[llvm] [MemProf] Disable hot hints by default, otherwise convert to NotCold (PR #124219)

[Snehasish Kumar via llvm-commits]

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@@ -222,6 +228,15 @@ void CallStackTrie::collectContextSizeInfo(
     collectContextSizeInfo(Caller.second, ContextSizeInfo);
 }
 
+void CallStackTrie::convertHotToNotCold(CallStackTrieNode *Node) {
+  if (Node->AllocTypes & static_cast<uint8_t>(AllocationType::Hot)) {
+    Node->AllocTypes &= ~static_cast<uint8_t>(AllocationType::Hot);
+    Node->AllocTypes |= static_cast<uint8_t>(AllocationType::NotCold);
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snehasish wrote:

Can we add some helpers to Node so that we don't have to sprinkle static_cast and bit masking operations in different places?

https://github.com/llvm/llvm-project/pull/124219