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

test/mjsunit/math-floor-negative.js

Index: test/mjsunit/math-floor-negative.js
diff --git a/test/mjsunit/regress/regress-2110.js b/test/mjsunit/math-floor-negative.js
similarity index 70%
copy from test/mjsunit/regress/regress-2110.js
copy to test/mjsunit/math-floor-negative.js
index d7f78d26a7b4d16c4217d2b0ac136e52e4542eb1..4cabff577eafc1f7eb435f0e4b5ae3db27d1e0ae 100644
--- a/test/mjsunit/regress/regress-2110.js
+++ b/test/mjsunit/math-floor-negative.js
@@ -25,29 +25,35 @@
 // (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());