[all-commits] [llvm/llvm-project] 6e2329: [SystemZ][z/OS] Force alignment to fix build failu...

[Abhina Sree via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6e2329e33ae3f0239785af0fb69bf73ebe3b8899
      https://github.com/llvm/llvm-project/commit/6e2329e33ae3f0239785af0fb69bf73ebe3b8899
  Author: Abhina Sreeskantharajan <Abhina.Sreeskantharajan at ibm.com>
  Date:   2022-07-11 (Mon, 11 Jul 2022)

  Changed paths:
    M llvm/include/llvm/IR/Metadata.h

  Log Message:
  -----------
  [SystemZ][z/OS] Force alignment to fix build failure on z/OS

The following commit https://reviews.llvm.org/D125998 added a static_assert which was triggered on z/OS because bitfields are always aligned to 1 regardless of type.

```
error: static_assert failed due to requirement 'alignof(llvm::SmallVector<llvm::MDOperand, 0>) <= alignof(llvm::MDNode::Header)' "LargeStorageVector too strongly aligned"
```

The solution was to force the alignment to be size_t.

Reviewed By: wolfgangp

Differential Revision: https://reviews.llvm.org/D129369