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//===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
#include "llvm/MC/MCAsmLayout.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCValue.h"
namespace llvm {
class PPCMCExpr : public MCTargetExpr {
public:
enum VariantKind {
VK_PPC_None,
VK_PPC_LO,
VK_PPC_HI,
VK_PPC_HA,
VK_PPC_HIGH,
VK_PPC_HIGHA,
VK_PPC_HIGHER,
VK_PPC_HIGHERA,
VK_PPC_HIGHEST,
VK_PPC_HIGHESTA
};
private:
const VariantKind Kind;
const MCExpr *Expr;
int64_t evaluateAsInt64(int64_t Value) const;
explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr)
: Kind(Kind), Expr(Expr) {}
public:
/// @name Construction
/// @{
static const PPCMCExpr *create(VariantKind Kind, const MCExpr *Expr,
MCContext &Ctx);
static const PPCMCExpr *createLo(const MCExpr *Expr, MCContext &Ctx) {
return create(VK_PPC_LO, Expr, Ctx);
}
static const PPCMCExpr *createHi(const MCExpr *Expr, MCContext &Ctx) {
return create(VK_PPC_HI, Expr, Ctx);
}
static const PPCMCExpr *createHa(const MCExpr *Expr, MCContext &Ctx) {
return create(VK_PPC_HA, Expr, Ctx);
}
/// @}
/// @name Accessors
/// @{
/// getOpcode - Get the kind of this expression.
VariantKind getKind() const { return Kind; }
/// getSubExpr - Get the child of this expression.
const MCExpr *getSubExpr() const { return Expr; }
/// @}
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
bool evaluateAsRelocatableImpl(MCValue &Res,
const MCAsmLayout *Layout,
const MCFixup *Fixup) const override;
void visitUsedExpr(MCStreamer &Streamer) const override;
MCFragment *findAssociatedFragment() const override {
return getSubExpr()->findAssociatedFragment();
}
// There are no TLS PPCMCExprs at the moment.
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
bool evaluateAsConstant(int64_t &Res) const;
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::Target;
}
};
} // end namespace llvm
#endif
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