lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp

   1 //===-- ARMMCExpr.cpp - ARM specific MC expression classes ----------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "ARMMCExpr.h"
  10 #include "llvm/MC/MCContext.h"
  11 #include "llvm/MC/MCStreamer.h"
  12 using namespace llvm;
  13
  14 #define DEBUG_TYPE "armmcexpr"
  15
  16 const ARMMCExpr*
  17 ARMMCExpr::create(VariantKind Kind, const MCExpr *Expr,
  18                        MCContext &Ctx) {
  19   return new (Ctx) ARMMCExpr(Kind, Expr);
  20 }
  21
  22 void ARMMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
  23   switch (Kind) {
  24   default: llvm_unreachable("Invalid kind!");
  25   case VK_ARM_HI16: OS << ":upper16:"; break;
  26   case VK_ARM_LO16: OS << ":lower16:"; break;
  27   }
  28
  29   const MCExpr *Expr = getSubExpr();
  30   if (Expr->getKind() != MCExpr::SymbolRef)
  31     OS << '(';
  32   Expr->print(OS, MAI);
  33   if (Expr->getKind() != MCExpr::SymbolRef)
  34     OS << ')';
  35 }
  36
  37 void ARMMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
  38   Streamer.visitUsedExpr(*getSubExpr());
  39 }