Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 71 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/DebugInfo/PDB/Native/PDBStringTableBuilder.h b/clang-r353983/include/llvm/DebugInfo/PDB/Native/PDBStringTableBuilder.h
new file mode 100644
index 00000000..57267ef5
--- /dev/null
+++ b/clang-r353983/include/llvm/DebugInfo/PDB/Native/PDBStringTableBuilder.h
@@ -0,0 +1,71 @@
+//===- PDBStringTableBuilder.h - PDB String Table Builder -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file creates the "/names" stream.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_PDB_RAW_PDBSTRINGTABLEBUILDER_H
+#define LLVM_DEBUGINFO_PDB_RAW_PDBSTRINGTABLEBUILDER_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
+#include "llvm/Support/Error.h"
+#include <vector>
+
+namespace llvm {
+class BinaryStreamWriter;
+class WritableBinaryStreamRef;
+
+namespace msf {
+struct MSFLayout;
+}
+
+namespace pdb {
+
+class PDBFileBuilder;
+class PDBStringTableBuilder;
+
+struct StringTableHashTraits {
+  PDBStringTableBuilder *Table;
+
+  explicit StringTableHashTraits(PDBStringTableBuilder &Table);
+  uint32_t hashLookupKey(StringRef S) const;
+  StringRef storageKeyToLookupKey(uint32_t Offset) const;
+  uint32_t lookupKeyToStorageKey(StringRef S);
+};
+
+class PDBStringTableBuilder {
+public:
+  // If string S does not exist in the string table, insert it.
+  // Returns the ID for S.
+  uint32_t insert(StringRef S);
+
+  uint32_t getIdForString(StringRef S) const;
+  StringRef getStringForId(uint32_t Id) const;
+
+  uint32_t calculateSerializedSize() const;
+  Error commit(BinaryStreamWriter &Writer) const;
+
+  void setStrings(const codeview::DebugStringTableSubsection &Strings);
+
+private:
+  uint32_t calculateHashTableSize() const;
+  Error writeHeader(BinaryStreamWriter &Writer) const;
+  Error writeStrings(BinaryStreamWriter &Writer) const;
+  Error writeHashTable(BinaryStreamWriter &Writer) const;
+  Error writeEpilogue(BinaryStreamWriter &Writer) const;
+
+  codeview::DebugStringTableSubsection Strings;
+};
+
+} // end namespace pdb
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_PDB_RAW_PDBSTRINGTABLEBUILDER_H