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Summary: With this patch, range metadata can be added to call/invoke including IntrinsicInst. Previously, it could only be added to load. Rename computeKnownBitsLoad to computeKnownBitsFromRangeMetadata because range metadata is not only used by load. Update the language reference to reflect this change. Test Plan: Add several tests in range-2.ll to confirm the verifier is happy with having range metadata on call/invoke. Add two tests in AddOverFlow.ll to confirm annotating range metadata to call/invoke can benefit InstCombine. Reviewers: meheff, nlewycky, reames, hfinkel, eliben Reviewed By: eliben Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4187 llvm-svn: 211281
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