Check TRI->getReservedRegs because other allocators do it. Even though

it makes no sense for allocation_order iterators to visit reserved regs.
The inline spiller depends on AliasAnalysis.
Manage the Query state to avoid uninitialized or stale results.

llvm-svn: 118800

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/LiveIntervalUnion.h b/llvm/lib/CodeGen/LiveIntervalUnion.h
index b6eaa71cfaa..38f6ac3abdc 100644
--- a/llvm/lib/CodeGen/LiveIntervalUnion.h
+++ b/llvm/lib/CodeGen/LiveIntervalUnion.h
@@ -267,6 +267,9 @@ public:
     }
     
   private:
+    Query(const Query&);          // DO NOT IMPLEMENT
+    void operator=(const Query&); // DO NOT IMPLEMENT
+    
     // Private interface for queries
     void findIntersection(InterferenceResult &ir) const;
   };