Allow inlining of functions containing RegExp literals.

test/mjsunit/compiler/inline-literals.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 30 matching lines @@
   var expected = { 'a':a, 'x':{ 'b':b, 'c':c, 'y':b + c } };
   var result = o1(a, b, c);
   assertEquals(expected, result, "TestObjectLiteral");
 }
 
 TestObjectLiteral(1, 2, 3);
 TestObjectLiteral(1, 2, 3);
 %OptimizeFunctionOnNextCall(TestObjectLiteral);
 TestObjectLiteral(1, 2, 3);
 TestObjectLiteral('a', 'b', 'c');
+
+function r2(s, x, y) {
+  return s.replace(/a/, x + y);
+}
+
+function r1(s, x, y) {
+  return r2(s, x, y).replace(/b/, y + x);
+}
+
+function TestRegExpLiteral(s, x, y, expected) {
+  var result = r1(s, x, y);
+  assertEquals(expected, result, "TestRegExpLiteral");
+}
+
+TestRegExpLiteral("a-", "reg", "exp", "regexp-");
+TestRegExpLiteral("-b", "reg", "exp", "-expreg");
+%OptimizeFunctionOnNextCall(TestRegExpLiteral);
+TestRegExpLiteral("ab", "reg", "exp", "regexpexpreg");
+TestRegExpLiteral("ab", 12345, 54321, "6666666666");