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

[Snehasish Kumar via llvm-commits]

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@@ -733,47 +733,52 @@ void PassBuilder::addRequiredLTOPreLinkPasses(ModulePassManager &MPM) {
   MPM.addPass(NameAnonGlobalPass());
 }
 
-void PassBuilder::addPGOInstrPasses(ModulePassManager &MPM,
-                                    OptimizationLevel Level, bool RunProfileGen,
-                                    bool IsCS, bool AtomicCounterUpdate,
-                                    std::string ProfileFile,
-                                    std::string ProfileRemappingFile,
-                                    ThinOrFullLTOPhase LTOPhase,
-                                    IntrusiveRefCntPtr<vfs::FileSystem> FS) {
+void PassBuilder::addPreInlinerPasses(ModulePassManager &MPM,
+                                      OptimizationLevel Level,
+                                      ThinOrFullLTOPhase LTOPhase) {
   assert(Level != OptimizationLevel::O0 && "Not expecting O0 here!");
-  if (!IsCS && !DisablePreInliner) {
-    InlineParams IP;
+  if (DisablePreInliner)
+    return;
+  InlineParams IP;
 
-    IP.DefaultThreshold = PreInlineThreshold;
+  IP.DefaultThreshold = PreInlineThreshold;
 
-    // FIXME: The hint threshold has the same value used by the regular inliner
-    // when not optimzing for size. This should probably be lowered after
-    // performance testing.
-    // FIXME: this comment is cargo culted from the old pass manager, revisit).
-    IP.HintThreshold = Level.isOptimizingForSize() ? PreInlineThreshold : 325;
-    ModuleInlinerWrapperPass MIWP(
-        IP, /* MandatoryFirst */ true,
-        InlineContext{LTOPhase, InlinePass::EarlyInliner});
-    CGSCCPassManager &CGPipeline = MIWP.getPM();
+  // FIXME: The hint threshold has the same value used by the regular inliner
+  // when not optimzing for size. This should probably be lowered after
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snehasish wrote:

typo: optimizing
Any thoughts about dropping these comments altogether?

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