Chris Lattner 4c3b2b536c Clean up the code a bit. Use isInstructionTriviallyDead to be more aggressive ...

and more correct than use_empty().  This fixes PR635 and
SimplifyCFG/2005-10-02-InvokeSimplify.ll

llvm-svn: 23616

2005-10-03 23:43:43 +00:00

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