[deoptimizer] Do not modify stack_fp which is used as a key for lookup of previously materialized o…

test/mjsunit/regress/regress-crbug-604680.js

Index: test/mjsunit/regress/regress-crbug-604680.js
diff --git a/test/mjsunit/regress/regress-crbug-601617.js b/test/mjsunit/regress/regress-crbug-604680.js
similarity index 63%
copy from test/mjsunit/regress/regress-crbug-601617.js
copy to test/mjsunit/regress/regress-crbug-604680.js
index 7d03fef838ea0288c4c9824aed2db2d799f1328f..3df2f2047a44653c587a1ee60b3f705ae81779fe 100644
--- a/test/mjsunit/regress/regress-crbug-601617.js
+++ b/test/mjsunit/regress/regress-crbug-604680.js
@@ -5,7 +5,7 @@
 // Flags: --allow-natives-syntax --harmony-tailcalls
 
 function h() {
-  var res = g.arguments[0].x;
+  var res = g.arguments;
   return res;
 }
 
@@ -15,18 +15,31 @@ function g(o) {
 }
 
 function f1() {
-  var o = { x : 1 };
+  var o = { x : 42 };
   var res = g(o);
-  return res;
+  return 1;
 }
 
-function f0() {
+function f0(a, b)  {
   "use strict";
   return f1(5);
 }
 
+function boom(b) {
+  if (b) throw new Error("boom!");
+}
+
 %NeverOptimizeFunction(h);
 f0();
 f0();
 %OptimizeFunctionOnNextCall(f0);
-assertEquals(1, f0());
+
+boom(false);
+boom(false);
+%OptimizeFunctionOnNextCall(boom);
+
+try {
+  f0(1, 2, 3);
+  boom(true, 1, 2, 3);
+} catch (e) {
+}