[all-commits] [llvm/llvm-project] 73b255: [DAG] Ensure extract_subvector(insert_subvector(x, ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 73b255c9f824157064212d341a255a962e746fd4
      https://github.com/llvm/llvm-project/commit/73b255c9f824157064212d341a255a962e746fd4
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-04-18 (Thu, 18 Apr 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AArch64/sve-fixed-length-extract-subvector.ll

  Log Message:
  -----------
  [DAG] Ensure extract_subvector(insert_subvector(x,y,c1),c2) --> extract_subvector(y,c2-c1) is working on fixed vector types

#87925 failed to ensure we weren't removing the extracted subvector from a scalable vector type

Thanks to @antmox for the headsup.



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