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[llvm-bcanalyzer] Refactor and move to libLLVMBitReader
This allows us to use the analyzer from unit tests. * Refactor the interface to use proper error handling for most functions after JF's work. * Move everything into a BitstreamAnalyzer class. * Move that to Bitcode/BitcodeAnalyzer.h. Differential Revision: https://reviews.llvm.org/D64116 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365286 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Francis Visoiu Mistrih
parent
0b6809a0da
commit
767b1fe69e
103
include/llvm/Bitcode/BitcodeAnalyzer.h
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103
include/llvm/Bitcode/BitcodeAnalyzer.h
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@ -0,0 +1,103 @@
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//===- 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_BITCODE_ANALYZER_H
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#define LLVM_BITCODE_BITCODE_ANALYZER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/Optional.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 "llvm/Support/raw_ostream.h"
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#include <map>
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#include <vector>
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namespace llvm {
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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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};
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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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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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Optional<BitstreamCursor> BlockInfoStream;
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unsigned NumTopBlocks = 0;
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struct PerRecordStats {
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unsigned NumInstances;
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unsigned NumAbbrev;
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uint64_t TotalBits;
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PerRecordStats() : NumInstances(0), NumAbbrev(0), TotalBits(0) {}
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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;
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/// NumBits - The total size in bits of all of these blocks.
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uint64_t NumBits;
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/// NumSubBlocks - The total number of blocks these blocks contain.
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unsigned NumSubBlocks;
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/// NumAbbrevs - The total number of abbreviations.
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unsigned NumAbbrevs;
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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, NumAbbreviatedRecords;
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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()
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: NumInstances(0), NumBits(0), NumSubBlocks(0), NumAbbrevs(0),
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NumRecords(0), NumAbbreviatedRecords(0) {}
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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, Optional<StringRef> BlockInfoBuffer = None);
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/// Analyze the bitcode file.
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Error analyze(Optional<BCDumpOptions> O = None,
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Optional<StringRef> CheckHash = None);
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/// Print stats about the bitcode file.
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void printStats(BCDumpOptions O, Optional<StringRef> Filename = None);
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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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Optional<BCDumpOptions> O = None,
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Optional<StringRef> CheckHash = None);
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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_BITCODE_ANALYZER_H
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977
lib/Bitcode/Reader/BitcodeAnalyzer.cpp
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977
lib/Bitcode/Reader/BitcodeAnalyzer.cpp
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//===- BitcodeAnalyzer.cpp - Internal BitcodeAnalyzer implementation ------===//
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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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#include "llvm/Bitcode/BitcodeAnalyzer.h"
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#include "llvm/Bitcode/BitcodeReader.h"
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#include "llvm/Bitcode/LLVMBitCodes.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/SHA1.h"
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using namespace llvm;
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static Error reportError(StringRef Message) {
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return createStringError(std::errc::illegal_byte_sequence, Message.data());
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}
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/// Return a symbolic block name if known, otherwise return null.
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static Optional<const char *> GetBlockName(unsigned BlockID,
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const BitstreamBlockInfo &BlockInfo,
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CurStreamTypeType CurStreamType) {
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// Standard blocks for all bitcode files.
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if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
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if (BlockID == bitc::BLOCKINFO_BLOCK_ID)
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return "BLOCKINFO_BLOCK";
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return None;
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}
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// Check to see if we have a blockinfo record for this block, with a name.
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if (const BitstreamBlockInfo::BlockInfo *Info =
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BlockInfo.getBlockInfo(BlockID)) {
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if (!Info->Name.empty())
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return Info->Name.c_str();
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}
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if (CurStreamType != LLVMIRBitstream)
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return None;
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switch (BlockID) {
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default:
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return None;
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case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID:
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return "OPERAND_BUNDLE_TAGS_BLOCK";
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case bitc::MODULE_BLOCK_ID:
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return "MODULE_BLOCK";
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case bitc::PARAMATTR_BLOCK_ID:
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return "PARAMATTR_BLOCK";
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case bitc::PARAMATTR_GROUP_BLOCK_ID:
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return "PARAMATTR_GROUP_BLOCK_ID";
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case bitc::TYPE_BLOCK_ID_NEW:
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return "TYPE_BLOCK_ID";
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case bitc::CONSTANTS_BLOCK_ID:
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return "CONSTANTS_BLOCK";
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case bitc::FUNCTION_BLOCK_ID:
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return "FUNCTION_BLOCK";
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case bitc::IDENTIFICATION_BLOCK_ID:
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return "IDENTIFICATION_BLOCK_ID";
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case bitc::VALUE_SYMTAB_BLOCK_ID:
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return "VALUE_SYMTAB";
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case bitc::METADATA_BLOCK_ID:
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return "METADATA_BLOCK";
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case bitc::METADATA_KIND_BLOCK_ID:
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return "METADATA_KIND_BLOCK";
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case bitc::METADATA_ATTACHMENT_ID:
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return "METADATA_ATTACHMENT_BLOCK";
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case bitc::USELIST_BLOCK_ID:
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return "USELIST_BLOCK_ID";
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case bitc::GLOBALVAL_SUMMARY_BLOCK_ID:
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return "GLOBALVAL_SUMMARY_BLOCK";
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case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID:
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return "FULL_LTO_GLOBALVAL_SUMMARY_BLOCK";
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case bitc::MODULE_STRTAB_BLOCK_ID:
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return "MODULE_STRTAB_BLOCK";
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case bitc::STRTAB_BLOCK_ID:
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return "STRTAB_BLOCK";
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case bitc::SYMTAB_BLOCK_ID:
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return "SYMTAB_BLOCK";
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}
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}
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/// Return a symbolic code name if known, otherwise return null.
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static Optional<const char *> GetCodeName(unsigned CodeID, unsigned BlockID,
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const BitstreamBlockInfo &BlockInfo,
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CurStreamTypeType CurStreamType) {
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// Standard blocks for all bitcode files.
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if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
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if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
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switch (CodeID) {
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default:
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return None;
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case bitc::BLOCKINFO_CODE_SETBID:
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return "SETBID";
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case bitc::BLOCKINFO_CODE_BLOCKNAME:
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return "BLOCKNAME";
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case bitc::BLOCKINFO_CODE_SETRECORDNAME:
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return "SETRECORDNAME";
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}
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}
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return None;
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}
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// Check to see if we have a blockinfo record for this record, with a name.
