[llvm-branch-commits] [clang] [Clang] Add pointer field protection feature. (PR #172119)

[Florian Mayer via llvm-branch-commits]

================
@@ -15227,3 +15227,91 @@ bool ASTContext::useAbbreviatedThunkName(GlobalDecl VirtualMethodDecl,
   ThunksToBeAbbreviated[VirtualMethodDecl] = std::move(SimplifiedThunkNames);
   return Result;
 }
+
+bool ASTContext::arePFPFieldsTriviallyCopyable(const RecordDecl *RD) const {
+  bool IsPAuthSupported =
+      getTargetInfo().getTriple().getArch() == llvm::Triple::aarch64;
+  if (!IsPAuthSupported)
+    return true;
+  if (getLangOpts().PointerFieldProtectionTagged)
----------------
fmayer wrote:

super nit: maybe make this

```cc
if (!IsPAuthSupported || getLangOpts().PointerFieldProtectionTagged)
  return true;
return !isa<CXXRecordDecl>(RD) || cast<CXXRecordDecl>(RD)->hasTrivialDestructor();
```

https://github.com/llvm/llvm-project/pull/172119