Update V8 to r5091 as required by WebKit r63859.
Change-Id: I8e35d765e6f6c7f89eccff900e1cabe2d5dd6110
diff --git a/test/mjsunit/regress/regress-r4998.js b/test/mjsunit/regress/regress-r4998.js
new file mode 100644
index 0000000..9cf3371
--- /dev/null
+++ b/test/mjsunit/regress/regress-r4998.js
@@ -0,0 +1,94 @@
+// Copyright 2010 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
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Test for a broken fast-smi-loop that does not save the incremented value
+// of the loop index. If this test fails, it loops forever, and times out.
+
+// Flags: --nofull-compiler
+
+// Calling foo() spills the virtual frame.
+function foo() {
+ return;
+}
+
+function bar() {
+ var x1 = 3;
+ var x2 = 3;
+ var x3 = 3;
+ var x4 = 3;
+ var x5 = 3;
+ var x6 = 3;
+ var x7 = 3;
+ var x8 = 3;
+ var x9 = 3;
+ var x10 = 3;
+ var x11 = 3;
+ var x12 = 3;
+ var x13 = 3;
+
+ foo();
+
+ x1 = 257;
+ x2 = 258;
+ x3 = 259;
+ x4 = 260;
+ x5 = 261;
+ x6 = 262;
+ x7 = 263;
+ x8 = 264;
+ x9 = 265;
+ x10 = 266;
+ x11 = 267;
+ x12 = 268;
+ x13 = 269;
+
+ // The loop variable x7 is initialized to 3,
+ // and then MakeMergeable is called on the virtual frame.
+ // MakeMergeable has forced the loop variable x7 to be spilled,
+ // so it is marked as synced
+ // The back edge then merges its virtual frame, which incorrectly
+ // claims that x7 is synced, and does not save the modified
+ // value.
+ for (x7 = 3; x7 < 10; ++x7) {
+ foo();
+ }
+}
+
+bar();
+
+function aliasing() {
+ var x = 3;
+ var j;
+ for (j = 7; j < 11; ++j) {
+ x = j;
+ }
+
+ assertEquals(10, x);
+ assertEquals(11, j);
+}
+
+aliasing();