Strict mode poision pills.

src/arm/codegen-arm.cc

Index: src/arm/codegen-arm.cc
diff --git a/src/arm/codegen-arm.cc b/src/arm/codegen-arm.cc
index e30de0d51fa0b37255ae0ac947aa55488cc94ffa..e7cd04d0615da4b9ee2c78cb0057b77889f9bba4 100644
--- a/src/arm/codegen-arm.cc
+++ b/src/arm/codegen-arm.cc
@@ -3112,9 +3112,10 @@ void CodeGenerator::InstantiateFunction(
     bool pretenure) {
   // Use the fast case closure allocation code that allocates in new
   // space for nested functions that don't need literals cloning.
-  if (scope()->is_function_scope() &&
+  if (!pretenure &&
+      scope()->is_function_scope() &&
       function_info->num_literals() == 0 &&
-      !pretenure) {
+      !function_info->strict_mode()) {  // Strict mode functions use slow path.
     FastNewClosureStub stub;
     frame_->EmitPush(Operand(function_info));
     frame_->SpillAll();