[llvm-branch-commits] Add pointer field protection feature. (PR #133538)

[Oliver Hunt via llvm-branch-commits]

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@@ -1415,6 +1469,52 @@ void CodeGenFunction::CreateCoercedStore(llvm::Value *Src, Address Dst,
     }
   }
 
+  // Coercion directly through memory does not work if the structure has pointer
+  // field protection because the struct passed by value has a different bit
+  // pattern to the struct in memory, so we must read the elements one by one
+  // and use them to form the coerced structure.
+  std::vector<PFPField> PFPFields;
+  getContext().findPFPFields(SrcFETy, CharUnits::Zero(), PFPFields, true);
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ojhunt wrote:

Same as for CoercedLoad :D

https://github.com/llvm/llvm-project/pull/133538