1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/lib/IR/Globals.cpp b/llvm/lib/IR/Globals.cpp
index 7f4b6234b0b..b0d00a42fb5 100644
--- a/llvm/lib/IR/Globals.cpp
+++ b/llvm/lib/IR/Globals.cpp
@@ -99,6 +99,30 @@ void GlobalObject::copyAttributesFrom(const GlobalValue *Src) {
   }
 }
 
+std::string GlobalValue::getGlobalIdentifier(StringRef Name,
+                                             GlobalValue::LinkageTypes Linkage,
+                                             StringRef FileName) {
+
+  // Value names may be prefixed with a binary '1' to indicate
+  // that the backend should not modify the symbols due to any platform
+  // naming convention. Do not include that '1' in the PGO profile name.
+  if (Name[0] == '\1')
+    Name = Name.substr(1);
+
+  std::string NewName = Name;
+  if (llvm::GlobalValue::isLocalLinkage(Linkage)) {
+    // For local symbols, prepend the main file name to distinguish them.
+    // Do not include the full path in the file name since there's no guarantee
+    // that it will stay the same, e.g., if the files are checked out from
+    // version control in different locations.
+    if (FileName.empty())
+      NewName = NewName.insert(0, "<unknown>:");
+    else
+      NewName = NewName.insert(0, FileName.str() + ":");
+  }
+  return NewName;
+}
+
 const char *GlobalValue::getSection() const {
   if (auto *GA = dyn_cast<GlobalAlias>(this)) {
     // In general we cannot compute this at the IR level, but we try.