Clear new-space promotion if the type is smi.

R=mvstanton@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15098002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14616 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen-instructions.cc

@@ -1678,6 +1678,7 @@ Range* HChange::InferRange(Zone* zone) {
       !value()->CheckFlag(HInstruction::kUint32) &&
       input_range != NULL && input_range->IsInSmiRange()) {
     set_type(HType::Smi());
+    ClearGVNFlag(kChangesNewSpacePromotion);
   }
   Range* result = (input_range != NULL)
       ? input_range->Copy(zone)