Imported Upstream version 5.18.0.225

Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5

external/llvm/lib/CodeGen/AsmPrinter/DwarfStringPool.h

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+//===- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework ---*- 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_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
+#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
+
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/CodeGen/DwarfStringPoolEntry.h"
+#include "llvm/Support/Allocator.h"
+
+namespace llvm {
+
+class AsmPrinter;
+class MCSection;
+
+// Collection of strings for this unit and assorted symbols.
+// A String->Symbol mapping of strings used by indirect
+// references.
+class DwarfStringPool {
+  using EntryTy = DwarfStringPoolEntry;
+
+  StringMap<EntryTy, BumpPtrAllocator &> Pool;
+  StringRef Prefix;
+  unsigned NumBytes = 0;
+  bool ShouldCreateSymbols;
+
+public:
+  using EntryRef = DwarfStringPoolEntryRef;
+
+  DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix);
+
+  void emit(AsmPrinter &Asm, MCSection *StrSection,
+            MCSection *OffsetSection = nullptr);
+
+  bool empty() const { return Pool.empty(); }
+
+  /// Get a reference to an entry in the string pool.
+  EntryRef getEntry(AsmPrinter &Asm, StringRef Str);
+};
+
+} // end namespace llvm
+
+#endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H