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-rw-r--r--compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
index f1a898b324c..22ceb57762b 100644
--- a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
@@ -1438,6 +1438,9 @@ LLVMRustCreateThinLTOData(LLVMRustThinLTOModule *modules,
   };
 
 #if LLVM_VERSION_GE(13,0)
+  // Uses FromPrevailing visibility scheme which works for many binary
+  // formats. We probably could and should use ELF visibility scheme for many of
+  // our targets, however.
   lto::Config conf;
   thinLTOResolvePrevailingInIndex(conf, Ret->Index, isPrevailing, recordNewLinkage,
                                   Ret->GUIDPreservedSymbols);