Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/lib/Object/RecordStreamer.h

@@ -1,75 +0,0 @@
-//===- RecordStreamer.h - Record asm defined and used symbols ---*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_OBJECT_RECORDSTREAMER_H
-#define LLVM_LIB_OBJECT_RECORDSTREAMER_H
-
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/MC/MCDirectives.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/SMLoc.h"
-#include <vector>
-
-namespace llvm {
-
-class RecordStreamer : public MCStreamer {
-public:
-  enum State { NeverSeen, Global, Defined, DefinedGlobal, DefinedWeak, Used,
-               UndefinedWeak};
-
-private:
-  StringMap<State> Symbols;
-  // Map of aliases created by .symver directives, saved so we can update
-  // their symbol binding after parsing complete. This maps from each
-  // aliasee to its list of aliases.
-  DenseMap<const MCSymbol *, std::vector<MCSymbol *>> SymverAliasMap;
-
-  void markDefined(const MCSymbol &Symbol);
-  void markGlobal(const MCSymbol &Symbol, MCSymbolAttr Attribute);
-  void markUsed(const MCSymbol &Symbol);
-  void visitUsedSymbol(const MCSymbol &Sym) override;
-
-public:
-  RecordStreamer(MCContext &Context);
-
-  using const_iterator = StringMap<State>::const_iterator;
-
-  const_iterator begin();
-  const_iterator end();
-  void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI,
-                       bool) override;
-  void EmitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
-  void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override;
-  bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
-  void EmitZerofill(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
-                    unsigned ByteAlignment) override;
-  void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
-                        unsigned ByteAlignment) override;
-  /// Record .symver aliases for later processing.
-  void emitELFSymverDirective(MCSymbol *Alias,
-                              const MCSymbol *Aliasee) override;
-  /// Return the map of .symver aliasee to associated aliases.
-  DenseMap<const MCSymbol *, std::vector<MCSymbol *>> &symverAliases() {
-    return SymverAliasMap;
-  }
-
-  /// Get the state recorded for the given symbol.
-  State getSymbolState(const MCSymbol *Sym) {
-    auto SI = Symbols.find(Sym->getName());
-    if (SI == Symbols.end())
-      return NeverSeen;
-    return SI->second;
-  }
-};
-
-} // end namespace llvm
-
-#endif // LLVM_LIB_OBJECT_RECORDSTREAMER_H