Strict mode poision pills.

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
diff --git a/src/ia32/codegen-ia32.cc b/src/ia32/codegen-ia32.cc
index f1d4cac19178272dac1b5760f6b1a8cc20d66ace..03ca2750bd6b2090a59fac467bc217782a2f97b4 100644
--- a/src/ia32/codegen-ia32.cc
+++ b/src/ia32/codegen-ia32.cc
@@ -4916,9 +4916,10 @@ Result CodeGenerator::InstantiateFunction(
 
   // 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(Immediate(function_info));
     return frame()->CallStub(&stub, 1);