1 files changed, 11 insertions, 10 deletions
diff --git a/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp b/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp
index 99857e083c6c..680806c4deb2 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp
@@ -1,9 +1,8 @@
 //===-- MipsMCExpr.cpp - Mips specific MC expression classes --------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
@@ -44,8 +43,10 @@ void MipsMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
     llvm_unreachable("MEK_None and MEK_Special are invalid");
     break;
   case MEK_DTPREL:
-    llvm_unreachable("MEK_DTPREL is used for TLS DIEExpr only");
-    break;
+    // MEK_DTPREL is used for marking TLS DIEExpr only
+    // and contains a regular sub-expression.
+    getSubExpr()->print(OS, MAI, true);
+    return;
   case MEK_CALL_HI16:
     OS << "%call_hi";
     break;
@@ -161,7 +162,9 @@ MipsMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
     case MEK_Special:
       llvm_unreachable("MEK_None and MEK_Special are invalid");
     case MEK_DTPREL:
-      llvm_unreachable("MEK_DTPREL is used for TLS DIEExpr only");
+      // MEK_DTPREL is used for marking TLS DIEExpr only
+      // and contains a regular sub-expression.
+      return getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup);
     case MEK_DTPREL_HI:
     case MEK_DTPREL_LO:
     case MEK_GOT:
@@ -249,9 +252,6 @@ void MipsMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
   case MEK_Special:
     llvm_unreachable("MEK_None and MEK_Special are invalid");
     break;
-  case MEK_DTPREL:
-    llvm_unreachable("MEK_DTPREL is used for TLS DIEExpr only");
-    break;
   case MEK_CALL_HI16:
   case MEK_CALL_LO16:
   case MEK_GOT:
@@ -274,6 +274,7 @@ void MipsMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
     if (const MipsMCExpr *E = dyn_cast<const MipsMCExpr>(getSubExpr()))
       E->fixELFSymbolsInTLSFixups(Asm);
     break;
+  case MEK_DTPREL:
   case MEK_DTPREL_HI:
   case MEK_DTPREL_LO:
   case MEK_TLSLDM: