llvm/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:
  26     OS << ":upper16:";
  27     break;
  28   case VK_ARM_LO16:
  29     OS << ":lower16:";
  30     break;
  31   case VK_ARM_HI_8_15:
  32     OS << ":upper8_15:";
  33     break;
  34   case VK_ARM_HI_0_7:
  35     OS << ":upper0_7:";
  36     break;
  37   case VK_ARM_LO_8_15:
  38     OS << ":lower8_15:";
  39     break;
  40   case VK_ARM_LO_0_7:
  41     OS << ":lower0_7:";
  42     break;
  43   }
  44
  45   const MCExpr *Expr = getSubExpr();
  46   if (Expr->getKind() != MCExpr::SymbolRef)
  47     OS << '(';
  48   Expr->print(OS, MAI);
  49   if (Expr->getKind() != MCExpr::SymbolRef)
  50     OS << ')';
  51 }
  52
  53 void ARMMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
  54   Streamer.visitUsedExpr(*getSubExpr());
  55 }