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Author SHA1 Message Date
Andrea Di Biagio
bc72c8f0d8 [DAG] Expose NoSignedWrap, NoUnsignedWrap and Exact flags to SelectionDAG. 
This patch modifies SelectionDAGBuilder to construct SDNodes with associated
NoSignedWrap, NoUnsignedWrap and Exact flags coming from IR BinaryOperator
instructions.

Added a new SDNode type called 'BinaryWithFlagsSDNode' to allow accessing
nsw/nuw/exact flags during codegen.

Patch by Marcello Maggioni.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210467 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-06-09 12:32:53 +00:00