[PATCH] D103874: [IR] Rename the shufflevector's undef mask to poison

[Juneyoung Lee via Phabricator via cfe-commits]

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It seems llvm/lib/Target/X86/X86ISelLowering.cpp's LowerAVXCONCAT_VECTORS is relevant to efficient lowering of `shufflevector %x, freeze(poison), mask`.


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  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D103874/new/

https://reviews.llvm.org/D103874