Port r11517 (not deopt Math.floor on negative input) to x64, sse2.

test/mjsunit/math-floor-negative.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
+// Flags: --noenable_sse4_1 --allow-natives-syntax
 
-var uint8 = new Uint8Array(1);
-
-function test() {
-  uint8[0] = 0x800000aa;
-  assertEquals(0xaa, uint8[0]);
+function test1() {
+  // Trigger overflow when converting/truncating double to integer.
+  // Divide by 10 to avoid overflow when smi-tagging at the end.
+  return Math.floor(-100000000000.5) / 10;
 }
 
-test();
-test();
-test();
-%OptimizeFunctionOnNextCall(test);
-test();
-
-var uint32 = new Uint32Array(1);
-
 function test2() {
-  uint32[0] = 0x80123456789abcde;
-  assertEquals(0x789ac000, uint32[0]);
+  // Trigger no overflow.
+  return Math.floor(-100.2);
 }
 
+function test3() {
+  // Trigger overflow when compensating by subtracting after compare.
+  // Divide by 10 to avoid overflow when smi-tagging at the end.
+  return Math.floor(-2147483648.1) / 10;
+}
+
+test1();
+test1();
+%OptimizeFunctionOnNextCall(test1);
 test2();
 test2();
 %OptimizeFunctionOnNextCall(test2);
-test2();
+test3();
+test3();
+%OptimizeFunctionOnNextCall(test3);
+
+assertEquals(-10000000000.1, test1());
+assertEquals(-101, test2());
+assertEquals(-214748364.9, test3());