Use correct arguments adaptation environment when inlining function containing arguments.

test/mjsunit/compiler/inline-arguments.js

 // Copyright 2011 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 62 matching lines @@
 function F4() {
   F3(true, false);
   return F31(1);
 }
 
 F4(1);
 F4(1);
 F4(1);
 %OptimizeFunctionOnNextCall(F4);
 F4(1);
+
+
+// Test correct adapation of arguments.
+(function () {
+  "use strict";  // Strict mode prevents arguments object from shadowing parameters.

[Michael Starzinger, 2012/03/20 17:48:41]

Line is longer than 80 characters.

+
+  function G2() {
+    assertArrayEquals([1,2], arguments);
+  }
+
+  function G4() {
+    assertArrayEquals([1,2,3,4], arguments);
+  }
+
+  function adapt2to4(a, b, c, d) {
+    G2.apply(this, arguments);
+  }
+
+  function adapt4to2(a, b) {
+    G4.apply(this, arguments);
+  }
+
+  function test_adaptation() {
+    adapt2to4(1, 2);
+    adapt4to2(1, 2, 3, 4);
+  }
+
+  test_adaptation();
+  test_adaptation();
+  %OptimizeFunctionOnNextCall(test_adaptation);
+  test_adaptation();
+})();