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

1 files changed, 94 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/DebugInfo/CodeView/DebugCrossImpSubsection.h b/clang-r353983/include/llvm/DebugInfo/CodeView/DebugCrossImpSubsection.h
new file mode 100644
index 00000000..e7683cb2
--- /dev/null
+++ b/clang-r353983/include/llvm/DebugInfo/CodeView/DebugCrossImpSubsection.h
@@ -0,0 +1,94 @@
+//===- DebugCrossImpSubsection.h --------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSIMPSUBSECTION_H
+#define LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSIMPSUBSECTION_H
+
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/DebugInfo/CodeView/DebugSubsection.h"
+#include "llvm/Support/BinaryStreamArray.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+#include <cstdint>
+#include <vector>
+
+namespace llvm {
+
+namespace codeview {
+
+struct CrossModuleImportItem {
+  const CrossModuleImport *Header = nullptr;
+  FixedStreamArray<support::ulittle32_t> Imports;
+};
+
+} // end namespace codeview
+
+template <> struct VarStreamArrayExtractor<codeview::CrossModuleImportItem> {
+public:
+  using ContextType = void;
+
+  Error operator()(BinaryStreamRef Stream, uint32_t &Len,
+                   codeview::CrossModuleImportItem &Item);
+};
+
+namespace codeview {
+
+class DebugStringTableSubsection;
+
+class DebugCrossModuleImportsSubsectionRef final : public DebugSubsectionRef {
+  using ReferenceArray = VarStreamArray<CrossModuleImportItem>;
+  using Iterator = ReferenceArray::Iterator;
+
+public:
+  DebugCrossModuleImportsSubsectionRef()
+      : DebugSubsectionRef(DebugSubsectionKind::CrossScopeImports) {}
+
+  static bool classof(const DebugSubsectionRef *S) {
+    return S->kind() == DebugSubsectionKind::CrossScopeImports;
+  }
+
+  Error initialize(BinaryStreamReader Reader);
+  Error initialize(BinaryStreamRef Stream);
+
+  Iterator begin() const { return References.begin(); }
+  Iterator end() const { return References.end(); }
+
+private:
+  ReferenceArray References;
+};
+
+class DebugCrossModuleImportsSubsection final : public DebugSubsection {
+public:
+  explicit DebugCrossModuleImportsSubsection(
+      DebugStringTableSubsection &Strings)
+      : DebugSubsection(DebugSubsectionKind::CrossScopeImports),
+        Strings(Strings) {}
+
+  static bool classof(const DebugSubsection *S) {
+    return S->kind() == DebugSubsectionKind::CrossScopeImports;
+  }
+
+  void addImport(StringRef Module, uint32_t ImportId);
+
+  uint32_t calculateSerializedSize() const override;
+  Error commit(BinaryStreamWriter &Writer) const override;
+
+private:
+  DebugStringTableSubsection &Strings;
+  StringMap<std::vector<support::ulittle32_t>> Mappings;
+};
+
+} // end namespace codeview
+
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGCROSSIMPSUBSECTION_H