[turbofan] Reducers should revisit end after merging to it.

test/mjsunit/compiler/regress-dead-throw-inlining.js

Index: test/mjsunit/compiler/regress-dead-throw-inlining.js
diff --git a/test/mjsunit/regress/regress-crbug-577112.js b/test/mjsunit/compiler/regress-dead-throw-inlining.js
similarity index 68%
copy from test/mjsunit/regress/regress-crbug-577112.js
copy to test/mjsunit/compiler/regress-dead-throw-inlining.js
index 504f921a335801a51fd1c0c1a39a8b08e8872722..097a20bc41d34760931928c45e4117888295f20a 100644
--- a/test/mjsunit/regress/regress-crbug-577112.js
+++ b/test/mjsunit/compiler/regress-dead-throw-inlining.js
@@ -4,11 +4,9 @@
 
 // Flags: --allow-natives-syntax
 
-Array.prototype.__proto__ = null;
-var prototype = Array.prototype;
-function f() {
-  prototype.lastIndexOf({});
-}
+function g() { if (false) throw 0; }
+function f() { g(); }
+
 f();
 f();
 %OptimizeFunctionOnNextCall(f);