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if (const BitstreamBlockInfo::BlockInfo *Info =
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BlockInfo.getBlockInfo(BlockID)) {
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for (unsigned i = 0, e = Info->RecordNames.size(); i != e; ++i)
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if (Info->RecordNames[i].first == CodeID)
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return Info->RecordNames[i].second.c_str();
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}
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if (CurStreamType != LLVMIRBitstream)
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return None;
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#define STRINGIFY_CODE(PREFIX, CODE) \
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case bitc::PREFIX##_##CODE: \
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return #CODE;
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switch (BlockID) {
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default:
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return None;
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case bitc::MODULE_BLOCK_ID:
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switch (CodeID) {
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default:
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return None;
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STRINGIFY_CODE(MODULE_CODE, VERSION)
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STRINGIFY_CODE(MODULE_CODE, TRIPLE)
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STRINGIFY_CODE(MODULE_CODE, DATALAYOUT)
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STRINGIFY_CODE(MODULE_CODE, ASM)
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STRINGIFY_CODE(MODULE_CODE, SECTIONNAME)
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STRINGIFY_CODE(MODULE_CODE, DEPLIB) // FIXME: Remove in 4.0
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STRINGIFY_CODE(MODULE_CODE, GLOBALVAR)
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STRINGIFY_CODE(MODULE_CODE, FUNCTION)
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STRINGIFY_CODE(MODULE_CODE, ALIAS)
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STRINGIFY_CODE(MODULE_CODE, GCNAME)
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STRINGIFY_CODE(MODULE_CODE, VSTOFFSET)
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STRINGIFY_CODE(MODULE_CODE, METADATA_VALUES_UNUSED)
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STRINGIFY_CODE(MODULE_CODE, SOURCE_FILENAME)
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STRINGIFY_CODE(MODULE_CODE, HASH)
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}
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case bitc::IDENTIFICATION_BLOCK_ID:
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switch (CodeID) {
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default:
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return None;
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STRINGIFY_CODE(IDENTIFICATION_CODE, STRING)
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STRINGIFY_CODE(IDENTIFICATION_CODE, EPOCH)
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}
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case bitc::PARAMATTR_BLOCK_ID:
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switch (CodeID) {
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default:
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return None;
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// FIXME: Should these be different?
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case bitc::PARAMATTR_CODE_ENTRY_OLD:
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return "ENTRY";
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case bitc::PARAMATTR_CODE_ENTRY:
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return "ENTRY";
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}
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case bitc::PARAMATTR_GROUP_BLOCK_ID:
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switch (CodeID) {
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default:
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return None;
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case bitc::PARAMATTR_GRP_CODE_ENTRY:
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return "ENTRY";
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}
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case bitc::TYPE_BLOCK_ID_NEW:
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switch (CodeID) {
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default:
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return None;
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STRINGIFY_CODE(TYPE_CODE, NUMENTRY)
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STRINGIFY_CODE(TYPE_CODE, VOID)
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STRINGIFY_CODE(TYPE_CODE, FLOAT)
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STRINGIFY_CODE(TYPE_CODE, DOUBLE)
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STRINGIFY_CODE(TYPE_CODE, LABEL)
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STRINGIFY_CODE(TYPE_CODE, OPAQUE)
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STRINGIFY_CODE(TYPE_CODE, INTEGER)
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STRINGIFY_CODE(TYPE_CODE, POINTER)
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STRINGIFY_CODE(TYPE_CODE, ARRAY)
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STRINGIFY_CODE(TYPE_CODE, VECTOR)
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STRINGIFY_CODE(TYPE_CODE, X86_FP80)
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STRINGIFY_CODE(TYPE_CODE, FP128)
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STRINGIFY_CODE(TYPE_CODE, PPC_FP128)
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STRINGIFY_CODE(TYPE_CODE, METADATA)
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STRINGIFY_CODE(TYPE_CODE, STRUCT_ANON)
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STRINGIFY_CODE(TYPE_CODE, STRUCT_NAME)
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STRINGIFY_CODE(TYPE_CODE, STRUCT_NAMED)
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STRINGIFY_CODE(TYPE_CODE, FUNCTION)
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}
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case bitc::CONSTANTS_BLOCK_ID:
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switch (CodeID) {
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default:
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return None;
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STRINGIFY_CODE(CST_CODE, SETTYPE)
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STRINGIFY_CODE(CST_CODE, NULL)
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STRINGIFY_CODE(CST_CODE, UNDEF)
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STRINGIFY_CODE(CST_CODE, INTEGER)
