When parsing inner functions, try to allocate in a temporary Zone

test/mjsunit/compiler/lazy-iife-no-parens.js

Index: test/mjsunit/compiler/lazy-iife-no-parens.js
diff --git a/test/mjsunit/regress/regress-4255-1.js b/test/mjsunit/compiler/lazy-iife-no-parens.js
similarity index 76%
copy from test/mjsunit/regress/regress-4255-1.js
copy to test/mjsunit/compiler/lazy-iife-no-parens.js
index 78fe860290be517983d226cce8b46dd7cc948d5c..cbad4da4a6454f2cc31fda404dda26c30b5d4a1b 100644
--- a/test/mjsunit/regress/regress-4255-1.js
+++ b/test/mjsunit/compiler/lazy-iife-no-parens.js
@@ -18,9 +18,26 @@
 // comments to trigger lazy compilation comments to trigger lazy compilation
 // comments to trigger lazy compilation comments to trigger lazy compilation
 
-'use strict';
-{
-  let x = function() {};
-  // Trigger OSR.
-  for (var i = 0; i < 1000000; i++);
+// Test that IIFEs are compilable even under lazy conditions where the enclosing
+// parentheses heuristic has not been triggered.
+
+function f() {
+  return function(){ return 0; }();
+}
+
+function g() {
+  function h() {
+    return function(){ return 0; }();
+  }
+  return h();
 }
+
+f();
+
+g();
+
+0, function(){}();
+
+(function(){ 0, function(){}(); })();
+
+0, function(){ (function(){ 0, function(){}(); })(); }();