[CodeGen] Hidden visibility for prof version var

[gulfemsavrun]

This patch adds hidden visibility to the variable
that is used by the single byte counters mode in
source-based code coverage.

[llvmbot]

@llvm/pr-subscribers-clang

@llvm/pr-subscribers-clang-codegen

Author: None (gulfemsavrun)

Changes

This patch adds hidden visibility to the variable
that is used by the single byte counters mode in
source-based code coverage.

---

Full diff: https://github.com/llvm/llvm-project/pull/93496.diff

1 Files Affected:

• (modified) clang/lib/CodeGen/CodeGenPGO.cpp (+1-1)

diff --git a/clang/lib/CodeGen/CodeGenPGO.cpp b/clang/lib/CodeGen/CodeGenPGO.cpp
index 76704c4d7be4a..db8e6f55302ad 100644
--- a/clang/lib/CodeGen/CodeGenPGO.cpp
+++ b/clang/lib/CodeGen/CodeGenPGO.cpp
@@ -1340,7 +1340,7 @@ void CodeGenPGO::setProfileVersion(llvm::Module &M) {
                                         llvm::APInt(64, ProfileVersion)),
         VarName);
 
-    IRLevelVersionVariable->setVisibility(llvm::GlobalValue::DefaultVisibility);
+    IRLevelVersionVariable->setVisibility(llvm::GlobalValue::HiddenVisibility);
     llvm::Triple TT(M.getTargetTriple());
     if (TT.supportsCOMDAT()) {
       IRLevelVersionVariable->setLinkage(llvm::GlobalValue::ExternalLinkage);