Implement inlining of constructor calls.

test/mjsunit/regress/regress-1229.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 108 matching lines @@
 invoke(g1, [3, 2]);
 invoke(g2, [3, 2, 4]);
 invoke(g3, [4, 3, 2]);
 invoke(h1, [6, 4]);
 invoke(h2, [6, 4, 8]);
 invoke(h3, [8, 6, 4]);
 
 // Check that %_IsConstructCall returns correct value when inlined
 var NON_CONSTRUCT_MARKER = {};
 var CONSTRUCT_MARKER = {};
-function baz(x) {
+function baz1(x) {
   return (!%_IsConstructCall()) ? NON_CONSTRUCT_MARKER : CONSTRUCT_MARKER;
 }
 
-function bar(x, y, z) {
-  var non_construct = baz(0); /* baz should be inlined */
-  assertEquals(non_construct, NON_CONSTRUCT_MARKER);
-  var non_construct = baz(); /* baz should be inlined */
-  assertEquals(non_construct, NON_CONSTRUCT_MARKER);
-  var non_construct = baz(0, 0); /* baz should be inlined */
-  assertEquals(non_construct, NON_CONSTRUCT_MARKER);
-  var construct = new baz(0);
-  assertEquals(construct, CONSTRUCT_MARKER);
+function bar1(x, y, z) {
+  var non_construct = baz1(0); /* baz should be inlined */
+  assertSame(non_construct, NON_CONSTRUCT_MARKER);
+  var non_construct = baz1(); /* baz should be inlined */
+  assertSame(non_construct, NON_CONSTRUCT_MARKER);
+  var non_construct = baz1(0, 0); /* baz should be inlined */
+  assertSame(non_construct, NON_CONSTRUCT_MARKER);
+  var construct = new baz1(0);
+  assertSame(construct, CONSTRUCT_MARKER);
+  var construct = new baz1(0, 0);
+  assertSame(construct, CONSTRUCT_MARKER);
 }
 
-invoke(bar, [1, 2, 3]);
+function baz2(x) {
+  return (!%IsConstructCall()) ? NON_CONSTRUCT_MARKER : CONSTRUCT_MARKER;
+}
+
+function bar2(x, y, z) {
+  var non_construct = baz2(0); /* baz should be inlined */
+  assertSame(non_construct, NON_CONSTRUCT_MARKER);
+  var non_construct = baz2(); /* baz should be inlined */
+  assertSame(non_construct, NON_CONSTRUCT_MARKER);
+  var non_construct = baz2(0, 0); /* baz should be inlined */
+  assertSame(non_construct, NON_CONSTRUCT_MARKER);
+  var construct = new baz2(0);
+  assertSame(construct, CONSTRUCT_MARKER);
+  var construct = new baz2(0, 0);
+  assertSame(construct, CONSTRUCT_MARKER);
+}
+
+invoke(bar1, [1, 2, 3]);
+invoke(bar2, [1, 2, 3]);