[llvm] 8be84e1 - [LTO] Add debug logging for module ID <-> path mapping

[Jez Ng via llvm-commits]

Author: Jez Ng
Date: 2023-03-09T13:25:48-08:00
New Revision: 8be84e1e31126a60b585a53a2943d0a6eafe4be2

URL: https://github.com/llvm/llvm-project/commit/8be84e1e31126a60b585a53a2943d0a6eafe4be2
DIFF: https://github.com/llvm/llvm-project/commit/8be84e1e31126a60b585a53a2943d0a6eafe4be2.diff

LOG: [LTO] Add debug logging for module ID <-> path mapping

It's helpful

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D145541

Added: 
    

Modified: 
    llvm/lib/LTO/LTO.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/LTO/LTO.cpp b/llvm/lib/LTO/LTO.cpp
index 1b1cbe463ad7f..1f273a8e5025f 100644
--- a/llvm/lib/LTO/LTO.cpp
+++ b/llvm/lib/LTO/LTO.cpp
@@ -925,13 +925,16 @@ Error LTO::addThinLTO(BitcodeModule BM, ArrayRef<InputFile::Symbol> Syms,
     }
   }
 
+  uint64_t ModuleId = ThinLTO.ModuleMap.size();
   if (Error Err =
           BM.readSummary(ThinLTO.CombinedIndex, BM.getModuleIdentifier(),
-                         ThinLTO.ModuleMap.size(), [&](GlobalValue::GUID GUID) {
+                         ModuleId, [&](GlobalValue::GUID GUID) {
                            return ThinLTO.PrevailingModuleForGUID[GUID] ==
                                   BM.getModuleIdentifier();
                          }))
     return Err;
+  LLVM_DEBUG(dbgs() << "Module " << ModuleId << ": " << BM.getModuleIdentifier()
+                    << "\n");
 
   for (const InputFile::Symbol &Sym : Syms) {
     assert(ResI != ResE);