[all-commits] [llvm/llvm-project] 6b3220: [InstCombine] Avoid crash on aggregate types in Si...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6b3220afa62bb1e77acf18dc7b622df9223e1ea8
      https://github.com/llvm/llvm-project/commit/6b3220afa62bb1e77acf18dc7b622df9223e1ea8
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2024-10-04 (Fri, 04 Oct 2024)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
    M llvm/test/Transforms/InstCombine/simplify-demanded-fpclass.ll

  Log Message:
  -----------
  [InstCombine] Avoid crash on aggregate types in SimplifyDemandedUseFPClass (#111128)

The disables folding for FP aggregates that are not poison/posZero
types, which is currently not supported. Note: To fully handle this
aggregates would also likely require teaching `computeKnownFPClass()` to
handle array and struct constants (which does not seem implemented
outside of zero init).



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