[Orc] Make JITLink default in LLJIT for ELF-based ARM targets

Author: weliveindetail

llvm/lib/ExecutionEngine/Orc/LLJIT.cpp

@@ -734,6 +734,12 @@ Error LLJITBuilderState::prepareForConstruction() {
     case Triple::aarch64:
       UseJITLink = !TT.isOSBinFormatCOFF();
       break;
+    case Triple::arm:
+    case Triple::armeb:
+    case Triple::thumb:
+    case Triple::thumbeb:
+      UseJITLink = TT.isOSBinFormatELF();
+      break;
     case Triple::x86_64:
       UseJITLink = !TT.isOSBinFormatCOFF();
       break;