Mehdi Amini cfe92407cd DAG Combiner: Fold SelectCC When Cond is UNDEF
In case folding a node end up with a NaN as operand for the select, 
the folding of the condition of the selectcc node returns "UNDEF".

Differential Revision: http://reviews.llvm.org/D6889



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225952 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-14 05:45:24 +00:00
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