1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index c941529..4c20c5d 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -1233,6 +1233,24 @@ const MCExpr *TargetLoweringObjectFileELF::lowerSymbolDifference(
   return Res;
 }
 
+const MCExpr *TargetLoweringObjectFileELF::lowerRelativeReference(
+    const GlobalValue *LHS, const GlobalValue *RHS, int64_t Addend,
+    std::optional<int64_t> PCRelativeOffset, const TargetMachine &TM) const {
+  // We may only use a PLT-relative relocation to refer to unnamed_addr
+  // functions.
+  if (!LHS->hasGlobalUnnamedAddr() || !LHS->getValueType()->isFunctionTy())
+    return nullptr;
+
+  // Basic correctness checks.
+  if (LHS->getType()->getPointerAddressSpace() != 0 ||
+      RHS->getType()->getPointerAddressSpace() != 0 || LHS->isThreadLocal() ||
+      RHS->isThreadLocal())
+    return nullptr;
+
+  return lowerSymbolDifference(TM.getSymbol(LHS), TM.getSymbol(RHS), Addend,
+                               PCRelativeOffset);
+}
+
 // Reference the PLT entry of a function, optionally with a subtrahend (`RHS`).
 const MCExpr *TargetLoweringObjectFileELF::lowerDSOLocalEquivalent(
     const MCSymbol *LHS, const MCSymbol *RHS, int64_t Addend,