[all-commits] [llvm/llvm-project] 472aa4: [CIR] Fix union RecordType::getTypeSizeInBits to r...

[adams381 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 472aa4e326be7f1ea7b182f2e55193474f22e6de
      https://github.com/llvm/llvm-project/commit/472aa4e326be7f1ea7b182f2e55193474f22e6de
  Author: adams381 <adams at nvidia.com>
  Date:   2026-04-14 (Tue, 14 Apr 2026)

  Changed paths:
    M clang/lib/CIR/Dialect/IR/CIRTypes.cpp
    M clang/unittests/CIR/CMakeLists.txt
    A clang/unittests/CIR/UnionTypeSizeTest.cpp

  Log Message:
  -----------
  [CIR] Fix union RecordType::getTypeSizeInBits to return bits (#191516)

RecordType::getTypeSizeInBits for unions was calling
dataLayout.getTypeSize (which returns bytes) instead of
dataLayout.getTypeSizeInBits.  This returned a value 8x too
small.  Also handle the empty-union case where
getLargestMember returns nullptr.



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