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
56