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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
//===-- NVPTXMCExpr.h - NVPTX specific MC expression classes ----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// Modeled after ARMMCExpr
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#ifndef LLVM_LIB_TARGET_NVPTX_NVPTXMCEXPR_H
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#define LLVM_LIB_TARGET_NVPTX_NVPTXMCEXPR_H
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#include "llvm/ADT/APFloat.h"
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#include "llvm/MC/MCExpr.h"
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#include <utility>
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namespace llvm {
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class NVPTXFloatMCExpr : public MCTargetExpr {
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public:
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enum VariantKind {
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VK_NVPTX_None,
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VK_NVPTX_HALF_PREC_FLOAT, // FP constant in half-precision
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VK_NVPTX_SINGLE_PREC_FLOAT, // FP constant in single-precision
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VK_NVPTX_DOUBLE_PREC_FLOAT // FP constant in double-precision
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};
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private:
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const VariantKind Kind;
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const APFloat Flt;
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explicit NVPTXFloatMCExpr(VariantKind Kind, APFloat Flt)
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: Kind(Kind), Flt(std::move(Flt)) {}
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public:
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/// @name Construction
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/// @{
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static const NVPTXFloatMCExpr *create(VariantKind Kind, const APFloat &Flt,
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MCContext &Ctx);
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static const NVPTXFloatMCExpr *createConstantFPHalf(const APFloat &Flt,
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MCContext &Ctx) {
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return create(VK_NVPTX_HALF_PREC_FLOAT, Flt, Ctx);
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}
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static const NVPTXFloatMCExpr *createConstantFPSingle(const APFloat &Flt,
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MCContext &Ctx) {
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return create(VK_NVPTX_SINGLE_PREC_FLOAT, Flt, Ctx);
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}
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static const NVPTXFloatMCExpr *createConstantFPDouble(const APFloat &Flt,
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MCContext &Ctx) {
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return create(VK_NVPTX_DOUBLE_PREC_FLOAT, Flt, Ctx);
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}
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/// @}
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/// @name Accessors
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/// @{
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/// getOpcode - Get the kind of this expression.
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VariantKind getKind() const { return Kind; }
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/// getSubExpr - Get the child of this expression.
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APFloat getAPFloat() const { return Flt; }
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/// @}
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void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
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bool evaluateAsRelocatableImpl(MCValue &Res,
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const MCAsmLayout *Layout,
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const MCFixup *Fixup) const override {
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return false;
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}
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void visitUsedExpr(MCStreamer &Streamer) const override {};
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MCFragment *findAssociatedFragment() const override { return nullptr; }
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// There are no TLS NVPTXMCExprs at the moment.
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void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Target;
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}
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};
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/// A wrapper for MCSymbolRefExpr that tells the assembly printer that the
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/// symbol should be enclosed by generic().
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class NVPTXGenericMCSymbolRefExpr : public MCTargetExpr {
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private:
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const MCSymbolRefExpr *SymExpr;
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explicit NVPTXGenericMCSymbolRefExpr(const MCSymbolRefExpr *_SymExpr)
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: SymExpr(_SymExpr) {}
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public:
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/// @name Construction
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/// @{
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static const NVPTXGenericMCSymbolRefExpr
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*create(const MCSymbolRefExpr *SymExpr, MCContext &Ctx);
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/// @}
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/// @name Accessors
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/// @{
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/// getOpcode - Get the kind of this expression.
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const MCSymbolRefExpr *getSymbolExpr() const { return SymExpr; }
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/// @}
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void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
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bool evaluateAsRelocatableImpl(MCValue &Res,
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const MCAsmLayout *Layout,
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const MCFixup *Fixup) const override {
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return false;
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}
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void visitUsedExpr(MCStreamer &Streamer) const override {};
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MCFragment *findAssociatedFragment() const override { return nullptr; }
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// There are no TLS NVPTXMCExprs at the moment.
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void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Target;
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}
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};
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} // end namespace llvm
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#endif
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