1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 6f9268f..a6c5a26 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -105,6 +105,11 @@ static void GetObjCImageInfo(Module &M, unsigned &Version, unsigned &Flags,
 //                                  ELF
 //===----------------------------------------------------------------------===//
 
+TargetLoweringObjectFileELF::TargetLoweringObjectFileELF()
+    : TargetLoweringObjectFile() {
+  SupportDSOLocalEquivalentLowering = true;
+}
+
 void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
                                              const TargetMachine &TgtM) {
   TargetLoweringObjectFile::Initialize(Ctx, TgtM);
@@ -1007,6 +1012,20 @@ const MCExpr *TargetLoweringObjectFileELF::lowerRelativeReference(
       MCSymbolRefExpr::create(TM.getSymbol(RHS), getContext()), getContext());
 }
 
+const MCExpr *TargetLoweringObjectFileELF::lowerDSOLocalEquivalent(
+    const DSOLocalEquivalent *Equiv, const TargetMachine &TM) const {
+  assert(supportDSOLocalEquivalentLowering());
+
+  const auto *GV = Equiv->getGlobalValue();
+
+  // A PLT entry is not needed for dso_local globals.
+  if (GV->isDSOLocal() || GV->isImplicitDSOLocal())
+    return MCSymbolRefExpr::create(TM.getSymbol(GV), getContext());
+
+  return MCSymbolRefExpr::create(TM.getSymbol(GV), PLTRelativeVariantKind,
+                                 getContext());
+}
+
 MCSection *TargetLoweringObjectFileELF::getSectionForCommandLines() const {
   // Use ".GCC.command.line" since this feature is to support clang's
   // -frecord-gcc-switches which in turn attempts to mimic GCC's switch of the