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

[Peter Collingbourne via llvm-branch-commits]

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@@ -928,6 +936,11 @@ namespace {
       if (PointerAuthQualifier Q = F->getType().getPointerAuth();
           Q && Q.isAddressDiscriminated())
         return false;
+      // Non-trivially-copyable fields with pointer field protection need to be
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pcc wrote:

We could move lines 936-943 into a separate function that takes a QualType and call it from other places. However, I checked the other callers of `PointerAuthQualifier::isAddressDiscriminated` and I think almost all of them are already correct.

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