lib/Target/Lanai/MCTargetDesc/LanaiMCExpr.cpp

   1 //===-- LanaiMCExpr.cpp - Lanai 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 "LanaiMCExpr.h"
  10 #include "llvm/MC/MCAssembler.h"
  11 #include "llvm/MC/MCContext.h"
  12 #include "llvm/MC/MCStreamer.h"
  13 using namespace llvm;
  14
  15 #define DEBUG_TYPE "lanaimcexpr"
  16
  17 const LanaiMCExpr *LanaiMCExpr::create(VariantKind Kind, const MCExpr *Expr,
  18                                        MCContext &Ctx) {
  19   return new (Ctx) LanaiMCExpr(Kind, Expr);
  20 }
  21
  22 void LanaiMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
  23   if (Kind == VK_Lanai_None) {
  24     Expr->print(OS, MAI);
  25     return;
  26   }
  27
  28   switch (Kind) {
  29   default:
  30     llvm_unreachable("Invalid kind!");
  31   case VK_Lanai_ABS_HI:
  32     OS << "hi";
  33     break;
  34   case VK_Lanai_ABS_LO:
  35     OS << "lo";
  36     break;
  37   }
  38
  39   OS << '(';
  40   const MCExpr *Expr = getSubExpr();
  41   Expr->print(OS, MAI);
  42   OS << ')';
  43 }
  44
  45 void LanaiMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
  46   Streamer.visitUsedExpr(*getSubExpr());
  47 }
  48
  49 bool LanaiMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
  50                                             const MCAsmLayout *Layout,
  51                                             const MCFixup *Fixup) const {
  52   if (!getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup))
  53     return false;
  54
  55   Res =
  56       MCValue::get(Res.getSymA(), Res.getSymB(), Res.getConstant(), getKind());
  57
  58   return true;
  59 }