Coverage Report

Created: 2018-09-23 16:00

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/include/llvm/MC/MCSectionWasm.h
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//===- MCSectionWasm.h - Wasm Machine Code Sections -------------*- 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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//
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// This file declares the MCSectionWasm class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCSECTIONWASM_H
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#define LLVM_MC_MCSECTIONWASM_H
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#include "llvm/ADT/Twine.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/MC/MCSymbolWasm.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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class MCSymbol;
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/// This represents a section on wasm.
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class MCSectionWasm final : public MCSection {
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  /// This is the name of the section.  The referenced memory is owned by
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  /// TargetLoweringObjectFileWasm's WasmUniqueMap.
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  StringRef SectionName;
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  unsigned UniqueID;
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  const MCSymbolWasm *Group;
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  // The offset of the MC function/data section in the wasm code/data section.
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  // For data relocations the offset is relative to start of the data payload
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  // itself and does not include the size of the section header.
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  uint64_t SectionOffset = 0;
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  // For data sections, this is the index of of the corresponding wasm data
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  // segment
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  uint32_t SegmentIndex = 0;
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  friend class MCContext;
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  MCSectionWasm(StringRef Section, SectionKind K, const MCSymbolWasm *group,
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                unsigned UniqueID, MCSymbol *Begin)
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      : MCSection(SV_Wasm, K, Begin), SectionName(Section), UniqueID(UniqueID),
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        Group(group) {}
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  void setSectionName(StringRef Name) { SectionName = Name; }
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public:
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  ~MCSectionWasm();
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  /// Decides whether a '.section' directive should be printed before the
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  /// section name
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  bool ShouldOmitSectionDirective(StringRef Name, const MCAsmInfo &MAI) const;
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  StringRef getSectionName() const { return SectionName; }
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  const MCSymbolWasm *getGroup() const { return Group; }
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  void PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
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                            raw_ostream &OS,
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                            const MCExpr *Subsection) const override;
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  bool UseCodeAlign() const override;
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  bool isVirtualSection() const override;
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  bool isWasmData() const {
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    return Kind.isGlobalWriteableData() || Kind.isReadOnly();
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  }
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  bool isUnique() const { return UniqueID != ~0U; }
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  unsigned getUniqueID() const { return UniqueID; }
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  uint64_t getSectionOffset() const { return SectionOffset; }
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  void setSectionOffset(uint64_t Offset) { SectionOffset = Offset; }
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  uint32_t getSegmentIndex() const { return SegmentIndex; }
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  void setSegmentIndex(uint32_t Index) { SegmentIndex = Index; }
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  static bool classof(const MCSection *S) { return S->getVariant() == SV_Wasm; }
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};
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} // end namespace llvm
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#endif