NVPTXMCExpr.h
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//===-- NVPTXMCExpr.h - NVPTX 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
//
//===----------------------------------------------------------------------===//
// Modeled after ARMMCExpr
#ifndef LLVM_LIB_TARGET_NVPTX_NVPTXMCEXPR_H
#define LLVM_LIB_TARGET_NVPTX_NVPTXMCEXPR_H
#include "llvm/ADT/APFloat.h"
#include "llvm/MC/MCExpr.h"
#include <utility>
namespace llvm {
class NVPTXFloatMCExpr : public MCTargetExpr {
public:
enum VariantKind {
VK_NVPTX_None,
VK_NVPTX_HALF_PREC_FLOAT, // FP constant in half-precision
VK_NVPTX_SINGLE_PREC_FLOAT, // FP constant in single-precision
VK_NVPTX_DOUBLE_PREC_FLOAT // FP constant in double-precision
};
private:
const VariantKind Kind;
const APFloat Flt;
explicit NVPTXFloatMCExpr(VariantKind Kind, APFloat Flt)
: Kind(Kind), Flt(std::move(Flt)) {}
public:
/// @name Construction
/// @{
static const NVPTXFloatMCExpr *create(VariantKind Kind, const APFloat &Flt,
MCContext &Ctx);
static const NVPTXFloatMCExpr *createConstantFPHalf(const APFloat &Flt,
MCContext &Ctx) {
return create(VK_NVPTX_HALF_PREC_FLOAT, Flt, Ctx);
}
static const NVPTXFloatMCExpr *createConstantFPSingle(const APFloat &Flt,
MCContext &Ctx) {
return create(VK_NVPTX_SINGLE_PREC_FLOAT, Flt, Ctx);
}
static const NVPTXFloatMCExpr *createConstantFPDouble(const APFloat &Flt,
MCContext &Ctx) {
return create(VK_NVPTX_DOUBLE_PREC_FLOAT, Flt, Ctx);
}
/// @}
/// @name Accessors
/// @{
/// getOpcode - Get the kind of this expression.
VariantKind getKind() const { return Kind; }
/// getSubExpr - Get the child of this expression.
APFloat getAPFloat() const { return Flt; }
/// @}
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
bool evaluateAsRelocatableImpl(MCValue &Res,
const MCAsmLayout *Layout,
const MCFixup *Fixup) const override {
return false;
}
void visitUsedExpr(MCStreamer &Streamer) const override {};
MCFragment *findAssociatedFragment() const override { return nullptr; }
// There are no TLS NVPTXMCExprs at the moment.
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::Target;
}
};
/// A wrapper for MCSymbolRefExpr that tells the assembly printer that the
/// symbol should be enclosed by generic().
class NVPTXGenericMCSymbolRefExpr : public MCTargetExpr {
private:
const MCSymbolRefExpr *SymExpr;
explicit NVPTXGenericMCSymbolRefExpr(const MCSymbolRefExpr *_SymExpr)
: SymExpr(_SymExpr) {}
public:
/// @name Construction
/// @{
static const NVPTXGenericMCSymbolRefExpr
*create(const MCSymbolRefExpr *SymExpr, MCContext &Ctx);
/// @}
/// @name Accessors
/// @{
/// getOpcode - Get the kind of this expression.
const MCSymbolRefExpr *getSymbolExpr() const { return SymExpr; }
/// @}
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
bool evaluateAsRelocatableImpl(MCValue &Res,
const MCAsmLayout *Layout,
const MCFixup *Fixup) const override {
return false;
}
void visitUsedExpr(MCStreamer &Streamer) const override {};
MCFragment *findAssociatedFragment() const override { return nullptr; }
// There are no TLS NVPTXMCExprs at the moment.
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
static bool classof(const MCExpr *E) {
return E->getKind() == MCExpr::Target;
}
};
} // end namespace llvm
#endif