1 files changed, 39 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp
new file mode 100644
index 000000000000..fbad05fb1759
--- /dev/null
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp
@@ -0,0 +1,39 @@
+//===-- ARMMCExpr.cpp - ARM specific MC expression classes ----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "ARMMCExpr.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCStreamer.h"
+using namespace llvm;
+
+#define DEBUG_TYPE "armmcexpr"
+
+const ARMMCExpr*
+ARMMCExpr::create(VariantKind Kind, const MCExpr *Expr,
+                       MCContext &Ctx) {
+  return new (Ctx) ARMMCExpr(Kind, Expr);
+}
+
+void ARMMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
+  switch (Kind) {
+  default: llvm_unreachable("Invalid kind!");
+  case VK_ARM_HI16: OS << ":upper16:"; break;
+  case VK_ARM_LO16: OS << ":lower16:"; break;
+  }
+
+  const MCExpr *Expr = getSubExpr();
+  if (Expr->getKind() != MCExpr::SymbolRef)
+    OS << '(';
+  Expr->print(OS, MAI);
+  if (Expr->getKind() != MCExpr::SymbolRef)
+    OS << ')';
+}
+
+void ARMMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
+  Streamer.visitUsedExpr(*getSubExpr());
+}