1 //===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
11 #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
13 #include "llvm/MC/MCAsmLayout.h"
14 #include "llvm/MC/MCExpr.h"
15 #include "llvm/MC/MCValue.h"
19 class PPCMCExpr : public MCTargetExpr {
33 const VariantKind Kind;
37 int64_t EvaluateAsInt64(int64_t Value) const;
39 explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin)
40 : Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {}
43 /// @name Construction
46 static const PPCMCExpr *Create(VariantKind Kind, const MCExpr *Expr,
47 bool isDarwin, MCContext &Ctx);
49 static const PPCMCExpr *CreateLo(const MCExpr *Expr,
50 bool isDarwin, MCContext &Ctx) {
51 return Create(VK_PPC_LO, Expr, isDarwin, Ctx);
54 static const PPCMCExpr *CreateHi(const MCExpr *Expr,
55 bool isDarwin, MCContext &Ctx) {
56 return Create(VK_PPC_HI, Expr, isDarwin, Ctx);
59 static const PPCMCExpr *CreateHa(const MCExpr *Expr,
60 bool isDarwin, MCContext &Ctx) {
61 return Create(VK_PPC_HA, Expr, isDarwin, Ctx);
68 /// getOpcode - Get the kind of this expression.
69 VariantKind getKind() const { return Kind; }
71 /// getSubExpr - Get the child of this expression.
72 const MCExpr *getSubExpr() const { return Expr; }
74 /// isDarwinSyntax - True if expression is to be printed using Darwin syntax.
75 bool isDarwinSyntax() const { return IsDarwin; }
80 void PrintImpl(raw_ostream &OS) const override;
81 bool EvaluateAsRelocatableImpl(MCValue &Res,
82 const MCAsmLayout *Layout,
83 const MCFixup *Fixup) const override;
84 void visitUsedExpr(MCStreamer &Streamer) const override;
85 MCSection *FindAssociatedSection() const override {
86 return getSubExpr()->FindAssociatedSection();
89 // There are no TLS PPCMCExprs at the moment.
90 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
92 bool EvaluateAsConstant(int64_t &Res) const;
94 static bool classof(const MCExpr *E) {
95 return E->getKind() == MCExpr::Target;
98 } // end namespace llvm