[NFC] Leave a comment in Local.cpp about debug info & sample profiling (llvm#155296)

mtrofin · web-flow · commit 8f25ea2d73d9 · 2025-09-12T15:05:16.000-07:00
Issue llvm#152767
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
@@ -3342,8 +3342,11 @@ void llvm::hoistAllInstructionsInto(BasicBlock *DomBlock, Instruction *InsertPt,
   // retain their original debug locations (DILocations) and debug intrinsic
   // instructions.
   //
-  // Doing so would degrade the debugging experience and adversely affect the
-  // accuracy of profiling information.
+  // Doing so would degrade the debugging experience.
+  //
+  // FIXME: Issue #152767: debug info should also be the same as the
+  // original branch, **if** the user explicitly indicated that (for sampling
+  // PGO)
   //
   // Currently, when hoisting the instructions, we take the following actions:
   // - Remove their debug intrinsic instructions.
