[all-commits] [llvm/llvm-project] edd136: [InstCombine] Preserve metadata from orig load in ...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: edd1360208b2c4dc60d81b525d6e59d9fb491c05
      https://github.com/llvm/llvm-project/commit/edd1360208b2c4dc60d81b525d6e59d9fb491c05
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-01-16 (Thu, 16 Jan 2025)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
    M llvm/test/Transforms/InstCombine/loadstore-metadata.ll

  Log Message:
  -----------
  [InstCombine] Preserve metadata from orig load in select fold. (#115605)

When replacing load with a select on the address with a select and 2
loads of the values, copy poison-generating metadata from the original
load to the newly created loads, which are placed at the same place as
the original loads. We cannot copy metadata that may trigger UB.

PR: https://github.com/llvm/llvm-project/pull/115605



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