1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/IR/Globals.cpp b/llvm/lib/IR/Globals.cpp
index 11d33e2..0731fcb 100644
--- a/llvm/lib/IR/Globals.cpp
+++ b/llvm/lib/IR/Globals.cpp
@@ -289,11 +289,28 @@ void GlobalObject::setSection(StringRef S) {
 }
 
 void GlobalObject::setSectionPrefix(StringRef Prefix) {
+  if (Prefix.empty()) {
+    setMetadata(LLVMContext::MD_section_prefix, nullptr);
+    return;
+  }
   MDBuilder MDB(getContext());
   setMetadata(LLVMContext::MD_section_prefix,
               MDB.createGlobalObjectSectionPrefix(Prefix));
 }
 
+bool GlobalObject::updateSectionPrefix(StringRef Prefix) {
+  auto MD = getMetadata(LLVMContext::MD_section_prefix);
+  StringRef ExistingPrefix; // Empty by default.
+  if (MD != nullptr)
+    ExistingPrefix = cast<MDString>(MD->getOperand(1))->getString();
+
+  if (ExistingPrefix != Prefix) {
+    setSectionPrefix(Prefix);
+    return true;
+  }
+  return false;
+}
+
 std::optional<StringRef> GlobalObject::getSectionPrefix() const {
   if (MDNode *MD = getMetadata(LLVMContext::MD_section_prefix)) {
     [[maybe_unused]] StringRef MDName =