NFC. Fixing warnings from adding DXContainer

Adds DXContainer to switch statements in Clang and LLDB to silence
warnings.

clang/lib/CodeGen/BackendUtil.cpp

@@ -287,6 +287,7 @@ static bool asanUseGlobalsGC(const Triple &T, const CodeGenOptions &CGOpts) {
   case Triple::XCOFF:
     llvm::report_fatal_error("ASan not implemented for XCOFF.");
   case Triple::Wasm:
+  case Triple::DXContainer:
   case Triple::UnknownObjectFormat:
     break;
   }

clang/lib/CodeGen/CGObjCMac.cpp

@@ -5069,6 +5069,7 @@ std::string CGObjCCommonMac::GetSectionName(StringRef Section,
   case llvm::Triple::Wasm:
   case llvm::Triple::GOFF:
   case llvm::Triple::XCOFF:
+  case llvm::Triple::DXContainer:
     llvm::report_fatal_error(
         "Objective-C support is unimplemented for object file format");
   }

clang/lib/CodeGen/CodeGenModule.cpp

@@ -5490,6 +5490,8 @@ CodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) {
     llvm_unreachable("GOFF is not yet implemented");
   case llvm::Triple::XCOFF:
     llvm_unreachable("XCOFF is not yet implemented");
+  case llvm::Triple::DXContainer:
+    llvm_unreachable("DXContainer is not yet implemented");
   case llvm::Triple::COFF:
   case llvm::Triple::ELF:
   case llvm::Triple::Wasm:

lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp

@@ -2230,6 +2230,7 @@ bool GDBRemoteCommunicationClient::GetCurrentProcessInfo(bool allow_lazy) {
         case llvm::Triple::GOFF:
         case llvm::Triple::Wasm:
         case llvm::Triple::XCOFF:
+        case llvm::Triple::DXContainer:
           LLDB_LOGF(log, "error: not supported target architecture");
           return false;
         case llvm::Triple::UnknownObjectFormat: