comment

Created using spr 1.3.4

Author: vitalybuka

clang/lib/CodeGen/BackendUtil.cpp

@@ -752,6 +752,9 @@ static void addSanitizers(const Triple &TargetTriple,
   }
 
   if (ClRemoveTraps) {
+    // We can optimize after inliner, and PGO profile matching, which are part
+    // of `buildModuleSimplificationPipeline`. The hook below is called after
+    // that, from `buildModuleOptimizationPipeline`.
     PB.registerOptimizerEarlyEPCallback([&](ModulePassManager &MPM,
                                             OptimizationLevel Level) {
       FunctionPassManager FPM;