Inline ordered relative compares of mixed double/undefined values.

test/mjsunit/comparison-ops-and-undefined.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
+
+function test_helper_for_ics(func, b1, b2, b3, b4) {
+  assertEquals(b1, func(.5, .5));
+  assertEquals(b2, func(.5, undefined));
+  assertEquals(b3, func(undefined, .5));
+  assertEquals(b4, func(undefined, undefined));
+}
+
+function test_helper_for_crankshaft(func, b1, b2, b3, b4) {
+  assertEquals(b1, func(.5, .5));
+  %OptimizeFunctionOnNextCall(func);
+  assertEquals(b1, func(.5, .5));
+  assertEquals(b2, func(.5, undefined));
+  assertEquals(b3, func(undefined, .5));
+  assertEquals(b4, func(undefined, undefined));
+}
+
+function less_1(a, b) {
+  return a < b;
+}
+
+test_helper_for_ics(less_1, false, false, false, false);
+
+function less_2(a, b) {
+  return a < b;
+}
+
+test_helper_for_crankshaft(less_1, false, false, false, false);
+
+function greater_1(a, b) {
+  return a > b;
+}
+
+test_helper_for_ics(greater_1, false, false, false, false);
+
+function greater_2(a, b) {
+  return a > b;
+}
+
+test_helper_for_crankshaft(greater_1, false, false, false, false);
+
+function less_equal_1(a, b) {
+  return a <= b;
+}
+
+test_helper_for_ics(less_equal_1, true, false, false, false);
+
+function less_equal_2(a, b) {
+  return a <= b;
+}
+
+test_helper_for_crankshaft(less_equal_1, true, false, false, false);
+
+function greater_equal_1(a, b) {
+  return a >= b;
+}
+
+test_helper_for_ics(greater_equal_1, true, false, false, false);
+
+function greater_equal_2(a, b) {
+  return a >= b;
+}
+
+test_helper_for_crankshaft(greater_equal_1, true, false, false, false);
+
+function equal_1(a, b) {
+  return a == b;
+}
+
+test_helper_for_ics(equal_1, true, false, false, true);
+
+function equal_2(a, b) {
+  return a == b;
+}
+
+test_helper_for_crankshaft(equal_2, true, false, false, true);
+
+function strict_equal_1(a, b) {
+  return a === b;
+}
+
+test_helper_for_ics(strict_equal_1, true, false, false, true);
+
+function strict_equal_2(a, b) {
+  return a === b;
+}
+
+test_helper_for_crankshaft(strict_equal_2, true, false, false, true);
+
+function not_equal_1(a, b) {
+  return a != b;
+}
+
+test_helper_for_ics(not_equal_1, false, true, true, false);
+
+function not_equal_2(a, b) {
+  return a != b;
+}
+
+test_helper_for_crankshaft(not_equal_2, false, true, true, false);