[turbofan] Introduce integer multiplication with overflow.

test/mjsunit/math-mul.js

Index: test/mjsunit/math-mul.js
diff --git a/test/message/instanceof-nonobject.js b/test/mjsunit/math-mul.js
similarity index 91%
copy from test/message/instanceof-nonobject.js
copy to test/mjsunit/math-mul.js
index ef8e0ae2e4e6ba53a8e0d569e36b39d9aade6dee..0652b48ee9360604d40a30028f2b00edcfd4602c 100644
--- a/test/message/instanceof-nonobject.js
+++ b/test/mjsunit/math-mul.js
@@ -25,6 +25,10 @@
 // (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: --ignition

[Benedikt Meurer, 2016/07/12 04:09:28]

Don't pass Flags: here, Ignition is one of our test variants anyways.

[mvstanton, 2016/07/12 08:52:49]

Done.

 
+function test(x, y) { return x * y; }
 
-1 instanceof 2;
+assertEquals(8, test(2, 4));
+assertEquals(-0, test(-3, 0));
+assertEquals(-0, test(0, -0));