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from e28dccc9eb2 [LICM] Don't verify domtree/loopinfo unless EXPENSIVE_CHECK [...] new 0b7541acda9 [NFC][InstSimplify] More exaustive test coverage for 'A </> [...] new 04d4f957bc3 [InstSimplify] Handle more 'A </>/>=/<= B &&/|| (A - B) !=/ [...] new 3a50682a4b2 [NFC][InstCombine] Tests for 'base u<= offset && (base - of [...] new 810c818288f [InstCombine] foldUnsignedUnderflowCheck(): one last patter [...]

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Summary of changes: lib/Analysis/InstructionSimplify.cpp | 12 + lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 10 + .../result-of-usub-is-non-zero-and-no-overflow.ll | 35 ++- .../result-of-usub-is-non-zero-and-no-overflow.ll | 297 ++++++++++++++++----- 4 files changed, 282 insertions(+), 72 deletions(-)