[llvm] [MemProf] Tolerate missing leaf debug frames (PR #71233)

[Snehasish Kumar via llvm-commits]

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@@ -628,11 +628,13 @@ class PassBuilder {
   Error parseModulePassPipeline(ModulePassManager &MPM,
                                 ArrayRef<PipelineElement> Pipeline);
 
+  void addPreInlinerPasses(ModulePassManager &MPM, OptimizationLevel Level,
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snehasish wrote:

Can we add some comments here about what the PreInliner is and what passes are added?

https://github.com/llvm/llvm-project/pull/71233