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https://github.com/c64scene-ar/llvm-6502.git
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7521964d28
This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237936 91177308-0d34-0410-b5e6-96231b3b80d8
125 lines
3.5 KiB
C++
125 lines
3.5 KiB
C++
//===-- NVPTXMCExpr.h - NVPTX specific MC expression classes ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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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_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(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, APFloat Flt,
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MCContext &Ctx);
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static const NVPTXFloatMCExpr *CreateConstantFPSingle(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(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 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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MCSection *FindAssociatedSection() 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 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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MCSection *FindAssociatedSection() 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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