[turbofan] Escape analysis treats guard nodes as escaping.

test/mjsunit/regress/regress-crbug-602595.js

Index: test/mjsunit/regress/regress-crbug-602595.js
diff --git a/test/mjsunit/compiler/regress-dead-throw-inlining.js b/test/mjsunit/regress/regress-crbug-602595.js
similarity index 54%
copy from test/mjsunit/compiler/regress-dead-throw-inlining.js
copy to test/mjsunit/regress/regress-crbug-602595.js
index 097a20bc41d34760931928c45e4117888295f20a..840a3b73c7f3adbe81d63e9e56c6af258c0bb1aa 100644
--- a/test/mjsunit/compiler/regress-dead-throw-inlining.js
+++ b/test/mjsunit/regress/regress-crbug-602595.js
@@ -2,12 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --experimental-turbo-escape
 
-function g() { if (false) throw 0; }
-function f() { g(); }
+function f(a) { return [a] }
 
-f();
-f();
+assertEquals([23], f(23));
+assertEquals([42], f(42));
 %OptimizeFunctionOnNextCall(f);
-f();
+assertEquals([65], f(65));