Check for NaN in inlined versions of Math.min, Math.max.

test/mjsunit/regress/regress-2056.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
+//       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.
+
+// Flags: --allow-natives-syntax
+
+var cases = [
+    [0.0, 0.0, 0.0, 0,0],
+    [undefined, 0.0, NaN, NaN],
+    [0.0, undefined, NaN, NaN],
+    [NaN, 0.0, NaN, NaN],
+    [0.0, NaN, NaN, NaN],
+    [-NaN, 0.0, NaN, NaN],
+    [0.0, -NaN, NaN, NaN],
+    [Infinity, 0.0, Infinity, 0.0],
+    [0.0, Infinity, Infinity, 0.0],
+    [-Infinity, 0.0, 0.0, -Infinity],
+    [0.0, -Infinity, 0.0, -Infinity]
+];
+
+function do_min(a, b) {
+    return Math.min(a, b);
+}
+
+function do_max(a, b) {
+    return Math.max(a, b);
+}
+
+// Make sure that non-crankshaft results match expectations.
+for (i = 0; i < cases.length; ++i) {
+    var c = cases[i];
+    assertEquals(c[3], do_min(c[0], c[1]));
+    assertEquals(c[2], do_max(c[0], c[1]));
+}
+
+// Make sure that crankshaft results match expectations.
+for (i = 0; i < cases.length; ++i) {
+    var c = cases[i];
+    %OptimizeFunctionOnNextCall(do_min);
+    %OptimizeFunctionOnNextCall(do_max);
+    assertEquals(c[3], do_min(c[0], c[1]));
+    assertEquals(c[2], do_max(c[0], c[1]));
+}