[clang] Run analysis in post-order of the call-graph #172862 (PR #174178)

[Gábor Horváth via cfe-commits]

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@@ -2915,6 +2918,43 @@ class LifetimeSafetyReporterImpl : public LifetimeSafetyReporter {
 } // namespace
 } // namespace clang::lifetimes
 
+class CallGraphBuilder : public clang::RecursiveASTVisitor<CallGraphBuilder> {
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Xazax-hun wrote:

Is there any reason we couldn't use `CallGraph::addToCallGraph`? My understanding is that it should visit the bodies and collect the call expressions. 

https://github.com/llvm/llvm-project/pull/174178