class LCodeGen BASE_EMBEDDED {
                          Label* is_not_object,
                          Label* is_object);
 
+  // Emits optimized code for %_IsConstructCall().
+  // Caller should branch on equal condition.
+  void EmitIsConstructCall(Register temp1, Register temp2);
+
   LChunk* const chunk_;
   MacroAssembler* const masm_;
   CompilationInfo* const info_;
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index f1093a004c..10e1c975ca 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -113,6 +113,7 @@ class LChunkBuilder;
   V(IsNull)                                    \
   V(IsObject)                                  \
   V(IsSmi)                                     \
+  V(IsConstructCall)                           \
   V(HasInstanceType)                           \
   V(HasCachedArrayIndex)                       \
   V(JSArrayLength)                             \
@@ -2179,6 +2180,22 @@ class HIsSmi: public HUnaryPredicate {
 };
 
 
+class HIsConstructCall: public HInstruction {
+ public:
+  HIsConstructCall() {
+    set_representation(Representation::Tagged());
+    SetFlag(kUseGVN);
+  }
+
+  virtual bool EmitAtUses() const { return uses()->length() <= 1; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCall, "is_construct_call")
+
+ protected:
+  virtual bool DataEquals(HValue* other) const { return true; }
+};
+
+
 class HHasInstanceType: public HUnaryPredicate {
  public:
   HHasInstanceType(HValue* value, InstanceType type)
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 4044f7fff1..dd12831c5f 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -5185,9 +5185,10 @@ void HGraphBuilder::GenerateIsStringWrapperSafeForDefaultValueOf(
 }
 
 
-  // Support for construct call checks.
+// Support for construct call checks.
 void HGraphBuilder::GenerateIsConstructCall(int argument_count, int ast_id) {
-  BAILOUT("inlined runtime function: IsConstructCall");
+  ASSERT(argument_count == 0);
+  ast_context()->ReturnInstruction(new HIsConstructCall, ast_id);
 }
 
 
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 0e959217e0..50ed1048ba 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -3587,6 +3587,53 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
 }
 
 
+void LCodeGen::DoIsConstructCall(LIsConstructCall* instr) {
+  Register result = ToRegister(instr->result());
+  NearLabel true_label;
+  NearLabel false_label;
+  NearLabel done;
+
+  EmitIsConstructCall(result);
+  __ j(equal, &true_label);
+
+  __ mov(result, Factory::false_value());
+  __ jmp(&done);
+
+  __ bind(&true_label);
+  __ mov(result, Factory::true_value());
+
+  __ bind(&done);
+}
+
+
+void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) {
+  Register temp = ToRegister(instr->TempAt(0));
+  int true_block = chunk_->LookupDestination(instr->true_block_id());
+  int false_block = chunk_->LookupDestination(instr->false_block_id());
+
+  EmitIsConstructCall(temp);
+  EmitBranch(true_block, false_block, equal);
+}
+
+
+void LCodeGen::EmitIsConstructCall(Register temp) {
+  // Get the frame pointer for the calling frame.
+  __ mov(temp, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
+
+  // Skip the arguments adaptor frame if it exists.
+  NearLabel check_frame_marker;
+  __ cmp(Operand(temp, StandardFrameConstants::kContextOffset),
+         Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
+  __ j(not_equal, &check_frame_marker);
+  __ mov(temp, Operand(temp, StandardFrameConstants::kCallerFPOffset));
+
+  // Check the marker in the calling frame.
+  __ bind(&check_frame_marker);
+  __ cmp(Operand(temp, StandardFrameConstants::kMarkerOffset),
+         Immediate(Smi::FromInt(StackFrame::CONSTRUCT)));
+}
+
+
 void LCodeGen::DoLazyBailout(LLazyBailout* instr) {
   // No code for lazy bailout instruction. Used to capture environment after a
   // call for populating the safepoint data with deoptimization data.
diff --git a/src/ia32/lithium-codegen-ia32.h b/src/ia32/lithium-codegen-ia32.h
index f0379c02e3..3782208336 100644
--- a/src/ia32/lithium-codegen-ia32.h
+++ b/src/ia32/lithium-codegen-ia32.h
@@ -229,6 +229,11 @@ class LCodeGen BASE_EMBEDDED {
                          Label* is_not_object,
                          Label* is_object);
 
