Fix invalid condition introduced with revision 15441.

src/hydrogen-uint32-analysis.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 195 matching lines @@
 
 
 void HUint32AnalysisPhase::Run() {
   if (!graph()->has_uint32_instructions()) return;
 
   ZoneList<HInstruction*>* uint32_instructions = graph()->uint32_instructions();
   for (int i = 0; i < uint32_instructions->length(); ++i) {
     // Analyze instruction and mark it with kUint32 if all
     // its uses are uint32 safe.
     HInstruction* current = uint32_instructions->at(i);
-    if (Uint32UsesAreSafe(current)) current->SetFlag(HInstruction::kUint32);
+    if (current->IsLinked() &&
+        current->representation().IsInteger32() &&
+        Uint32UsesAreSafe(current)) {
+      current->SetFlag(HInstruction::kUint32);
+    }
   }
 
   // Some phis might have been optimistically marked with kUint32 flag.
   // Remove this flag from those phis that are unsafe and propagate
   // this information transitively potentially clearing kUint32 flag
   // from some non-phi operations that are used as operands to unsafe phis.
   UnmarkUnsafePhis();
 }
 
 
 } }  // namespace v8::internal