Make the Integer32 type info only cover the signed 32 bit integers....

test/mjsunit/bitops-info.js

+// 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
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+//       with the distribution.
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+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
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+// "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.
+
+function non_int32() {
+  return 2600822924;  // It's not a signed Int32.
+}
+
+function hidden_smi() {
+  return 46512102;  // It's a Smi
+}
+
+function hidden_int32() {
+  return 1600822924;  // It's a signed Int32.
+}
+
+
+function f() {
+  var x = non_int32();  // Not a constant.
+  var y = hidden_smi();  // Not a constant.
+  var z = hidden_int32();
+  assertEquals(46512102 & 2600822924, 46512102 & x, "1");
+  assertEquals(1600822924 & 2600822924, 1600822924 & x, "2");
+  assertEquals(2600822924 & 2600822924, 2600822924 & x, "3");
+  assertEquals(46512102 & 46512102, 46512102 & y, "4");
+  assertEquals(1600822924 & 46512102, 1600822924 & y, "5");
+  assertEquals(2600822924 & 46512102, 2600822924 & y, "6");
+  assertEquals(46512102 & 1600822924, 46512102 & z, "7");
+  assertEquals(1600822924 & 1600822924, 1600822924 & z, "8");
+  assertEquals(2600822924 & 1600822924, 2600822924 & z, "9");
+  assertEquals(46512102 & 2600822924, y & x, "10");
+  assertEquals(1600822924 & 2600822924, z & x, "11");
+
+  assertEquals(46512102 & 2600822924, x & 46512102, "1rev");
+  assertEquals(1600822924 & 2600822924, x & 1600822924, "2rev");
+  assertEquals(2600822924 & 2600822924, x & 2600822924, "3rev");
+  assertEquals(46512102 & 46512102, y & 46512102, "4rev");
+  assertEquals(1600822924 & 46512102, y & 1600822924, "5rev");
+  assertEquals(2600822924 & 46512102, y & 2600822924, "6rev");
+  assertEquals(46512102 & 1600822924, z & 46512102, "7rev");
+  assertEquals(1600822924 & 1600822924, z & 1600822924, "8rev");
+  assertEquals(2600822924 & 1600822924, z & 2600822924, "9rev");
+  assertEquals(46512102 & 2600822924, x & y, "10rev");
+  assertEquals(1600822924 & 2600822924, x & z, "11rev");
+
+  assertEquals(2600822924 & 2600822924, x & x, "xx");
+  assertEquals(y, y & y, "yy");
+  assertEquals(z, z & z, "zz");
+}
+
+
+for (var i = 0; i < 5; i++) {
+  f();
+}