[all-commits] [llvm/llvm-project] a35713: [InstCombine] Add test for #97053 (NFC)

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a3571376ad9555de07e4d8f74f92de1eaa4c486e
      https://github.com/llvm/llvm-project/commit/a3571376ad9555de07e4d8f74f92de1eaa4c486e
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-07-03 (Wed, 03 Jul 2024)

  Changed paths:
    M llvm/test/Transforms/InstCombine/scalarization.ll

  Log Message:
  -----------
  [InstCombine] Add test for #97053 (NFC)


  Commit: 4d2ae88d1617a910ec3a1436ce53579523ac2f97
      https://github.com/llvm/llvm-project/commit/4d2ae88d1617a910ec3a1436ce53579523ac2f97
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-07-03 (Wed, 03 Jul 2024)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
    M llvm/test/Transforms/InstCombine/scalarization.ll

  Log Message:
  -----------
  [InstCombine] Fix invalid scalarization of div

If the binop is not speculatable, and the extract index is out of
range, then scalarizing will perform the operation on a poison
operand, resulting in immediate UB, instead of the previous
poison result.

Fixes https://github.com/llvm/llvm-project/issues/97053.


Compare: https://github.com/llvm/llvm-project/compare/68a1944070ca...4d2ae88d1617

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