[clang] [Modules] Delay deserialization of preferred_name attribute at r… (PR #122726)

[Chuanqi Xu via cfe-commits]

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@@ -3118,18 +3120,27 @@ class AttrReader {
     return Reader.readVersionTuple();
   }
 
+  void skipInts(unsigned N) { Reader.skipInts(N); }
+
+  unsigned getCurrentIdx() { return Reader.getIdx(); }
+
   OMPTraitInfo *readOMPTraitInfo() { return Reader.readOMPTraitInfo(); }
 
   template <typename T> T *readDeclAs() { return Reader.readDeclAs<T>(); }
 };
 }
 
+/// Reads one attribute from the current stream position, advancing Idx.
 Attr *ASTRecordReader::readAttr() {
   AttrReader Record(*this);
   auto V = Record.readInt();
   if (!V)
     return nullptr;
 
+  // Read and ignore the skip count, since attribute deserialization is not
+  // deferred on this pass.
+  Record.readInt();
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ChuanqiXu9 wrote:

nit: skipInt();

https://github.com/llvm/llvm-project/pull/122726