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Commit 4db1abea authored by Andrea Di Biagio's avatar Andrea Di Biagio
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[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.

llvm-svn: 210467
parent 5260dba3
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