[all-commits] [llvm/llvm-project] 4e62d2: [ConstantFold] Add test for load of padding (NFC)

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e62d210c43086136b6c95a3c1806afaf6b38651
      https://github.com/llvm/llvm-project/commit/4e62d210c43086136b6c95a3c1806afaf6b38651
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-01-05 (Wed, 05 Jan 2022)

  Changed paths:
    M llvm/test/Transforms/InstSimplify/ConstProp/loads.ll

  Log Message:
  -----------
  [ConstantFold] Add test for load of padding (NFC)

This currently load zero rather than undef.


  Commit: 3dc1907d063c1fb1617a0043d5fdb89104e7f7a3
      https://github.com/llvm/llvm-project/commit/3dc1907d063c1fb1617a0043d5fdb89104e7f7a3
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-01-05 (Wed, 05 Jan 2022)

  Changed paths:
    M clang/test/CodeGen/aapcs-align.cpp
    M llvm/lib/Analysis/ConstantFolding.cpp
    M llvm/test/Transforms/InstSimplify/ConstProp/loads.ll

  Log Message:
  -----------
  [ConstantFold] Use ConstantFoldLoadFromUniformValue() in more places

In particular, this also preserves undef when loading from padding,
rather than converting it to zero through a different codepath.

This is the remaining part of D115924.


Compare: https://github.com/llvm/llvm-project/compare/8f6af1d46889...3dc1907d063c