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from 52b8c95 [COFFDumper] Validate that the next offset is not too large new e557ebe [PM] SCCP should preserve GlobalsAA even if the IR is mutated. new 2f6c3f7 [ValueTracking] ICmp instructions propagate poison new 11ed8ed [SCEV] Don't always add no-wrap flags to post-inc add recs

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Summary of changes: include/llvm/Analysis/ScalarEvolution.h | 10 +++ lib/Analysis/ScalarEvolution.cpp | 98 ++++++++++++++++++++-- lib/Analysis/ValueTracking.cpp | 5 ++ lib/Transforms/Scalar/SCCP.cpp | 5 +- test/Analysis/ScalarEvolution/flags-from-poison.ll | 24 ++++++ .../ScalarEvolution/infer-prestart-no-wrap.ll | 12 ++- .../ScalarEvolution/nowrap-preinc-limits.ll | 3 +- test/Analysis/ScalarEvolution/nsw.ll | 18 ++-- test/Analysis/ScalarEvolution/pr27315.ll | 31 +++++++ test/Transforms/IndVarSimplify/elim-extend.ll | 2 +- 10 files changed, 189 insertions(+), 19 deletions(-) create mode 100644 test/Analysis/ScalarEvolution/pr27315.ll