[llvm] [ctx_prof] Profile flatterner (PR #104539)

[Mircea Trofin via llvm-commits]

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@@ -193,3 +201,35 @@ InstrProfCallsite *CtxProfAnalysis::getCallsiteInstrumentation(CallBase &CB) {
       return IPC;
   return nullptr;
 }
+
+static void
+preorderVisit(const PGOCtxProfContext::CallTargetMapTy &Profiles,
+              function_ref<void(const PGOCtxProfContext &)> Visitor) {
+  std::function<void(const PGOCtxProfContext &)> Traverser =
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mtrofin wrote:

See the "Add support for ICP" further up the graphite review stack. We expand more on these taversers.

https://github.com/llvm/llvm-project/pull/104539