+  // Emits optimized code for %_IsConstructCall().
+  // Caller should branch on equal condition.
+  void EmitIsConstructCall(Register temp);
+
+
   LChunk* const chunk_;
   MacroAssembler* const masm_;
   CompilationInfo* const info_;
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index b31c4eba18..9ec2faf972 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1098,6 +1098,8 @@ LInstruction* LChunkBuilder::DoTest(HTest* instr) {
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);
       return new LTypeofIsAndBranch(UseTempRegister(typeof_is->value()));
+    } else if (v->IsIsConstructCall()) {
+      return new LIsConstructCallAndBranch(TempRegister());
     } else {
       if (v->IsConstant()) {
         if (HConstant::cast(v)->handle()->IsTrue()) {
@@ -1925,6 +1927,12 @@ LInstruction* LChunkBuilder::DoTypeofIs(HTypeofIs* instr) {
   return DefineSameAsFirst(new LTypeofIs(UseRegister(instr->value())));
 }
 
+
+LInstruction* LChunkBuilder::DoIsConstructCall(HIsConstructCall* instr) {
+  return DefineAsRegister(new LIsConstructCall);
+}
+
+
 LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
   HEnvironment* env = current_block_->last_environment();
   ASSERT(env != NULL);
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index f643dac9f6..e471274095 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -112,6 +112,8 @@ class LCodeGen;
   V(IsObjectAndBranch)                          \
   V(IsSmi)                                      \
   V(IsSmiAndBranch)                             \
+  V(IsConstructCall)                            \
+  V(IsConstructCallAndBranch)                   \
   V(JSArrayLength)                              \
   V(Label)                                      \
   V(LazyBailout)                                \
@@ -755,6 +757,24 @@ class LHasCachedArrayIndexAndBranch: public LControlInstruction<1, 0> {
 };
 
 
+class LIsConstructCall: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCall, "is-construct-call")
+  DECLARE_HYDROGEN_ACCESSOR(IsConstructCall)
+};
+
+
+class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
+ public:
+  explicit LIsConstructCallAndBranch(LOperand* temp) {
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
+                               "is-construct-call-and-branch")
+};
+
+
 class LClassOfTest: public LTemplateInstruction<1, 1, 1> {
  public:
   LClassOfTest(LOperand* value, LOperand* temp) {
diff --git a/src/runtime.cc b/src/runtime.cc
index 4994378cd3..3e38d388d8 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -6681,28 +6681,50 @@ static MaybeObject* Runtime_NewClosure(Arguments args) {
   return *result;
 }
 
+
 static MaybeObject* Runtime_NewObjectFromBound(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 2);
+  // First argument is a function to use as a constructor.
   CONVERT_ARG_CHECKED(JSFunction, function, 0);
-  CONVERT_ARG_CHECKED(JSArray, params, 1);
 
-  RUNTIME_ASSERT(params->HasFastElements());
-  FixedArray* fixed = FixedArray::cast(params->elements());
+  // Second argument is either null or an array of bound arguments.
+  FixedArray* bound_args = NULL;
+  int bound_argc = 0;
+  if (!args[1]->IsNull()) {
+    CONVERT_ARG_CHECKED(JSArray, params, 1);
+    RUNTIME_ASSERT(params->HasFastElements());
+    bound_args = FixedArray::cast(params->elements());
+    bound_argc = Smi::cast(params->length())->value();
+  }
 
-  int fixed_length = Smi::cast(params->length())->value();
-  SmartPointer<Object**> param_data(NewArray<Object**>(fixed_length));
-  for (int i = 0; i < fixed_length; i++) {
-    Handle<Object> val = Handle<Object>(fixed->get(i));
+  // Find frame containing arguments passed to the caller.
+  JavaScriptFrameIterator it;
+  JavaScriptFrame* frame = it.frame();
+  ASSERT(!frame->is_optimized());
+  it.AdvanceToArgumentsFrame();
+  frame = it.frame();
+  int argc = frame->GetProvidedParametersCount();
+
+  // Prepend bound arguments to caller's arguments.
+  int total_argc = bound_argc + argc;
+  SmartPointer<Object**> param_data(NewArray<Object**>(total_argc));
+  for (int i = 0; i < bound_argc; i++) {
+    Handle<Object> val = Handle<Object>(bound_args->get(i));
     param_data[i] = val.location();
   }
+  for (int i = 0; i < argc; i++) {
+    Handle<Object> val = Handle<Object>(frame->GetParameter(i));
+    param_data[bound_argc + i] = val.location();
+  }
 
