[all-commits] [llvm/llvm-project] b3731b: [DAGCombiner] cache negative result from getMergeS...

[Princeton Ferro via All-commits]

  Branch: refs/heads/release/19.x
  Home:   https://github.com/llvm/llvm-project
  Commit: b3731b36421e23737be2b4785700267b96c3241f
      https://github.com/llvm/llvm-project/commit/b3731b36421e23737be2b4785700267b96c3241f
  Author: Princeton Ferro <pferro at nvidia.com>
  Date:   2024-10-01 (Tue, 01 Oct 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

  Log Message:
  -----------
  [DAGCombiner] cache negative result from getMergeStoreCandidates() (#106949)

Cache negative search result from getStoreMergeCandidates() so that
mergeConsecutiveStores() does not iterate quadratically over a
potentially long sequence of unmergeable stores.

(cherry picked from commit 8f77d37f256809766fd83a09c6d144b785e9165a)



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