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STRINGIFY_CODE(CST_CODE, WIDE_INTEGER)
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STRINGIFY_CODE(CST_CODE, FLOAT)
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STRINGIFY_CODE(CST_CODE, AGGREGATE)
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STRINGIFY_CODE(CST_CODE, STRING)
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STRINGIFY_CODE(CST_CODE, CSTRING)
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STRINGIFY_CODE(CST_CODE, CE_BINOP)
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STRINGIFY_CODE(CST_CODE, CE_CAST)
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STRINGIFY_CODE(CST_CODE, CE_GEP)
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STRINGIFY_CODE(CST_CODE, CE_INBOUNDS_GEP)
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STRINGIFY_CODE(CST_CODE, CE_SELECT)
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STRINGIFY_CODE(CST_CODE, CE_EXTRACTELT)
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STRINGIFY_CODE(CST_CODE, CE_INSERTELT)
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STRINGIFY_CODE(CST_CODE, CE_SHUFFLEVEC)
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STRINGIFY_CODE(CST_CODE, CE_CMP)
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STRINGIFY_CODE(CST_CODE, INLINEASM)
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STRINGIFY_CODE(CST_CODE, CE_SHUFVEC_EX)
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STRINGIFY_CODE(CST_CODE, CE_UNOP)
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case bitc::CST_CODE_BLOCKADDRESS:
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return "CST_CODE_BLOCKADDRESS";
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STRINGIFY_CODE(CST_CODE, DATA)
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}
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case bitc::FUNCTION_BLOCK_ID:
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switch (CodeID) {
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default:
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return None;
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STRINGIFY_CODE(FUNC_CODE, DECLAREBLOCKS)
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STRINGIFY_CODE(FUNC_CODE, INST_BINOP)
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STRINGIFY_CODE(FUNC_CODE, INST_CAST)
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STRINGIFY_CODE(FUNC_CODE, INST_GEP_OLD)
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STRINGIFY_CODE(FUNC_CODE, INST_INBOUNDS_GEP_OLD)
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STRINGIFY_CODE(FUNC_CODE, INST_SELECT)
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STRINGIFY_CODE(FUNC_CODE, INST_EXTRACTELT)
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STRINGIFY_CODE(FUNC_CODE, INST_INSERTELT)
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STRINGIFY_CODE(FUNC_CODE, INST_SHUFFLEVEC)
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STRINGIFY_CODE(FUNC_CODE, INST_CMP)
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STRINGIFY_CODE(FUNC_CODE, INST_RET)
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STRINGIFY_CODE(FUNC_CODE, INST_BR)
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STRINGIFY_CODE(FUNC_CODE, INST_SWITCH)
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STRINGIFY_CODE(FUNC_CODE, INST_INVOKE)
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STRINGIFY_CODE(FUNC_CODE, INST_UNOP)
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STRINGIFY_CODE(FUNC_CODE, INST_UNREACHABLE)
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STRINGIFY_CODE(FUNC_CODE, INST_CLEANUPRET)
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STRINGIFY_CODE(FUNC_CODE, INST_CATCHRET)
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STRINGIFY_CODE(FUNC_CODE, INST_CATCHPAD)
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STRINGIFY_CODE(FUNC_CODE, INST_PHI)
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STRINGIFY_CODE(FUNC_CODE, INST_ALLOCA)
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STRINGIFY_CODE(FUNC_CODE, INST_LOAD)
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STRINGIFY_CODE(FUNC_CODE, INST_VAARG)
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STRINGIFY_CODE(FUNC_CODE, INST_STORE)
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||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_EXTRACTVAL)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_INSERTVAL)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_CMP2)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_VSELECT)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, DEBUG_LOC_AGAIN)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_CALL)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, DEBUG_LOC)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_GEP)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, OPERAND_BUNDLE)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_FENCE)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_ATOMICRMW)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_LOADATOMIC)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_STOREATOMIC)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_CMPXCHG)
|
||||||
|
STRINGIFY_CODE(FUNC_CODE, INST_CALLBR)
|
||||||
|
}
|
||||||
|
case bitc::VALUE_SYMTAB_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
STRINGIFY_CODE(VST_CODE, ENTRY)
|
||||||
|
STRINGIFY_CODE(VST_CODE, BBENTRY)
|
||||||
|
STRINGIFY_CODE(VST_CODE, FNENTRY)
|
||||||
|
STRINGIFY_CODE(VST_CODE, COMBINED_ENTRY)
|
||||||
|
}
|
||||||
|
case bitc::MODULE_STRTAB_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
STRINGIFY_CODE(MST_CODE, ENTRY)
|
||||||
|
STRINGIFY_CODE(MST_CODE, HASH)
|
||||||
|
}
|
||||||
|
case bitc::GLOBALVAL_SUMMARY_BLOCK_ID:
|
||||||
|
case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
STRINGIFY_CODE(FS, PERMODULE)
|
||||||
|
STRINGIFY_CODE(FS, PERMODULE_PROFILE)
|
||||||
|
STRINGIFY_CODE(FS, PERMODULE_RELBF)
|
||||||
|
STRINGIFY_CODE(FS, PERMODULE_GLOBALVAR_INIT_REFS)
|
||||||
|
STRINGIFY_CODE(FS, PERMODULE_VTABLE_GLOBALVAR_INIT_REFS)
|
||||||
|
STRINGIFY_CODE(FS, COMBINED)
|
||||||
|
STRINGIFY_CODE(FS, COMBINED_PROFILE)
|
||||||
|
STRINGIFY_CODE(FS, COMBINED_GLOBALVAR_INIT_REFS)
|
||||||
|
STRINGIFY_CODE(FS, ALIAS)
|
||||||
|
STRINGIFY_CODE(FS, COMBINED_ALIAS)
|
||||||
|
STRINGIFY_CODE(FS, COMBINED_ORIGINAL_NAME)
|
||||||
|
STRINGIFY_CODE(FS, VERSION)
|
||||||
|
STRINGIFY_CODE(FS, FLAGS)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_TESTS)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_TEST_ASSUME_VCALLS)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_CHECKED_LOAD_VCALLS)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_TEST_ASSUME_CONST_VCALL)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_CHECKED_LOAD_CONST_VCALL)
|
||||||
|
STRINGIFY_CODE(FS, VALUE_GUID)
|
||||||
|
STRINGIFY_CODE(FS, CFI_FUNCTION_DEFS)
|
||||||
|
STRINGIFY_CODE(FS, CFI_FUNCTION_DECLS)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_ID)
|
||||||
|
STRINGIFY_CODE(FS, TYPE_ID_METADATA)
|
||||||
|
}
|
||||||
|
case bitc::METADATA_ATTACHMENT_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
STRINGIFY_CODE(METADATA, ATTACHMENT)
|
||||||
|
}
|
||||||
|
case bitc::METADATA_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
STRINGIFY_CODE(METADATA, STRING_OLD)
|
||||||
|
STRINGIFY_CODE(METADATA, VALUE)
|
||||||
|
STRINGIFY_CODE(METADATA, NODE)
|
||||||
|
STRINGIFY_CODE(METADATA, NAME)
|
||||||
|
STRINGIFY_CODE(METADATA, DISTINCT_NODE)
|
||||||
|
STRINGIFY_CODE(METADATA, KIND) // Older bitcode has it in a MODULE_BLOCK
|
||||||
|
STRINGIFY_CODE(METADATA, LOCATION)
|
||||||
|
STRINGIFY_CODE(METADATA, OLD_NODE)
|
||||||
|
STRINGIFY_CODE(METADATA, OLD_FN_NODE)
|
||||||
|
STRINGIFY_CODE(METADATA, NAMED_NODE)
|
||||||
|
STRINGIFY_CODE(METADATA, GENERIC_DEBUG)
|
||||||
|
STRINGIFY_CODE(METADATA, SUBRANGE)
|
||||||
|
STRINGIFY_CODE(METADATA, ENUMERATOR)
|
||||||
|
STRINGIFY_CODE(METADATA, BASIC_TYPE)
|
||||||
|
STRINGIFY_CODE(METADATA, FILE)
|
||||||
|
STRINGIFY_CODE(METADATA, DERIVED_TYPE)
|
||||||
|
STRINGIFY_CODE(METADATA, COMPOSITE_TYPE)
|
||||||
|
STRINGIFY_CODE(METADATA, SUBROUTINE_TYPE)
|
||||||
|
STRINGIFY_CODE(METADATA, COMPILE_UNIT)
|
||||||
|
STRINGIFY_CODE(METADATA, SUBPROGRAM)
|
||||||
|
STRINGIFY_CODE(METADATA, LEXICAL_BLOCK)
|
||||||
|
STRINGIFY_CODE(METADATA, LEXICAL_BLOCK_FILE)
|
||||||
|
STRINGIFY_CODE(METADATA, NAMESPACE)
|
||||||
|
STRINGIFY_CODE(METADATA, TEMPLATE_TYPE)
|
||||||
|
STRINGIFY_CODE(METADATA, TEMPLATE_VALUE)
|
||||||
|
STRINGIFY_CODE(METADATA, GLOBAL_VAR)
|
||||||
|
STRINGIFY_CODE(METADATA, LOCAL_VAR)
|
||||||
|
STRINGIFY_CODE(METADATA, EXPRESSION)
|
||||||
|
STRINGIFY_CODE(METADATA, OBJC_PROPERTY)
|
||||||
|
STRINGIFY_CODE(METADATA, IMPORTED_ENTITY)
|
||||||
|
STRINGIFY_CODE(METADATA, MODULE)
|
||||||
|
STRINGIFY_CODE(METADATA, MACRO)
|
||||||
|
STRINGIFY_CODE(METADATA, MACRO_FILE)
|
||||||
|
STRINGIFY_CODE(METADATA, STRINGS)
|
||||||
|
STRINGIFY_CODE(METADATA, GLOBAL_DECL_ATTACHMENT)
|
||||||
|
STRINGIFY_CODE(METADATA, GLOBAL_VAR_EXPR)
|
||||||
|
STRINGIFY_CODE(METADATA, INDEX_OFFSET)
|
||||||
|
STRINGIFY_CODE(METADATA, INDEX)
|
||||||
|
}
|
||||||
|
case bitc::METADATA_KIND_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
STRINGIFY_CODE(METADATA, KIND)
|
||||||
|
}
|
||||||
|
case bitc::USELIST_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
case bitc::USELIST_CODE_DEFAULT:
|
||||||
|
return "USELIST_CODE_DEFAULT";
|
||||||
|
case bitc::USELIST_CODE_BB:
|
||||||
|
return "USELIST_CODE_BB";
|
||||||
|
}
|
||||||
|
|
||||||
|
case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
case bitc::OPERAND_BUNDLE_TAG:
|
||||||
|
return "OPERAND_BUNDLE_TAG";
|
||||||
|
}
|
||||||
|
case bitc::STRTAB_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
case bitc::STRTAB_BLOB:
|
||||||
|
return "BLOB";
|
||||||
|
}
|
||||||
|
case bitc::SYMTAB_BLOCK_ID:
|
||||||
|
switch (CodeID) {
|
||||||
|
default:
|
||||||
|
return None;
|
||||||
|
case bitc::SYMTAB_BLOB:
|
||||||
|
return "BLOB";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#undef STRINGIFY_CODE
|
||||||
|
}
|
||||||
|
|
||||||
|
static void printSize(raw_ostream &OS, double Bits) {
|
||||||
|
OS << format("%.2f/%.2fB/%luW", Bits, Bits / 8, (unsigned long)(Bits / 32));
|
||||||
|
}
|
||||||
|
static void printSize(raw_ostream &OS, uint64_t Bits) {
|
||||||
|
OS << format("%lub/%.2fB/%luW", (unsigned long)Bits, (double)Bits / 8,
|
||||||
|
(unsigned long)(Bits / 32));
|
||||||
|
}
|
||||||
|
|
||||||
|
static Expected<CurStreamTypeType> ReadSignature(BitstreamCursor &Stream) {
|
||||||
|
auto tryRead = [&Stream](char &Dest, size_t size) -> Error {
|
||||||
|
if (Expected<SimpleBitstreamCursor::word_t> MaybeWord = Stream.Read(size))
|
||||||
|
Dest = MaybeWord.get();
|
||||||
|
else
|
||||||
|
return MaybeWord.takeError();
|
||||||
|
return Error::success();
|
||||||
|
};
|
||||||
|
|
||||||
|
char Signature[6];
|
||||||
|
if (Error Err = tryRead(Signature[0], 8))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Error Err = tryRead(Signature[1], 8))
|
||||||
|
return std::move(Err);
|
||||||
|
|
||||||
|
// Autodetect the file contents, if it is one we know.
|
||||||
|
if (Signature[0] == 'C' && Signature[1] == 'P') {
|
||||||
|
if (Error Err = tryRead(Signature[2], 8))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Error Err = tryRead(Signature[3], 8))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Signature[2] == 'C' && Signature[3] == 'H')
|
||||||
|
return ClangSerializedASTBitstream;
|
||||||
|
} else if (Signature[0] == 'D' && Signature[1] == 'I') {
|
||||||
|
if (Error Err = tryRead(Signature[2], 8))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Error Err = tryRead(Signature[3], 8))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Signature[2] == 'A' && Signature[3] == 'G')
|
||||||
|
return ClangSerializedDiagnosticsBitstream;
|
||||||
|
} else {
|
||||||
|
if (Error Err = tryRead(Signature[2], 4))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Error Err = tryRead(Signature[3], 4))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Error Err = tryRead(Signature[4], 4))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Error Err = tryRead(Signature[5], 4))
|
||||||
|
return std::move(Err);
|
||||||
|
if (Signature[0] == 'B' && Signature[1] == 'C' && Signature[2] == 0x0 &&
|
||||||
|
Signature[3] == 0xC && Signature[4] == 0xE && Signature[5] == 0xD)
|
||||||
|
return LLVMIRBitstream;
|
||||||
|
}
|
||||||
|
return UnknownBitstream;
|
||||||
|
}
|
||||||
|
|
||||||
|
static Expected<CurStreamTypeType> analyzeHeader(Optional<BCDumpOptions> O,
|
||||||
|
BitstreamCursor &Stream) {
|
||||||
|
ArrayRef<uint8_t> Bytes = Stream.getBitcodeBytes();
|
||||||
|
const unsigned char *BufPtr = (const unsigned char *)Bytes.data();
|
||||||
|
const unsigned char *EndBufPtr = BufPtr + Bytes.size();
|
||||||
|
|
||||||
|
// If we have a wrapper header, parse it and ignore the non-bc file
|
||||||
|
// contents. The magic number is 0x0B17C0DE stored in little endian.
|
||||||
|
if (isBitcodeWrapper(BufPtr, EndBufPtr)) {
|
||||||
|
if (Bytes.size() < BWH_HeaderSize)
|
||||||
|
return reportError("Invalid bitcode wrapper header");
|
||||||
|
|
||||||
|
if (O) {
|
||||||
|
unsigned Magic = support::endian::read32le(&BufPtr[BWH_MagicField]);
|
||||||
|
unsigned Version = support::endian::read32le(&BufPtr[BWH_VersionField]);
|
||||||
|
unsigned Offset = support::endian::read32le(&BufPtr[BWH_OffsetField]);
|
||||||
|
unsigned Size = support::endian::read32le(&BufPtr[BWH_SizeField]);
|
||||||
|
unsigned CPUType = support::endian::read32le(&BufPtr[BWH_CPUTypeField]);
|
||||||
|
|
||||||
|
O->OS << "<BITCODE_WRAPPER_HEADER"
|
||||||
|
<< " Magic=" << format_hex(Magic, 10)
|
||||||
|
<< " Version=" << format_hex(Version, 10)
|
||||||
|
<< " Offset=" << format_hex(Offset, 10)
|
||||||
|
<< " Size=" << format_hex(Size, 10)
|
||||||
|
<< " CPUType=" << format_hex(CPUType, 10) << "/>\n";
|
||||||
|
}
|
||||||
|
|
||||||
|
if (SkipBitcodeWrapperHeader(BufPtr, EndBufPtr, true))
|
||||||
|
return reportError("Invalid bitcode wrapper header");
|
||||||
|
}
|
||||||
|
|
||||||
|
// Use the cursor modified by skipping the wrapper header.
|
||||||
|
Stream = BitstreamCursor(ArrayRef<uint8_t>(BufPtr, EndBufPtr));
|
||||||
|
|
||||||
|
return ReadSignature(Stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool canDecodeBlob(unsigned Code, unsigned BlockID) {
|
||||||
|
return BlockID == bitc::METADATA_BLOCK_ID && Code == bitc::METADATA_STRINGS;
|
||||||
|
}
|
||||||
|
|
||||||
|
Error BitcodeAnalyzer::decodeMetadataStringsBlob(StringRef Indent,
|
||||||
|
ArrayRef<uint64_t> Record,
|
||||||
|
StringRef Blob,
|
||||||
|
raw_ostream &OS) {
|
||||||
|
if (Blob.empty())
|
||||||
|
return reportError("Cannot decode empty blob.");
|
||||||
|
|
||||||
|
if (Record.size() != 2)
|
||||||
|
return reportError(
|
||||||
|
"Decoding metadata strings blob needs two record entries.");
|
||||||
|
|
||||||
|
unsigned NumStrings = Record[0];
|
||||||
|
unsigned StringsOffset = Record[1];
|
||||||
|
OS << " num-strings = " << NumStrings << " {\n";
|
||||||
|
|
||||||
|
StringRef Lengths = Blob.slice(0, StringsOffset);
|
||||||
|
SimpleBitstreamCursor R(Lengths);
|
||||||
|
StringRef Strings = Blob.drop_front(StringsOffset);
|
||||||
|
do {
|
||||||
|
if (R.AtEndOfStream())
|
||||||
|
return reportError("bad length");
|
||||||
|
|
||||||
|
Expected<uint32_t> MaybeSize = R.ReadVBR(6);
|
||||||
|
if (!MaybeSize)
|
||||||
|
return MaybeSize.takeError();
|
||||||
|
uint32_t Size = MaybeSize.get();
|
||||||
|
if (Strings.size() < Size)
|
||||||
|
return reportError("truncated chars");
|
||||||
|
|
||||||
|
OS << Indent << " '";
|
||||||
|
OS.write_escaped(Strings.slice(0, Size), /*hex=*/true);
|
||||||
|
OS << "'\n";
|
||||||
|
Strings = Strings.drop_front(Size);
|
||||||
|
} while (--NumStrings);
|
||||||
|
|
||||||
|
OS << Indent << " }";
|
||||||
|
return Error::success();
|
||||||
|
}
|
||||||
|
|
||||||
|
BitcodeAnalyzer::BitcodeAnalyzer(StringRef Buffer,
|
||||||
|
Optional<StringRef> BlockInfoBuffer)
|
||||||
|
: Stream(Buffer) {
|
||||||
|
if (BlockInfoBuffer)
|
||||||
|
BlockInfoStream.emplace(*BlockInfoBuffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
Error BitcodeAnalyzer::analyze(Optional<BCDumpOptions> O,
|
||||||
|
Optional<StringRef> CheckHash) {
|
||||||
|
if (Expected<CurStreamTypeType> H = analyzeHeader(O, Stream))
|
||||||
|
CurStreamType = *H;
|
||||||
|
|
||||||
|
Stream.setBlockInfo(&BlockInfo);
|
||||||
|
|
||||||
|
// Read block info from BlockInfoStream, if specified.
|
||||||
|
// The block info must be a top-level block.
|
||||||
|
if (BlockInfoStream) {
|
||||||
|
BitstreamCursor BlockInfoCursor(*BlockInfoStream);
|
||||||
|
CurStreamTypeType BlockInfoStreamType;
|
||||||
|
Expected<CurStreamTypeType> H = analyzeHeader(O, BlockInfoCursor);
|
||||||
|
if (!H)
|
||||||
|
return H.takeError();
|
||||||
|
BlockInfoStreamType = *H;
|
||||||
|
|
||||||
|
while (!BlockInfoCursor.AtEndOfStream()) {
|
||||||
|
Expected<unsigned> MaybeCode = BlockInfoCursor.ReadCode();
|
||||||
|
if (!MaybeCode)
|
||||||
|
return MaybeCode.takeError();
|
||||||
|
if (MaybeCode.get() != bitc::ENTER_SUBBLOCK)
|
||||||
|
return reportError("Invalid record at top-level in block info file");
|
||||||
|
|
||||||
|
Expected<unsigned> MaybeBlockID = BlockInfoCursor.ReadSubBlockID();
|
||||||
|
if (!MaybeBlockID)
|
||||||
|
return MaybeBlockID.takeError();
|
||||||
|
if (MaybeBlockID.get() == bitc::BLOCKINFO_BLOCK_ID) {
|
||||||
|
Expected<Optional<BitstreamBlockInfo>> MaybeNewBlockInfo =
|
||||||
|
BlockInfoCursor.ReadBlockInfoBlock(/*ReadBlockInfoNames=*/true);
|
||||||
|
if (!MaybeNewBlockInfo)
|
||||||
|
return MaybeNewBlockInfo.takeError();
|
||||||
|
Optional<BitstreamBlockInfo> NewBlockInfo =
|
||||||
|
std::move(MaybeNewBlockInfo.get());
|
||||||
|
if (!NewBlockInfo)
|
||||||
|
return reportError("Malformed BlockInfoBlock in block info file");
|
||||||
|
BlockInfo = std::move(*NewBlockInfo);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (Error Err = BlockInfoCursor.SkipBlock())
|
||||||
|
return Err;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Parse the top-level structure. We only allow blocks at the top-level.
|
||||||
|
while (!Stream.AtEndOfStream()) {
|
||||||
|
Expected<unsigned> MaybeCode = Stream.ReadCode();
|
||||||
|
if (!MaybeCode)
|
||||||
|
return MaybeCode.takeError();
|
||||||
|
if (MaybeCode.get() != bitc::ENTER_SUBBLOCK)
|
||||||
|
return reportError("Invalid record at top-level");
|
||||||
|
|
||||||
|
Expected<unsigned> MaybeBlockID = Stream.ReadSubBlockID();
|
||||||
|
if (!MaybeBlockID)
|
||||||
|
return MaybeBlockID.takeError();
|
||||||
|
|
||||||
|
if (Error E = parseBlock(MaybeBlockID.get(), 0, O, CheckHash))
|
||||||
|
return E;
|
||||||
|
++NumTopBlocks;
|
||||||
|
}
|
||||||
|
|
||||||
|
return Error::success();
|
||||||
|
}
|
||||||
|
|
||||||
|
void BitcodeAnalyzer::printStats(BCDumpOptions O,
|
||||||
|
Optional<StringRef> Filename) {
|
||||||
|
uint64_t BufferSizeBits = Stream.getBitcodeBytes().size() * CHAR_BIT;
|
||||||
|
// Print a summary of the read file.
|
||||||
|
O.OS << "Summary ";
|
||||||
|
if (Filename)
|
||||||
|
O.OS << "of " << Filename->data() << ":\n";
|
||||||
|
O.OS << " Total size: ";
|
||||||
|
printSize(O.OS, BufferSizeBits);
|
||||||
|
O.OS << "\n";
|
||||||
|
O.OS << " Stream type: ";
|
||||||
|
switch (CurStreamType) {
|
||||||
|
case UnknownBitstream:
|
||||||
|
O.OS << "unknown\n";
|
||||||
|
break;
|
||||||
|
case LLVMIRBitstream:
|
||||||
|
O.OS << "LLVM IR\n";
|
||||||
|
break;
|
||||||
|
case ClangSerializedASTBitstream:
|
||||||
|
O.OS << "Clang Serialized AST\n";
|
||||||
|
break;
|
||||||
|
case ClangSerializedDiagnosticsBitstream:
|
||||||
|
O.OS << "Clang Serialized Diagnostics\n";
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
O.OS << " # Toplevel Blocks: " << NumTopBlocks << "\n";
|
||||||
|
O.OS << "\n";
|
||||||
|
|
||||||
|
// Emit per-block stats.
|
||||||
|
O.OS << "Per-block Summary:\n";
|
||||||
|
for (std::map<unsigned, PerBlockIDStats>::iterator I = BlockIDStats.begin(),
|
||||||
|
E = BlockIDStats.end();
|
||||||
|
I != E; ++I) {
|
||||||
|
O.OS << " Block ID #" << I->first;
|
||||||
|
if (Optional<const char *> BlockName =
|
||||||
|
GetBlockName(I->first, BlockInfo, CurStreamType))
|
||||||
|
O.OS << " (" << *BlockName << ")";
|
||||||
|
O.OS << ":\n";
|
||||||
|
|
||||||
|
const PerBlockIDStats &Stats = I->second;
|
||||||
|
O.OS << " Num Instances: " << Stats.NumInstances << "\n";
|
||||||
|
O.OS << " Total Size: ";
|
||||||
|
printSize(O.OS, Stats.NumBits);
|
||||||
|
O.OS << "\n";
|
||||||
|
double pct = (Stats.NumBits * 100.0) / BufferSizeBits;
|
||||||
|
O.OS << " Percent of file: " << format("%2.4f%%", pct) << "\n";
|
||||||
|
if (Stats.NumInstances > 1) {
|
||||||
|
O.OS << " Average Size: ";
|
||||||
|
printSize(O.OS, Stats.NumBits / (double)Stats.NumInstances);
|
||||||
|
O.OS << "\n";
|
||||||
|
O.OS << " Tot/Avg SubBlocks: " << Stats.NumSubBlocks << "/"
|
||||||
|
<< Stats.NumSubBlocks / (double)Stats.NumInstances << "\n";
|
||||||
|
O.OS << " Tot/Avg Abbrevs: " << Stats.NumAbbrevs << "/"
|
||||||
|
<< Stats.NumAbbrevs / (double)Stats.NumInstances << "\n";
|
||||||
|
O.OS << " Tot/Avg Records: " << Stats.NumRecords << "/"
|
||||||
|
<< Stats.NumRecords / (double)Stats.NumInstances << "\n";
|
||||||
|
} else {
|
||||||
|
O.OS << " Num SubBlocks: " << Stats.NumSubBlocks << "\n";
|
||||||
|
O.OS << " Num Abbrevs: " << Stats.NumAbbrevs << "\n";
|
||||||
|
O.OS << " Num Records: " << Stats.NumRecords << "\n";
|
||||||
|
}
|
||||||
|
if (Stats.NumRecords) {
|
||||||
|
double pct = (Stats.NumAbbreviatedRecords * 100.0) / Stats.NumRecords;
|
||||||
|
O.OS << " Percent Abbrevs: " << format("%2.4f%%", pct) << "\n";
|
||||||
|
}
|
||||||
|
O.OS << "\n";
|
||||||
|
|
||||||
|
// Print a histogram of the codes we see.
|
||||||
|
if (O.Histogram && !Stats.CodeFreq.empty()) {
|
||||||
|
std::vector<std::pair<unsigned, unsigned>> FreqPairs; // <freq,code>
|
||||||
|
for (unsigned i = 0, e = Stats.CodeFreq.size(); i != e; ++i)
|
||||||
|
if (unsigned Freq = Stats.CodeFreq[i].NumInstances)
|
||||||
|
FreqPairs.push_back(std::make_pair(Freq, i));
|
||||||
|
llvm::stable_sort(FreqPairs);
|
||||||
|
std::reverse(FreqPairs.begin(), FreqPairs.end());
|
||||||
|
|
||||||
|
O.OS << "\tRecord Histogram:\n";
|
||||||
|
O.OS << "\t\t Count # Bits b/Rec % Abv Record Kind\n";
|
||||||
|
for (unsigned i = 0, e = FreqPairs.size(); i != e; ++i) {
|
||||||
|
const PerRecordStats &RecStats = Stats.CodeFreq[FreqPairs[i].second];
|
||||||
|
|
||||||
|
O.OS << format("\t\t%7d %9lu", RecStats.NumInstances,
|
||||||
|
(unsigned long)RecStats.TotalBits);
|
||||||
|
|
||||||
|
if (RecStats.NumInstances > 1)
|
||||||
|
O.OS << format(" %9.1f",
|
||||||
|
(double)RecStats.TotalBits / RecStats.NumInstances);
|
||||||
|
else
|
||||||
|
O.OS << " ";
|
||||||
|
|
||||||
|
if (RecStats.NumAbbrev)
|
||||||
|
O.OS << format(" %7.2f", (double)RecStats.NumAbbrev /
|
||||||
|
RecStats.NumInstances * 100);
|
||||||
|
else
|
||||||
|
O.OS << " ";
|
||||||
|
|
||||||
|
O.OS << " ";
|
||||||
|
if (Optional<const char *> CodeName = GetCodeName(
|
||||||
|
FreqPairs[i].second, I->first, BlockInfo, CurStreamType))
|
||||||
|
O.OS << *CodeName << "\n";
|
||||||
|
else
|
||||||
|
O.OS << "UnknownCode" << FreqPairs[i].second << "\n";
|
||||||
|
}
|
||||||
|
O.OS << "\n";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Error BitcodeAnalyzer::parseBlock(unsigned BlockID, unsigned IndentLevel,
|
||||||
|
Optional<BCDumpOptions> O,
|
||||||
|
Optional<StringRef> CheckHash) {
|
||||||
|
std::string Indent(IndentLevel * 2, ' ');
|
||||||
|
uint64_t BlockBitStart = Stream.GetCurrentBitNo();
|
||||||
|
|
||||||
|
// Get the statistics for this BlockID.
|
||||||
|
PerBlockIDStats &BlockStats = BlockIDStats[BlockID];
|
||||||
|
|
||||||
|
BlockStats.NumInstances++;
|
||||||
|
|
||||||
|
// BLOCKINFO is a special part of the stream.
|
||||||
|
bool DumpRecords = O.hasValue();
|
||||||
|
if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
|
||||||
|
if (O)
|
||||||
|
O->OS << Indent << "<BLOCKINFO_BLOCK/>\n";
|
||||||
|
Expected<Optional<BitstreamBlockInfo>> MaybeNewBlockInfo =
|
||||||
|
Stream.ReadBlockInfoBlock(/*ReadBlockInfoNames=*/true);
|
||||||
|
if (!MaybeNewBlockInfo)
|
||||||
|
return MaybeNewBlockInfo.takeError();
|
||||||
|
Optional<BitstreamBlockInfo> NewBlockInfo =
|
||||||
|
std::move(MaybeNewBlockInfo.get());
|
||||||
|
if (!NewBlockInfo)
|
||||||
|
return reportError("Malformed BlockInfoBlock");
|
||||||
|
BlockInfo = std::move(*NewBlockInfo);
|
||||||
|
if (Error Err = Stream.JumpToBit(BlockBitStart))
|
||||||
|
return Err;
|
||||||
|
// It's not really interesting to dump the contents of the blockinfo
|
||||||
|
// block.
|
||||||
|
DumpRecords = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
unsigned NumWords = 0;
|
||||||
|
if (Error Err = Stream.EnterSubBlock(BlockID, &NumWords))
|
||||||
|
return Err;
|
||||||
|
|
||||||
|
// Keep it for later, when we see a MODULE_HASH record
|
||||||
|
uint64_t BlockEntryPos = Stream.getCurrentByteNo();
|
||||||
|
|
||||||
|
Optional<const char *> BlockName = None;
|
||||||
|
if (DumpRecords) {
|
||||||
|
O->OS << Indent << "<";
|
||||||
|
if ((BlockName = GetBlockName(BlockID, BlockInfo, CurStreamType)))
|
||||||
|
O->OS << *BlockName;
|
||||||
|
else
|
||||||
|
O->OS << "UnknownBlock" << BlockID;
|
||||||
|
|
||||||
|
if (!O->Symbolic && BlockName)
|
||||||
|
O->OS << " BlockID=" << BlockID;
|
||||||
|
|
||||||
|
O->OS << " NumWords=" << NumWords
|
||||||
|
<< " BlockCodeSize=" << Stream.getAbbrevIDWidth() << ">\n";
|
||||||
|
}
|
||||||
|
|
||||||
|
SmallVector<uint64_t, 64> Record;
|
||||||
|
|
||||||
|
// Keep the offset to the metadata index if seen.
|
||||||
|
uint64_t MetadataIndexOffset = 0;
|
||||||
|
|
||||||
|
// Read all the records for this block.
|
||||||
|
while (1) {
|
||||||
|
if (Stream.AtEndOfStream())
|
||||||
|
return reportError("Premature end of bitstream");
|
||||||
|
|
||||||
|
uint64_t RecordStartBit = Stream.GetCurrentBitNo();
|
||||||
|
|
||||||
|
Expected<BitstreamEntry> MaybeEntry =
|
||||||
|
Stream.advance(BitstreamCursor::AF_DontAutoprocessAbbrevs);
|
||||||
|
if (!MaybeEntry)
|
||||||
|
return MaybeEntry.takeError();
|
||||||
|
BitstreamEntry Entry = MaybeEntry.get();
|
||||||
|
|
||||||
|
switch (Entry.Kind) {
|
||||||
|
case BitstreamEntry::Error:
|
||||||
|
return reportError("malformed bitcode file");
|
||||||
|
case BitstreamEntry::EndBlock: {
|
||||||
|
uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
|
||||||
|
BlockStats.NumBits += BlockBitEnd - BlockBitStart;
|
||||||
|
if (DumpRecords) {
|
||||||
|
O->OS << Indent << "</";
|
||||||
|
if (BlockName)
|
||||||
|
O->OS << *BlockName << ">\n";
|
||||||
|
else
|
||||||
|
O->OS << "UnknownBlock" << BlockID << ">\n";
|
||||||
|
}
|
||||||
|
return Error::success();
|
||||||
|
}
|
||||||
|
|
||||||
|
case BitstreamEntry::SubBlock: {
|
||||||
|
uint64_t SubBlockBitStart = Stream.GetCurrentBitNo();
|
||||||
|
if (Error E = parseBlock(Entry.ID, IndentLevel + 1, O, CheckHash))
|
||||||
|
return E;
|
||||||
|
++BlockStats.NumSubBlocks;
|
||||||
|
uint64_t SubBlockBitEnd = Stream.GetCurrentBitNo();
|
||||||
|
|
||||||
|
// Don't include subblock sizes in the size of this block.
|
||||||
|
BlockBitStart += SubBlockBitEnd - SubBlockBitStart;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
case BitstreamEntry::Record:
|
||||||
|
// The interesting case.
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (Entry.ID == bitc::DEFINE_ABBREV) {
|
||||||
|
if (Error Err = Stream.ReadAbbrevRecord())
|
||||||
|
return Err;
|
||||||
|
++BlockStats.NumAbbrevs;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
Record.clear();
|
||||||
|
|
||||||
|
++BlockStats.NumRecords;
|
||||||
|
|
||||||
|
StringRef Blob;
|
||||||
|
uint64_t CurrentRecordPos = Stream.GetCurrentBitNo();
|
||||||
|
Expected<unsigned> MaybeCode = Stream.readRecord(Entry.ID, Record, &Blob);
|
||||||
|
if (!MaybeCode)
|
||||||
|
return MaybeCode.takeError();
|
||||||
|
unsigned Code = MaybeCode.get();
|
||||||
|
|
||||||
|
// Increment the # occurrences of this code.
