lib/Target/Lanai/MCTargetDesc/LanaiMCExpr.h

   1 //===-- LanaiMCExpr.h - Lanai specific MC expression classes ----*- C++ -*-===//
   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 #ifndef LLVM_LIB_TARGET_LANAI_MCTARGETDESC_LANAIMCEXPR_H
  10 #define LLVM_LIB_TARGET_LANAI_MCTARGETDESC_LANAIMCEXPR_H
  11
  12 #include "llvm/MC/MCExpr.h"
  13 #include "llvm/MC/MCValue.h"
  14
  15 namespace llvm {
  16
  17 class LanaiMCExpr : public MCTargetExpr {
  18 public:
  19   enum VariantKind { VK_Lanai_None, VK_Lanai_ABS_HI, VK_Lanai_ABS_LO };
  20
  21 private:
  22   const VariantKind Kind;
  23   const MCExpr *Expr;
  24
  25   explicit LanaiMCExpr(VariantKind Kind, const MCExpr *Expr)
  26       : Kind(Kind), Expr(Expr) {}
  27
  28 public:
  29   static const LanaiMCExpr *create(VariantKind Kind, const MCExpr *Expr,
  30                                    MCContext &Ctx);
  31
  32   // Returns the kind of this expression.
  33   VariantKind getKind() const { return Kind; }
  34
  35   // Returns the child of this expression.
  36   const MCExpr *getSubExpr() const { return Expr; }
  37
  38   void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
  39   bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
  40                                  const MCFixup *Fixup) const override;
  41   void visitUsedExpr(MCStreamer &Streamer) const override;
  42   MCFragment *findAssociatedFragment() const override {
  43     return getSubExpr()->findAssociatedFragment();
  44   }
  45
  46   // There are no TLS LanaiMCExprs at the moment.
  47   void fixELFSymbolsInTLSFixups(MCAssembler & /*Asm*/) const override {}
  48
  49   static bool classof(const MCExpr *E) {
  50     return E->getKind() == MCExpr::Target;
  51   }
  52 };
  53 } // end namespace llvm
  54
  55 #endif