Fix DoDeferredNumberTagU to keep the value in xmm1 instead of xmm0 on x64.

test/mjsunit/compiler/uint32.js

 // Copyright 2012 the V8 project authors. All rights reserved.
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 //
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --expose-gc
 
 // Test uint32 handing in optimized frames.
 
 var K1 = 0x7fffffff;
 var K2 = 0xffffffff;
 
 var uint32_array = new Uint32Array(2);
 uint32_array[0] = K1;
 uint32_array[1] = K2;
 
 function ChangeI2T(arr, i) {
   return uint32_array[i];
 }
 
 assertEquals(K1, ChangeI2T(uint32_array, 0));
 assertEquals(K2, ChangeI2T(uint32_array, 1));
 %OptimizeFunctionOnNextCall(ChangeI2T);
 assertEquals(K1, ChangeI2T(uint32_array, 0));
-assertEquals(K2, ChangeI2T(uint32_array, 1));
+// Loop to force inline allocation failure and a call into runtime.
+for (var i = 0; i < 80000; i++) {
+  assertEquals(K2, ChangeI2T(uint32_array, 1));
+}
 
 function SideEffect() {
   with ({}) { }  // not inlinable
 }
 
 function Deopt(obj, arr, i) {
   var x = arr[i];
   SideEffect();  // x will be used by HSimulate.
   obj.x;
   return x;
@@ skipping 83 matching lines @@
       a = (a >>> 0);
     }
   }
   return a + a;
 }
 
 assertEquals(2, PhiOfPhiUnsafe(1));
 assertEquals(2, PhiOfPhiUnsafe(1));
 %OptimizeFunctionOnNextCall(PhiOfPhiUnsafe);
 assertEquals(2 * K3, PhiOfPhiUnsafe(K3));
+
+var old_array = new Array(1000);
+
+for (var i = 0; i < old_array.length; i++) old_array[i] = null;
+
+// Force promotion.
+gc();
+gc();
+
+function FillOldArrayWithHeapNumbers(N) {
+  for (var i = 0; i < N; i++) {
+    old_array[i] = uint32_array[1];
+  }
+}
+
+FillOldArrayWithHeapNumbers(1);
+FillOldArrayWithHeapNumbers(1);
+%OptimizeFunctionOnNextCall(FillOldArrayWithHeapNumbers);
+FillOldArrayWithHeapNumbers(old_array.length);
+gc();