Check that constant is an integer before getting its value in HGraphBuilder::MatchRotateRight.

test/mjsunit/regress/regress-351263.js

Index: test/mjsunit/regress/regress-351263.js
diff --git a/test/mjsunit/recursive-store-opt.js b/test/mjsunit/regress/regress-351263.js
similarity index 90%
copy from test/mjsunit/recursive-store-opt.js
copy to test/mjsunit/regress/regress-351263.js
index fb2649248dbabc642f864f671d0ce2273ad44bd7..28edbcdb624b2af5c3d0f3241c57e96ecdb06c29 100644
--- a/test/mjsunit/recursive-store-opt.js
+++ b/test/mjsunit/regress/regress-351263.js
@@ -27,15 +27,11 @@
 
 // Flags: --allow-natives-syntax
 
-function g() {
-  this.x = this;
+var __v_12 = {};
+function __f_30(x, sa) {
+  return (x >>> sa) | (x << (__v_12 - sa));
 }
-
-function f() {
-  return new g();
-}
-
-f();
-f();
-%OptimizeFunctionOnNextCall(f);
-f();
+__f_30(1.4, 1);
+__f_30(1.4, 1);
+%OptimizeFunctionOnNextCall(__f_30);
+__f_30(1.4, 1);