[PATCH] D96345: [DAG] Fold shuffle(bop(shuffle(x,y),shuffle(z,w)),bop(shuffle(a,b),shuffle(c,d)))
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Feb 15 08:36:16 PST 2021
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RKSimon updated this revision to Diff 323770.
RKSimon added a comment.
Don't merge shuffles if it would introduce any undefined elements
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D96345/new/
https://reviews.llvm.org/D96345
Files:
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
llvm/lib/Target/X86/X86ISelLowering.cpp
llvm/test/CodeGen/X86/bitcast-and-setcc-256.ll
llvm/test/CodeGen/X86/promote-cmp.ll
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