[turbofan] In effect control linearizer, only delay effect phi update for loops.

test/mjsunit/compiler/regress-628403.js

Index: test/mjsunit/compiler/regress-628403.js
diff --git a/test/mjsunit/compiler/regress-621423.js b/test/mjsunit/compiler/regress-628403.js
similarity index 50%
copy from test/mjsunit/compiler/regress-621423.js
copy to test/mjsunit/compiler/regress-628403.js
index 962176ffbff75281ae55fed8a05fb40158f0d6f1..4096ac32aee4692487618fc53f6b7bcf703a9098 100644
--- a/test/mjsunit/compiler/regress-621423.js
+++ b/test/mjsunit/compiler/regress-628403.js
@@ -4,18 +4,24 @@
 
 // Flags: --allow-natives-syntax
 
-var a = [0, ""];
-a[0] = 0;
+var dothrow = false;
 
-function g(array) {
-  array[1] = undefined;
+function g() {
+  if (dothrow) throw 1;
 }
 
-function f() {
-  g(function() {});
-  g(a);
+function f(a) {
+  try {
+    g();
+  } catch(e) {
+    if (typeof e !== 'number' && e !== 1) throw e;
+    return a[0];
+  }
 }
 
+%NeverOptimizeFunction(g);
 f();
-%OptimizeFunctionOnNextCall(f);
 f();
+%OptimizeFunctionOnNextCall(f);
+dothrow = true;
+assertEquals(42, f([42]));