[all-commits] [llvm/llvm-project] d75fb1: [VectorCombine] Use poison insteaf of undef as pla...
Nuno Lopes via All-commits
all-commits at lists.llvm.org
Wed Jul 19 02:29:23 PDT 2023
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: d75fb179631e7137def7e33d1845e41bcf05e1b4
https://github.com/llvm/llvm-project/commit/d75fb179631e7137def7e33d1845e41bcf05e1b4
Author: Nuno Lopes <nuno.lopes at tecnico.ulisboa.pt>
Date: 2023-07-19 (Wed, 19 Jul 2023)
Changed paths:
M llvm/lib/Transforms/Vectorize/VectorCombine.cpp
M llvm/test/Transforms/VectorCombine/X86/extract-cmp-binop.ll
Log Message:
-----------
[VectorCombine] Use poison insteaf of undef as placeholder [NFC]
These vector lanes are never accessed. They are used for shifting a value into the right lane
and therefore only 1 value of the whole vector is actually used
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