ARM: Improve integer multiplication.

test/mjsunit/lithium/MulI.js

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-// Flags: --expose-debug-as debug --allow-natives-syntax
+// Flags: --allow-natives-syntax --no-use-osr
 
-Debug = debug.Debug;
-var listened = false;
-
-function listener(event, exec_state, event_data, data) {
-  if (event == Debug.DebugEvent.Exception) {
-    for (var i = 0; i < exec_state.frameCount(); i++) {
-      print(exec_state.frame(i).receiver());
-      print(exec_state.frame(i).func().name());
-    }
-  }
-  listened = true;
+function foo_smi(a, b) {
+  var result = a * b;
+  result += a * 35;
+  result += a * -1;
+  result += a * 1;
+  result += a * 0;
+  return result * a;
 }
 
-Debug.setListener(listener);
-Debug.setBreakOnException();
+function foo_int(a, b) {
+  var result = a * b;
+  result += a * 35;
+  result += a * -1;
+  result += a * 1;
+  result += a * 0;
+  return result * a;
+}
 
-assertThrows(function() { delete null['foo']; });
+foo_smi(10, 5);
+var r1 = foo_smi(10, 5);
+%OptimizeFunctionOnNextCall(foo_smi);
+var r2 = foo_smi(10, 5);
 
-Debug.clearBreakOnException();
-Debug.setListener(null);
+assertEquals(r1, r2);
 
-assertTrue(listened);
+foo_int(10, 21474800);
+var r3 = foo_int(10, 21474800);
+%OptimizeFunctionOnNextCall(foo_int);
+var r4 = foo_int(10, 21474800);
 
+assertEquals(r3, r4);
+
+// Check overflow with -1 constant.
+function foo2(value) {
+  return value * -1;
+}
+
+foo2(-2147483600);
+foo2(-2147483600);
+%OptimizeFunctionOnNextCall(foo2);
+assertEquals(2147483648, foo2(-2147483648));