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Commits on Oct 1, 2019

• [IndVars] An implementation of loop predication without a need for speculation

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Commits on Sep 24, 2019

• [GCRelocate] Add a peephole to canonicalize base pointer relocation

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Commits on Sep 12, 2019

• [Test] Restructure check lines to show differences between modes more clearly

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• Rename nonvolatile_load/store to simple_load/store [NFC]

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• [SDAG] Update generic code to conservatively check for isAtomic in addition to isVolatile

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• Remove a duplicate test

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• [SCEV] Add smin support to getRangeRef

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• Precommit tests for D67514

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• Precommit tests for generalization of load dereferenceability in loop

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• [LV] Support invariant addresses in speculation logic

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Commits on Sep 10, 2019

• [Loads] Move generic code out of vectorizer into a location it might be reused [NFC]

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• [ValueTracking] Factor our common speculation suppression logic [NFC]

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• [X86] Updated target specific selection dag code to conservatively check for isAtomic in addition to isVolatile

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Commits on Sep 9, 2019

• [Tests] Fix a typo in a test

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• [Tests] Precommit test case for D67372

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• [LoopVectorize] Leverage speculation safety to avoid masked.loads

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• [Tests] Add anyextend tests for unordered atomics

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• [SDAG] Add a isSimple cover functon to MemSDNode, just as we have in IR/MI [NFC]

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• Introduce infrastructure for an incremental port of SelectionDAG atomic load/store handling

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Commits on Sep 4, 2019

• [NFC] Switch last couple of invariant_load checks to use hasMetadata

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• Update CodeGen to use hasMetadata as appropriate [NFC]

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• [Instruction] Add hasMetadata(Kind) helper [NFC]

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Commits on Sep 3, 2019

• [GVN] Remove a todo introduced w/rL370791

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• [GVN] Propagate simple equalities from assumes within the tail of the block

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  9124b72

• [Tests/GVN] Precommit requested test additions from D66977

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Commits on Aug 29, 2019

• [Tests] Precommit a few cases where we're missing oppurtunities for block local simplications off assumes.

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Commits on Aug 28, 2019

• Use the handle --check-prefixes mechanism to de-verbosify a couple atomics tests [NFC]

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Commits on Aug 27, 2019

• [NFC] Assert preconditions and merge all users into one codepath in Loads.cpp

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• [Loads/SROA] Remove blatantly incorrect code and fix a bug revealed in the process

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• [NFC] Replace the FIXME I added in rL369989 with a comment clarifying the current code

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Commits on Aug 26, 2019

• Reorganize code and add a fixme to point out a bug in existing code [NFC]

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• Add a clarify comment for meaning of SafePointes [NFC]

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• Preland test cases for D66688 to make diffs clear.

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• [InstCombine] icmp eq/ne (gep inbounds P, Idx..), null -> icmp eq/ne P, null for vectors

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Commits on Aug 23, 2019

• Fix a bug in just submitted rL369789

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