[llvm] [CSSPGO]Add a flag to limit unsymbolized context depth (PR #121531)

[Lei Wang via llvm-commits]

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@@ -172,7 +177,13 @@ std::shared_ptr<AddrBasedCtxKey> AddressStack::getContextKey() {
   std::shared_ptr<AddrBasedCtxKey> KeyStr = std::make_shared<AddrBasedCtxKey>();
   KeyStr->Context = Stack;
   CSProfileGenerator::compressRecursionContext<uint64_t>(KeyStr->Context);
-  CSProfileGenerator::trimContext<uint64_t>(KeyStr->Context);
+  int Depth = CSProfileGenerator::MaxContextDepth != -1
+                  ? CSProfileGenerator::MaxContextDepth
+                  : KeyStr->Context.size();
+  Depth = CSProfMaxUnsymbolizedCtxDepth != -1
+              ? std::min(static_cast<int>(CSProfMaxUnsymbolizedCtxDepth), Depth)
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wlei-llvm wrote:

comment added

https://github.com/llvm/llvm-project/pull/121531