[PATCH] D129369: [SystemZ][z/OS] Force alignment to fix build failure on z/OS

[Abhina Sree via Phabricator via llvm-commits]

abhina.sreeskantharajan updated this revision to Diff 443324.
abhina.sreeskantharajan added a comment.

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Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D129369/new/

https://reviews.llvm.org/D129369

Files:
  llvm/include/llvm/IR/Metadata.h


Index: llvm/include/llvm/IR/Metadata.h
===================================================================
--- llvm/include/llvm/IR/Metadata.h
+++ llvm/include/llvm/IR/Metadata.h
@@ -951,7 +951,9 @@
   /// The operands are in turn located immediately before the header.
   /// For resizable MDNodes, the space for the storage vector is also allocated
   /// immediately before the header, overlapping with the operands.
-  struct Header {
+  /// Explicity set alignment because bitfields by default have an
+  /// alignment of 1 on z/OS.
+  struct alignas(alignof(size_t)) Header {
     bool IsResizable : 1;
     bool IsLarge : 1;
     size_t SmallSize : 4;


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