When processing collected uint32 instructions skip those with non-Integer32 representation.

src/hydrogen.cc

 // Copyright 2012 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 2915 matching lines @@
 
 
 void HGraph::ComputeSafeUint32Operations() {
   if (!FLAG_opt_safe_uint32_operations || uint32_instructions_ == NULL) {
     return;
   }
 
   Uint32Analysis analysis(zone());
   for (int i = 0; i < uint32_instructions_->length(); ++i) {
     HInstruction* current = uint32_instructions_->at(i);
-    if (current->IsLinked()) analysis.Analyze(current);
+    if (current->IsLinked() && current->representation().IsInteger32()) {
+      analysis.Analyze(current);
+    }
   }
 
   // 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.
   analysis.UnmarkUnsafePhis();
 }
 
 
@@ skipping 6986 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal