6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
//===- llvm/Bitcode/BitcodeAnalyzer.h - Bitcode analyzer --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This header defines interfaces to analyze LLVM bitcode files/streams.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_BITCODE_BITCODEANALYZER_H
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#define LLVM_BITCODE_BITCODEANALYZER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Bitstream/BitstreamReader.h"
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#include "llvm/Support/Error.h"
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#include <map>
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#include <optional>
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#include <vector>
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namespace llvm {
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class raw_ostream;
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/// CurStreamTypeType - A type for CurStreamType
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enum CurStreamTypeType {
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UnknownBitstream,
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LLVMIRBitstream,
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ClangSerializedASTBitstream,
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ClangSerializedDiagnosticsBitstream,
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LLVMBitstreamRemarks
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};
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struct BCDumpOptions {
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/// The stream.
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raw_ostream &OS;
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/// Print per-code histogram.
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bool Histogram = false;
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/// Don't emit numeric info in dump if symbolic info is available.
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bool Symbolic = false;
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/// Print binary blobs using hex escapes.
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bool ShowBinaryBlobs = false;
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/// Print BLOCKINFO block details.
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bool DumpBlockinfo = false;
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BCDumpOptions(raw_ostream &OS) : OS(OS) {}
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};
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class BitcodeAnalyzer {
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BitstreamCursor Stream;
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BitstreamBlockInfo BlockInfo;
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CurStreamTypeType CurStreamType;
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std::optional<BitstreamCursor> BlockInfoStream;
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unsigned NumTopBlocks = 0;
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struct PerRecordStats {
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unsigned NumInstances = 0;
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unsigned NumAbbrev = 0;
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uint64_t TotalBits = 0;
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PerRecordStats() = default;
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};
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struct PerBlockIDStats {
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/// NumInstances - This the number of times this block ID has been seen.
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unsigned NumInstances = 0;
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/// NumBits - The total size in bits of all of these blocks.
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uint64_t NumBits = 0;
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/// NumSubBlocks - The total number of blocks these blocks contain.
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unsigned NumSubBlocks = 0;
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/// NumAbbrevs - The total number of abbreviations.
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unsigned NumAbbrevs = 0;
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/// NumRecords - The total number of records these blocks contain, and the
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/// number that are abbreviated.
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unsigned NumRecords = 0, NumAbbreviatedRecords = 0;
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/// CodeFreq - Keep track of the number of times we see each code.
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std::vector<PerRecordStats> CodeFreq;
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PerBlockIDStats() = default;
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};
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std::map<unsigned, PerBlockIDStats> BlockIDStats;
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public:
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BitcodeAnalyzer(StringRef Buffer,
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std::optional<StringRef> BlockInfoBuffer = std::nullopt);
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/// Analyze the bitcode file.
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Error analyze(std::optional<BCDumpOptions> O = std::nullopt,
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std::optional<StringRef> CheckHash = std::nullopt);
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/// Print stats about the bitcode file.
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void printStats(BCDumpOptions O,
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std::optional<StringRef> Filename = std::nullopt);
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private:
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/// Read a block, updating statistics, etc.
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Error parseBlock(unsigned BlockID, unsigned IndentLevel,
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std::optional<BCDumpOptions> O = std::nullopt,
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std::optional<StringRef> CheckHash = std::nullopt);
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Error decodeMetadataStringsBlob(StringRef Indent, ArrayRef<uint64_t> Record,
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StringRef Blob, raw_ostream &OS);
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};
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} // end namespace llvm
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#endif // LLVM_BITCODE_BITCODEANALYZER_H
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