   bool exception = false;
-  Handle<Object> result = Execution::New(
-      function, fixed_length, *param_data, &exception);
+  Handle<Object> result =
+      Execution::New(function, total_argc, *param_data, &exception);
   if (exception) {
       return Failure::Exception();
   }
+
   ASSERT(!result.is_null());
   return *result;
 }
diff --git a/src/v8natives.js b/src/v8natives.js
index b0fb5bf171..83b00b0f13 100644
--- a/src/v8natives.js
+++ b/src/v8natives.js
@@ -1153,33 +1153,49 @@ function FunctionBind(this_arg) { // Length is 1.
   }
   // this_arg is not an argument that should be bound.
   var argc_bound = (%_ArgumentsLength() || 1) - 1;
-  if (argc_bound > 0) {
+  var fn = this;
+  if (argc_bound == 0) {
+    var result = function() {
+      if (%_IsConstructCall()) {
+        // %NewObjectFromBound implicitly uses arguments passed to this
+        // function. We do not pass the arguments object explicitly to avoid
+        // materializing it and guarantee that this function will be optimized.
+        return %NewObjectFromBound(fn, null);
+      }
+
+      return fn.apply(this_arg, arguments);
+    };
+  } else {
     var bound_args = new $Array(argc_bound);
     for(var i = 0; i < argc_bound; i++) {
       bound_args[i] = %_Arguments(i+1);
     }
+
+    var result = function() {
+      // If this is a construct call we use a special runtime method
+      // to generate the actual object using the bound function.
+      if (%_IsConstructCall()) {
+        // %NewObjectFromBound implicitly uses arguments passed to this
+        // function. We do not pass the arguments object explicitly to avoid
+        // materializing it and guarantee that this function will be optimized.
+        return %NewObjectFromBound(fn, bound_args);
+      }
+
+      // Combine the args we got from the bind call with the args
+      // given as argument to the invocation.
+      var argc = %_ArgumentsLength();
+      var args = new $Array(argc + argc_bound);
+      // Add bound arguments.
+      for (var i = 0; i < argc_bound; i++) {
+        args[i] = bound_args[i];
+      }
+      // Add arguments from call.
+      for (var i = 0; i < argc; i++) {
+        args[argc_bound + i] = %_Arguments(i);
+      }
+      return fn.apply(this_arg, args);
+    };
   }
-  var fn = this;
-  var result = function() {
-    // Combine the args we got from the bind call with the args
-    // given as argument to the invocation.
-    var argc = %_ArgumentsLength();
-    var args = new $Array(argc + argc_bound);
-    // Add bound arguments.
-    for (var i = 0; i < argc_bound; i++) {
-      args[i] = bound_args[i];
-    }
-    // Add arguments from call.
-    for (var i = 0; i < argc; i++) {
-      args[argc_bound + i] = %_Arguments(i);
-    }
-    // If this is a construct call we use a special runtime method
-    // to generate the actual object using the bound function.
-    if (%_IsConstructCall()) {
-      return %NewObjectFromBound(fn, args);
-    }
-    return fn.apply(this_arg, args);
-  };
 
   // We already have caller and arguments properties on functions,
   // which are non-configurable. It therefore makes no sence to
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 69b5441ec0..31b812cc8a 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2284,6 +2284,54 @@ void LCodeGen::DoTypeofIs(LTypeofIs* instr) {
 }
 
