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from 2fd56915295 [MemDep] Fixed handling of invariant.group new da5cef7c189 Constant fold launder of null and undef new 6ebd054bb61 Dissallow non-empty metadata for invariant.group new 461e372be69 Propagate nonnull and dereferenceable throught launder

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Summary of changes: docs/LangRef.rst | 11 +++--- docs/ReleaseNotes.rst | 2 ++ lib/Analysis/ConstantFolding.cpp | 13 +++++++- lib/Analysis/Loads.cpp | 7 ++-- lib/Analysis/MemoryDependenceAnalysis.cpp | 6 ++-- lib/Analysis/ValueTracking.cpp | 5 ++- lib/Transforms/Utils/Local.cpp | 5 +-- .../Analysis/ValueTracking/deref-bitcast-of-gep.ll | 25 ++++++++++++++ test/Analysis/ValueTracking/invariant.group.ll | 19 +++++++++++ test/Transforms/CodeGenPrepare/invariant.group.ll | 4 +-- test/Transforms/GVN/invariant.group.ll | 38 +++++++++------------ .../GlobalOpt/invariant.group.barrier.ll | 2 +- test/Transforms/InstCombine/invariant.group.ll | 34 +++++++++++++++++++ test/Transforms/NewGVN/invariant.group.ll | 39 +++++++++------------- 14 files changed, 146 insertions(+), 64 deletions(-) create mode 100644 test/Analysis/ValueTracking/invariant.group.ll create mode 100644 test/Transforms/InstCombine/invariant.group.ll