[llvm] 8f25ea2 - [NFC] Leave a comment in `Local.cpp` about debug info & sample profiling (#155296)

[via llvm-commits]

Author: Mircea Trofin
Date: 2025-09-12T15:05:16-07:00
New Revision: 8f25ea2d73d9a4a64e7ab26e6b1d7a8f73605713

URL: https://github.com/llvm/llvm-project/commit/8f25ea2d73d9a4a64e7ab26e6b1d7a8f73605713
DIFF: https://github.com/llvm/llvm-project/commit/8f25ea2d73d9a4a64e7ab26e6b1d7a8f73605713.diff

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

Issue #152767

Added: 
    

Modified: 
    llvm/lib/Transforms/Utils/Local.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index 2cfd70a1746c8..57dc1b38b8ec3 100644
--- 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.