 
+void LCodeGen::DoIsConstructCall(LIsConstructCall* instr) {
+  Register result = ToRegister(instr->result());
+  NearLabel true_label;
+  NearLabel false_label;
+  NearLabel done;
+
+  EmitIsConstructCall(result);
+  __ j(equal, &true_label);
+
+  __ LoadRoot(result, Heap::kFalseValueRootIndex);
+  __ jmp(&done);
+
+  __ bind(&true_label);
+  __ LoadRoot(result, Heap::kTrueValueRootIndex);
+
+
+  __ bind(&done);
+}
+
+
+void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) {
+  Register temp = ToRegister(instr->TempAt(0));
+  int true_block = chunk_->LookupDestination(instr->true_block_id());
+  int false_block = chunk_->LookupDestination(instr->false_block_id());
+
+  EmitIsConstructCall(temp);
+  EmitBranch(true_block, false_block, equal);
+}
+
+
+void LCodeGen::EmitIsConstructCall(Register temp) {
+  // Get the frame pointer for the calling frame.
+  __ movq(temp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
+
+  // Skip the arguments adaptor frame if it exists.
+  NearLabel check_frame_marker;
+  __ SmiCompare(Operand(temp, StandardFrameConstants::kContextOffset),
+                Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
+  __ j(not_equal, &check_frame_marker);
+  __ movq(temp, Operand(rax, StandardFrameConstants::kCallerFPOffset));
+
+  // Check the marker in the calling frame.
+  __ bind(&check_frame_marker);
+  __ SmiCompare(Operand(temp, StandardFrameConstants::kMarkerOffset),
+                Smi::FromInt(StackFrame::CONSTRUCT));
+}
+
+
 void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) {
   Register input = ToRegister(instr->InputAt(0));
   int true_block = chunk_->LookupDestination(instr->true_block_id());
diff --git a/src/x64/lithium-codegen-x64.h b/src/x64/lithium-codegen-x64.h
index cbcc5c8b0c..6f8f06e345 100644
--- a/src/x64/lithium-codegen-x64.h
+++ b/src/x64/lithium-codegen-x64.h
@@ -221,6 +221,10 @@ class LCodeGen BASE_EMBEDDED {
                          Label* is_not_object,
                          Label* is_object);
 
+  // Emits optimized code for %_IsConstructCall().
+  // Caller should branch on equal condition.
+  void EmitIsConstructCall(Register temp);
+
   LChunk* const chunk_;
   MacroAssembler* const masm_;
   CompilationInfo* const info_;
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index 64c2ba63e1..b6e0a44cf6 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -1082,6 +1082,8 @@ LInstruction* LChunkBuilder::DoTest(HTest* instr) {
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);
       return new LTypeofIsAndBranch(UseTempRegister(typeof_is->value()));
+    } else if (v->IsIsConstructCall()) {
+      return new LIsConstructCallAndBranch(TempRegister());
     } else {
       if (v->IsConstant()) {
         if (HConstant::cast(v)->handle()->IsTrue()) {
@@ -1775,6 +1777,12 @@ LInstruction* LChunkBuilder::DoTypeofIs(HTypeofIs* instr) {
   return NULL;
 }
 
+
+LInstruction* LChunkBuilder::DoIsConstructCall(HIsConstructCall* instr) {
+  return DefineAsRegister(new LIsConstructCall);
+}
+
+
 LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
   HEnvironment* env = current_block_->last_environment();
   ASSERT(env != NULL);
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index 64d141e335..72027b2727 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -259,6 +259,8 @@ class LCodeGen;
   V(Typeof)                                     \
   V(TypeofIs)                                   \
   V(TypeofIsAndBranch)                          \
+  V(IsConstructCall)                            \
+  V(IsConstructCallAndBranch)                   \
   V(UnaryMathOperation)                         \
   V(UnknownOSRValue)                            \
   V(ValueOf)
@@ -1763,6 +1765,24 @@ class LTypeofIsAndBranch: public LControlInstruction<1, 0> {
 };
 
 
+class LIsConstructCall: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCall, "is-construct-call")
+  DECLARE_HYDROGEN_ACCESSOR(IsConstructCall)
+};
+
+
+class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
+ public:
+  explicit LIsConstructCallAndBranch(LOperand* temp) {
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
+                               "is-construct-call-and-branch")
+};
+
+
 class LDeleteProperty: public LTemplateInstruction<1, 2, 0> {
  public:
   LDeleteProperty(LOperand* obj, LOperand* key) {