Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/include/llvm/Remarks/BitstreamRemarkParser.h b/linux-x64/clang/include/llvm/Remarks/BitstreamRemarkParser.h
new file mode 100644
index 0000000..f7553ba
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Remarks/BitstreamRemarkParser.h
@@ -0,0 +1,116 @@
+//===-- BitstreamRemarkParser.h - Bitstream parser --------------*- 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 provides an implementation of the remark parser using the LLVM
+// Bitstream format.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_REMARKS_BITSTREAM_REMARK_PARSER_H
+#define LLVM_REMARKS_BITSTREAM_REMARK_PARSER_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Bitstream/BitstreamReader.h"
+#include "llvm/Support/Error.h"
+#include <array>
+#include <cstdint>
+
+namespace llvm {
+namespace remarks {
+
+/// Helper to parse a META_BLOCK for a bitstream remark container.
+struct BitstreamMetaParserHelper {
+ /// The Bitstream reader.
+ BitstreamCursor &Stream;
+ /// Reference to the storage for the block info.
+ BitstreamBlockInfo &BlockInfo;
+ /// The parsed content: depending on the container type, some fields might be
+ /// empty.
+ Optional<uint64_t> ContainerVersion;
+ Optional<uint8_t> ContainerType;
+ Optional<StringRef> StrTabBuf;
+ Optional<StringRef> ExternalFilePath;
+ Optional<uint64_t> RemarkVersion;
+
+ /// Continue parsing with \p Stream. \p Stream is expected to contain a
+ /// ENTER_SUBBLOCK to the META_BLOCK at the current position.
+ /// \p Stream is expected to have a BLOCKINFO_BLOCK set.
+ BitstreamMetaParserHelper(BitstreamCursor &Stream,
+ BitstreamBlockInfo &BlockInfo);
+
+ /// Parse the META_BLOCK and fill the available entries.
+ /// This helper does not check for the validity of the fields.
+ Error parse();
+};
+
+/// Helper to parse a REMARK_BLOCK for a bitstream remark container.
+struct BitstreamRemarkParserHelper {
+ /// The Bitstream reader.
+ BitstreamCursor &Stream;
+ /// The parsed content: depending on the remark, some fields might be empty.
+ Optional<uint8_t> Type;
+ Optional<uint64_t> RemarkNameIdx;
+ Optional<uint64_t> PassNameIdx;
+ Optional<uint64_t> FunctionNameIdx;
+ Optional<uint64_t> SourceFileNameIdx;
+ Optional<uint32_t> SourceLine;
+ Optional<uint32_t> SourceColumn;
+ Optional<uint64_t> Hotness;
+ struct Argument {
+ Optional<uint64_t> KeyIdx;
+ Optional<uint64_t> ValueIdx;
+ Optional<uint64_t> SourceFileNameIdx;
+ Optional<uint32_t> SourceLine;
+ Optional<uint32_t> SourceColumn;
+ };
+ Optional<ArrayRef<Argument>> Args;
+ /// Avoid re-allocating a vector every time.
+ SmallVector<Argument, 8> TmpArgs;
+
+ /// Continue parsing with \p Stream. \p Stream is expected to contain a
+ /// ENTER_SUBBLOCK to the REMARK_BLOCK at the current position.
+ /// \p Stream is expected to have a BLOCKINFO_BLOCK set and to have already
+ /// parsed the META_BLOCK.
+ BitstreamRemarkParserHelper(BitstreamCursor &Stream);
+
+ /// Parse the REMARK_BLOCK and fill the available entries.
+ /// This helper does not check for the validity of the fields.
+ Error parse();
+};
+
+/// Helper to parse any bitstream remark container.
+struct BitstreamParserHelper {
+ /// The Bitstream reader.
+ BitstreamCursor Stream;
+ /// The block info block.
+ BitstreamBlockInfo BlockInfo;
+ /// Start parsing at \p Buffer.
+ BitstreamParserHelper(StringRef Buffer);
+ /// Parse the magic number.
+ Expected<std::array<char, 4>> parseMagic();
+ /// Parse the block info block containing all the abbrevs.
+ /// This needs to be called before calling any other parsing function.
+ Error parseBlockInfoBlock();
+ /// Return true if the next block is a META_BLOCK. This function does not move
+ /// the cursor.
+ Expected<bool> isMetaBlock();
+ /// Return true if the next block is a REMARK_BLOCK. This function does not
+ /// move the cursor.
+ Expected<bool> isRemarkBlock();
+ /// Return true if the parser reached the end of the stream.
+ bool atEndOfStream() { return Stream.AtEndOfStream(); }
+ /// Jump to the end of the stream, skipping everything.
+ void skipToEnd() { return Stream.skipToEnd(); }
+};
+
+} // end namespace remarks
+} // end namespace llvm
+
+#endif /* LLVM_REMARKS_BITSTREAM_REMARK_PARSER_H */