[llvm] [ctxprof] Support for "move" semantics for the contextual root (PR #134192)

[Snehasish Kumar via llvm-commits]

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@@ -1859,6 +1868,15 @@ Expected<bool> FunctionImporter::importFunctions(
   LLVM_DEBUG(dbgs() << "Starting import for Module "
                     << DestModule.getModuleIdentifier() << "\n");
   unsigned ImportedCount = 0, ImportedGVCount = 0;
+  // Before carrying out any imports, see if this module defines functions in
+  // MoveSymbolGUID. If it does, delete them here (but leave the declaration).
+  // The function will be imported elsewhere, as extenal linkage, and the
+  // destination doesn't yet have its definition.
+  DenseSet<GlobalValue::GUID> MoveSymbolGUIDSet;
+  MoveSymbolGUIDSet.insert_range(MoveSymbolGUID);
+  for (auto &F : DestModule)
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snehasish wrote:

nit: braces for the loop body.

https://github.com/llvm/llvm-project/pull/134192