[llvm] [ctx_prof] CtxProfAnalysis: populate module data (PR #102930)

[Snehasish Kumar via llvm-commits]

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@@ -66,6 +66,36 @@ Value toJSON(const PGOCtxProfContext::CallTargetMapTy &P) {
 } // namespace json
 } // namespace llvm
 
+const char *AssignUniqueIDPass::GUIDMetadataName = "unique_id";
+
+PreservedAnalyses AssignUniqueIDPass::run(Module &M,
+                                          ModuleAnalysisManager &MAM) {
+  for (auto &F : M.functions()) {
+    if (F.isDeclaration())
+      continue;
+    if (F.getMetadata(GUIDMetadataName))
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snehasish wrote:

Document the behaviour that we only assign a new guid if it does not exist?

https://github.com/llvm/llvm-project/pull/102930