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Commits on Jan 16, 2019

• [X86] Add additional saturating add/sub vector tests; NFC

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Commits on Jan 15, 2019

• Reapply "[CodeGen][X86] Expand USUBSAT to UMAX+SUB, also for vectors"

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Commits on Jan 14, 2019

• Revert "[CodeGen][X86] Expand USUBSAT to UMAX+SUB, also for vectors"

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• [CodeGen][X86] Expand USUBSAT to UMAX+SUB, also for vectors

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Commits on Jan 13, 2019

• [X86] Rename overly verbose method; NFC

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Commits on Jan 12, 2019

• [X86] Add more usub.sat vector tests; NFC

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• Reapply "[DemandedBits] Use SetVector for Worklist"

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Commits on Jan 11, 2019

• [ConstantFolding] Fold undef for integer intrinsics

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Commits on Jan 7, 2019

• Revert "[DemandedBits] Use SetVector for Worklist"

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• [DemandedBits] Use SetVector for Worklist

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Commits on Jan 5, 2019

• [InstCombine] Improve cttz/ctlz + icmp tests; NFC

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• [InstCombine] Add cttz/ctlz + icmp ugt/ult tests; NFC

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• [InstCombine] Relax cttz/ctlz with select on zero

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• [InstCombine] Add vector tests for select + ctlz/cttz; NFC

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Commits on Jan 4, 2019

• [X86] Fix warning; NFC

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• [BDCE] Remove dead uses of arguments

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Commits on Jan 2, 2019

• [BDCE] Fix typo in test; NFC

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• [BDCE] Remove instructions without demanded bits

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Commits on Jan 1, 2019

• [BDCE] Regenerate test checks; NFC

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• [BDCE] Remove -instsimplify from BDCE test; NFC

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• Reapply "[BDCE][DemandedBits] Detect dead uses of undead instructions"

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Commits on Dec 20, 2018

• [ConstantFolding] Consolidate and extend bitcount intrinsic tests; NFC

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• [ConstantFolding] Add undef tests for overflow intrinsics; NFC

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• [ConstantFolding] Regenerate test checks; NFC

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• [ConstantFolding] Add tests for funnel shifts with undef operands; NFC

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• [ConstantFolding] Add tests for sat add/sub with undefs; NFC

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• [ConstantFolding] Split up saturating add/sub tests; NFC

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Commits on Dec 19, 2018

• Revert "[BDCE][DemandedBits] Detect dead uses of undead instructions"

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• [BDCE][DemandedBits] Detect dead uses of undead instructions

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Commits on Dec 18, 2018

• [InstCombine] Simplify cttz/ctlz + icmp eq/ne into mask check

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• [X86] Use SADDSAT/SSUBSAT instead of ADDS/SUBS

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• [X86] Use UADDSAT/USUBSAT instead of ADDUS/SUBUS

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• [SelectionDAG][X86] Fix [US](ADD|SUB)SAT vector legalization, add tests

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Commits on Dec 17, 2018

• [InstSimplify] Simplify saturating add/sub + icmp

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Commits on Dec 16, 2018

• [InstCombine] Add cttz/ctlz + select non-bitwidth tests; NFC

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