[llvm] [C API] Add accessors for function prefix and prologue data (PR #82193)

[Nikita Popov via llvm-commits]

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@@ -1397,6 +1397,14 @@ static void clone_symbols(LLVMModuleRef Src, LLVMModuleRef M) {
     }
     LLVMDisposeValueMetadataEntries(AllMetadata);
 
+    // Copy any prefix data that may be on the function
+    if (LLVMHasPrefixData(Cur))
+      LLVMSetPrefixData(Fun, LLVMGetPrefixData(Cur));
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nikic wrote:

Missing cloning here?

https://github.com/llvm/llvm-project/pull/82193