|
||||||
|
if (BlockStats.CodeFreq.size() <= Code)
|
||||||
|
BlockStats.CodeFreq.resize(Code + 1);
|
||||||
|
BlockStats.CodeFreq[Code].NumInstances++;
|
||||||
|
BlockStats.CodeFreq[Code].TotalBits +=
|
||||||
|
Stream.GetCurrentBitNo() - RecordStartBit;
|
||||||
|
if (Entry.ID != bitc::UNABBREV_RECORD) {
|
||||||
|
BlockStats.CodeFreq[Code].NumAbbrev++;
|
||||||
|
++BlockStats.NumAbbreviatedRecords;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (DumpRecords) {
|
||||||
|
O->OS << Indent << " <";
|
||||||
|
Optional<const char *> CodeName =
|
||||||
|
GetCodeName(Code, BlockID, BlockInfo, CurStreamType);
|
||||||
|
if (CodeName)
|
||||||
|
O->OS << *CodeName;
|
||||||
|
else
|
||||||
|
O->OS << "UnknownCode" << Code;
|
||||||
|
if (!O->Symbolic && CodeName)
|
||||||
|
O->OS << " codeid=" << Code;
|
||||||
|
const BitCodeAbbrev *Abbv = nullptr;
|
||||||
|
if (Entry.ID != bitc::UNABBREV_RECORD) {
|
||||||
|
Abbv = Stream.getAbbrev(Entry.ID);
|
||||||
|
O->OS << " abbrevid=" << Entry.ID;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (unsigned i = 0, e = Record.size(); i != e; ++i)
|
||||||
|
O->OS << " op" << i << "=" << (int64_t)Record[i];
|
||||||
|
|
||||||
|
// If we found a metadata index, let's verify that we had an offset
|
||||||
|
// before and validate its forward reference offset was correct!
|
||||||
|
if (BlockID == bitc::METADATA_BLOCK_ID) {
|
||||||
|
if (Code == bitc::METADATA_INDEX_OFFSET) {
|
||||||
|
if (Record.size() != 2)
|
||||||
|
O->OS << "(Invalid record)";
|
||||||
|
else {
|
||||||
|
auto Offset = Record[0] + (Record[1] << 32);
|
||||||
|
MetadataIndexOffset = Stream.GetCurrentBitNo() + Offset;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (Code == bitc::METADATA_INDEX) {
|
||||||
|
O->OS << " (offset ";
|
||||||
|
if (MetadataIndexOffset == RecordStartBit)
|
||||||
|
O->OS << "match)";
|
||||||
|
else
|
||||||
|
O->OS << "mismatch: " << MetadataIndexOffset << " vs "
|
||||||
|
<< RecordStartBit << ")";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// If we found a module hash, let's verify that it matches!
|
||||||
|
if (BlockID == bitc::MODULE_BLOCK_ID && Code == bitc::MODULE_CODE_HASH &&
|
||||||
|
CheckHash.hasValue()) {
|
||||||
|
if (Record.size() != 5)
|
||||||
|
O->OS << " (invalid)";
|
||||||
|
else {
|
||||||
|
// Recompute the hash and compare it to the one in the bitcode
|
||||||
|
SHA1 Hasher;
|
||||||
|
StringRef Hash;
|
||||||
|
Hasher.update(*CheckHash);
|
||||||
|
{
|
||||||
|
int BlockSize = (CurrentRecordPos / 8) - BlockEntryPos;
|
||||||
|
auto Ptr = Stream.getPointerToByte(BlockEntryPos, BlockSize);
|
||||||
|
Hasher.update(ArrayRef<uint8_t>(Ptr, BlockSize));
|
||||||
|
Hash = Hasher.result();
|
||||||
|
}
|
||||||
|
SmallString<20> RecordedHash;
|
||||||
|
RecordedHash.resize(20);
|
||||||
|
int Pos = 0;
|
||||||
|
for (auto &Val : Record) {
|
||||||
|
assert(!(Val >> 32) && "Unexpected high bits set");
|
||||||
|
RecordedHash[Pos++] = (Val >> 24) & 0xFF;
|
||||||
|
RecordedHash[Pos++] = (Val >> 16) & 0xFF;
|
||||||
|
RecordedHash[Pos++] = (Val >> 8) & 0xFF;
|
||||||
|
RecordedHash[Pos++] = (Val >> 0) & 0xFF;
|
||||||
|
}
|
||||||
|
if (Hash == RecordedHash)
|
||||||
|
O->OS << " (match)";
|
||||||
|
else
|
||||||
|
O->OS << " (!mismatch!)";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
O->OS << "/>";
|
||||||
|
|
||||||
|
if (Abbv) {
|
||||||
|
for (unsigned i = 1, e = Abbv->getNumOperandInfos(); i != e; ++i) {
|
||||||
|
const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
|
||||||
|
if (!Op.isEncoding() || Op.getEncoding() != BitCodeAbbrevOp::Array)
|
||||||
|
continue;
|
||||||
|
assert(i + 2 == e && "Array op not second to last");
|
||||||
|
std::string Str;
|
||||||
|
bool ArrayIsPrintable = true;
|
||||||
|
for (unsigned j = i - 1, je = Record.size(); j != je; ++j) {
|
||||||
|
if (!isPrint(static_cast<unsigned char>(Record[j]))) {
|
||||||
|
ArrayIsPrintable = false;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
Str += (char)Record[j];
|
||||||
|
}
|
||||||
|
if (ArrayIsPrintable)
|
||||||
|
O->OS << " record string = '" << Str << "'";
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (Blob.data()) {
|
||||||
|
if (canDecodeBlob(Code, BlockID)) {
|
||||||
|
if (Error E = decodeMetadataStringsBlob(Indent, Record, Blob, O->OS))
|
||||||
|
return E;
|
||||||
|
} else {
|
||||||
|
O->OS << " blob data = ";
|
||||||
|
if (O->ShowBinaryBlobs) {
|
||||||
|
O->OS << "'";
|
||||||
|
O->OS.write_escaped(Blob, /*hex=*/true) << "'";
|
||||||
|
} else {
|
||||||
|
bool BlobIsPrintable = true;
|
||||||
|
for (unsigned i = 0, e = Blob.size(); i != e; ++i)
|
||||||
|
if (!isPrint(static_cast<unsigned char>(Blob[i]))) {
|
||||||
|
BlobIsPrintable = false;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (BlobIsPrintable)
|
||||||
|
O->OS << "'" << Blob << "'";
|
||||||
|
else
|
||||||
|
O->OS << "unprintable, " << Blob.size() << " bytes.";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
O->OS << "\n";
|
||||||
|
}
|
||||||
|
|
||||||
|
// Make sure that we can skip the current record.
|
||||||
|
if (Error Err = Stream.JumpToBit(CurrentRecordPos))
|
||||||
|
return Err;
|
||||||
|
if (Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID))
|
||||||
|
; // Do nothing.
|
||||||
|
else
|
||||||
|
return Skipped.takeError();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
@ -1,4 +1,5 @@
|
|||||||
add_llvm_library(LLVMBitReader
|
add_llvm_library(LLVMBitReader
|
||||||
|
BitcodeAnalyzer.cpp
|
||||||
BitReader.cpp
|
BitReader.cpp
|
||||||
BitcodeReader.cpp
|
BitcodeReader.cpp
|
||||||
MetadataLoader.cpp
|
MetadataLoader.cpp
|
||||||
|
|||||||
File diff suppressed because it is too large
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Reference in New Issue
Block a user