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[InstCombine][NFC] Tests for 'signed truncation check' optimization

Authored by lebedev.ri on Aug 8 2018, 10:46 AM.

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spatel accepted this revision.Aug 13 2018, 8:20 AM
spatel added a subscriber: spatel.

Tests LGTM. It might help me or other reviewers see how these patterns escape the current set of transforms in foldAndOfICmps(), so please commit.

This revision is now accepted and ready to land.Aug 13 2018, 8:20 AM
This revision was automatically updated to reflect the committed changes.