Hal Finkel 77364b7a20 Prevent assert in CombinerGlobalAA with null values
DAGCombiner::isAlias can be called with SrcValue1 or SrcValue2 null, and we
can't use AA in this case (if we try, then the casting code in AA will assert).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190763 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-15 02:19:49 +00:00
..
2013-09-12 22:02:31 +00:00
2013-09-10 23:22:56 +00:00
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