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Commits on Jul 21, 2021

• [SROA] avoid crash on memset with constant expression length

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Commits on Jul 20, 2021

• [ConstantFolding] avoid crashing on a fake math library call

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Commits on Jul 18, 2021

• [SimplifyCFG] add test to show miscompile from FoldBranchToCommonDest (PR51125); NFC

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• [SimplifyCFG] remove unnecessary state variable; NFC

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• [InstCombine] fold reassociative FP add into start value of fadd reduction

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• [InstCombine][test] add tests for fadd reductions; NFC

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Commits on Jul 16, 2021

• [SLP] add tests for poison-safe bool logic reductions; NFC

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Commits on Jul 15, 2021

• [SLP] avoid leaking poison in reduction of safe boolean logic ops

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Commits on Jul 14, 2021

• [InstCombine] reorder icmp with offset folds for better results

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• [InstCombine] add tests for icmp with constant offset and no-wrap flags; NFC

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• [SLP] match logical and/or as reduction candidates

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Commits on Jul 12, 2021

• [SLP] add test for multiple logical reductions; NFC

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• [InstCombine] reduce signbit test of logic ops to cmp with zero

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• [InstCombine][tests] add tests for signbit + logic; NFC

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Commits on Jul 9, 2021

• [PhaseOrdering] add tests for vector cmp reductions; NFC

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• [SLP] add tests for poison-safe logical reductions; NFC

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• [SLP] make invalid operand explicit for extra arg in reduction matching; NFC

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• [SLP] improve code comments; NFC

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• [SLP] make checks for cmp+select min/max more explicit

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Commits on Jul 7, 2021

• [SLP] rename variable to not be misleading; NFC

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Commits on Jul 6, 2021

• [InstSimplify] fix bug in poison propagation for FP ops

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• [InstSimplify][test] add tests for poison propagation through FP calls; NFC

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Commits on Jul 5, 2021

• [InstCombine] fold icmp slt/sgt of offset value with constant

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• [InstCombine][tests] add tests for signed icmp with constant and offset; NFC

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• [InstSimplify] fold extractelement of splat with variable extract index

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Commits on Jul 1, 2021

• [InstSimplify] do not propagate poison from select arm to icmp user

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• [InstCombine][test] add tests for icmp simplify miscompile (PR50944); NFC

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Commits on Jun 30, 2021

• [InstCombine] fold icmp ult of offset value with constant

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• [InstCombine][test] add tests for icmp ult with constant and offset; NFC

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• [InstCombine] fold icmp of offset value with constant

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• [InstCombine][test] add tests for icmp with constant and offset; NFC

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Commits on Jun 28, 2021

• [InstCombine] don't try to fold a constant expression that can trap (PR50906)

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• [InstCombine][test] add test for potential miscompile with constant expression; NFC (PR50906)

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Commits on Jun 27, 2021

• [InstCombine] hoist min/max intrinsics above select with constant op

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• [InstCombine][test] add tests for min/max intrinsics with select operand; NFC

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